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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:46:47,798 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:46:47,800 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:46:47,814 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:46:47,815 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:46:47,816 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:46:47,817 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:46:47,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:46:47,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:46:47,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:46:47,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:46:47,858 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 10:46:47,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:46:47,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:46:47,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:46:47,887 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:46:47,887 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:46:47,888 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:46:47,888 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:46:47,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:46:47,891 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:46:47,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:46:47,891 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:46:47,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:46:47,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:46:47,892 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:46:47,892 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:46:47,892 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:46:47,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:46:47,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:46:47,893 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:46:47,893 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:46:47,893 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:46:47,893 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:46:47,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:46:47,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:46:47,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:46:47,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:46:47,896 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:46:47,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:46:47,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:46:47,896 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:46:47,896 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:46:47,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:46:47,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:46:47,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:46:47,965 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:46:47,966 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:46:47,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-30 10:46:47,967 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-09-30 10:46:48,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:46:48,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:46:48,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:46:48,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:46:48,023 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:46:48,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:46:48,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:46:48,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:46:48,063 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:46:48,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... [2018-09-30 10:46:48,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:46:48,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:46:48,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:46:48,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:46:48,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:46:48,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 10:46:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 10:46:48,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 10:46:48,451 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 10:46:48,451 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:46:48 BoogieIcfgContainer [2018-09-30 10:46:48,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:46:48,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:46:48,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:46:48,456 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:46:48,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:46:48" (1/2) ... [2018-09-30 10:46:48,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba21f0 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:46:48, skipping insertion in model container [2018-09-30 10:46:48,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:46:48" (2/2) ... [2018-09-30 10:46:48,460 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-30 10:46:48,470 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:46:48,478 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:46:48,530 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:46:48,530 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:46:48,531 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:46:48,531 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:46:48,531 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:46:48,531 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:46:48,532 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:46:48,532 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:46:48,532 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:46:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 10:46:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 10:46:48,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:48,556 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:48,557 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:48,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-09-30 10:46:48,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:48,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:48,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:48,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:48,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:48,757 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:46:48,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:46:48,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:46:48,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:46:48,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:48,781 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 10:46:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:48,948 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-09-30 10:46:48,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:46:48,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-30 10:46:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:48,975 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:46:48,975 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:46:48,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:46:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:46:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:46:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-09-30 10:46:49,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-09-30 10:46:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:49,027 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-09-30 10:46:49,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:46:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-09-30 10:46:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-30 10:46:49,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:49,028 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:49,028 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:49,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-09-30 10:46:49,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:49,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:49,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:49,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:49,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:49,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:49,091 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:49,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:49,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:49,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:49,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:46:49,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:46:49,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:46:49,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:49,347 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-09-30 10:46:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:49,496 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-09-30 10:46:49,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:46:49,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-09-30 10:46:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:49,498 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:46:49,498 INFO L226 Difference]: Without dead ends: 12 [2018-09-30 10:46:49,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-30 10:46:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-30 10:46:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-30 10:46:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-09-30 10:46:49,503 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-09-30 10:46:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:49,504 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-09-30 10:46:49,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:46:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-09-30 10:46:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:46:49,505 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:49,505 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:49,506 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:49,506 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:49,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-09-30 10:46:49,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:49,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:49,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:49,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:49,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:49,636 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:46:49,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 10:46:49,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:46:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:46:49,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:49,637 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-09-30 10:46:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:50,143 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-09-30 10:46:50,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:46:50,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-30 10:46:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:50,145 INFO L225 Difference]: With dead ends: 32 [2018-09-30 10:46:50,145 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:46:50,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:46:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-09-30 10:46:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:46:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-09-30 10:46:50,153 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-09-30 10:46:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:50,153 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-09-30 10:46:50,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:46:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-09-30 10:46:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:46:50,154 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:50,154 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:50,155 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:50,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-09-30 10:46:50,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:50,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:50,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:50,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 10:46:50,240 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:46:50,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 10:46:50,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:46:50,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:46:50,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:50,242 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-09-30 10:46:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:50,432 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-09-30 10:46:50,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:46:50,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-30 10:46:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:50,435 INFO L225 Difference]: With dead ends: 26 [2018-09-30 10:46:50,436 INFO L226 Difference]: Without dead ends: 24 [2018-09-30 10:46:50,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-30 10:46:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-09-30 10:46:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 10:46:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-30 10:46:50,443 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-09-30 10:46:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:50,443 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-30 10:46:50,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:46:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-30 10:46:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 10:46:50,445 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:50,445 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-09-30 10:46:50,445 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:50,445 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-09-30 10:46:50,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:50,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:50,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:50,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:50,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:50,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:50,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:50,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:50,653 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:50,653 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:46:50,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:46:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:46:50,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:50,654 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-09-30 10:46:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:50,737 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-30 10:46:50,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:46:50,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-30 10:46:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:50,741 INFO L225 Difference]: With dead ends: 37 [2018-09-30 10:46:50,741 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:46:50,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:46:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:46:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:46:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-30 10:46:50,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-09-30 10:46:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:50,752 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-30 10:46:50,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:46:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-30 10:46:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:46:50,753 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:50,754 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:50,754 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:50,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-09-30 10:46:50,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:50,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:50,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:50,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:50,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:50,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:50,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:51,043 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:51,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:51,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:51,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:51,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 10:46:51,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:46:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:46:51,185 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:51,185 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-09-30 10:46:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:51,686 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-30 10:46:51,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:46:51,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-09-30 10:46:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:51,687 INFO L225 Difference]: With dead ends: 39 [2018-09-30 10:46:51,687 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 10:46:51,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 10:46:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 10:46:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 10:46:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-30 10:46:51,693 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-09-30 10:46:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:51,694 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-30 10:46:51,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:46:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-30 10:46:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 10:46:51,695 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:51,695 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:51,695 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:51,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-09-30 10:46:51,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:51,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:51,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:51,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:51,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:51,902 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:51,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-30 10:46:51,936 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:51,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:52,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:52,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:46:52,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:46:52,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:46:52,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:52,014 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-09-30 10:46:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:52,150 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-30 10:46:52,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:46:52,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-09-30 10:46:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:52,157 INFO L225 Difference]: With dead ends: 41 [2018-09-30 10:46:52,157 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:46:52,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:46:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 10:46:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 10:46:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-30 10:46:52,163 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-09-30 10:46:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:52,164 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-30 10:46:52,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:46:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-30 10:46:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:46:52,165 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:52,165 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:52,165 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:52,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-09-30 10:46:52,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:52,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:52,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:52,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:52,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:52,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:52,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:52,333 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:52,367 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:52,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:52,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:52,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:52,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:46:52,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:46:52,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:46:52,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:52,460 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-09-30 10:46:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:52,586 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-30 10:46:52,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:46:52,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 10:46:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:52,589 INFO L225 Difference]: With dead ends: 43 [2018-09-30 10:46:52,589 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 10:46:52,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 10:46:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 10:46:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 10:46:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-09-30 10:46:52,595 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-09-30 10:46:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:52,595 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-09-30 10:46:52,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:46:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-09-30 10:46:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 10:46:52,596 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:52,597 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:52,597 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:52,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-09-30 10:46:52,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:52,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:52,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:52,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:52,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:52,709 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:52,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:52,720 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:52,764 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 10:46:52,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:52,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:52,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:52,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 10:46:52,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:46:52,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:46:52,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:52,877 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-09-30 10:46:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:53,052 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-30 10:46:53,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:46:53,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-30 10:46:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:53,054 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:46:53,054 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 10:46:53,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 10:46:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 10:46:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 10:46:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-30 10:46:53,060 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-09-30 10:46:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:53,061 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-30 10:46:53,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:46:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-30 10:46:53,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 10:46:53,062 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:53,062 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:53,062 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:53,063 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-09-30 10:46:53,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:53,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:53,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:53,064 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:53,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:53,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:53,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:53,199 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:53,313 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-30 10:46:53,313 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:53,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:53,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:53,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:46:53,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:46:53,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:46:53,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:53,536 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-09-30 10:46:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:53,617 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-09-30 10:46:53,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:46:53,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-09-30 10:46:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:53,619 INFO L225 Difference]: With dead ends: 47 [2018-09-30 10:46:53,619 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 10:46:53,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 10:46:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-30 10:46:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-30 10:46:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-09-30 10:46:53,626 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-09-30 10:46:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:53,626 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-09-30 10:46:53,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:46:53,626 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-09-30 10:46:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 10:46:53,627 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:53,627 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:53,628 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:53,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-09-30 10:46:53,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:53,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:53,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:53,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:53,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:53,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:53,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:53,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:53,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:53,976 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:53,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:46:53,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:46:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:46:53,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:53,977 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-09-30 10:46:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:54,085 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-09-30 10:46:54,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:46:54,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-09-30 10:46:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:54,089 INFO L225 Difference]: With dead ends: 49 [2018-09-30 10:46:54,089 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 10:46:54,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 10:46:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 10:46:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 10:46:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-09-30 10:46:54,096 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-09-30 10:46:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:54,096 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-09-30 10:46:54,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:46:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-09-30 10:46:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 10:46:54,097 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:54,098 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:54,098 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:54,098 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-09-30 10:46:54,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:54,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:54,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:54,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:54,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:54,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:54,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:54,272 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:54,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:54,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:54,399 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:54,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 10:46:54,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:46:54,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:46:54,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:54,401 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-09-30 10:46:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:54,510 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-09-30 10:46:54,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:46:54,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-09-30 10:46:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:54,512 INFO L225 Difference]: With dead ends: 51 [2018-09-30 10:46:54,512 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 10:46:54,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 10:46:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 10:46:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 10:46:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-09-30 10:46:54,518 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-09-30 10:46:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:54,519 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-09-30 10:46:54,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:46:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-09-30 10:46:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-30 10:46:54,520 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:54,520 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:54,520 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:54,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-09-30 10:46:54,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:54,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:54,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:54,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:54,640 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:54,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:54,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:54,723 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-30 10:46:54,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:54,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:54,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:54,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 10:46:54,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:46:54,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:46:54,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:54,878 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-09-30 10:46:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:55,163 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-09-30 10:46:55,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:46:55,172 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-09-30 10:46:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:55,173 INFO L225 Difference]: With dead ends: 53 [2018-09-30 10:46:55,173 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 10:46:55,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 10:46:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 10:46:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:46:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-09-30 10:46:55,180 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-09-30 10:46:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:55,183 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-09-30 10:46:55,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:46:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-09-30 10:46:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:46:55,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:55,184 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:55,187 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:55,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:55,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-09-30 10:46:55,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:55,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:55,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:55,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:55,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:55,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:55,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:55,367 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:55,404 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:55,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:55,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:55,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:55,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:46:55,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:46:55,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:46:55,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:55,615 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-09-30 10:46:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:55,797 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-09-30 10:46:55,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:46:55,798 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-09-30 10:46:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:55,799 INFO L225 Difference]: With dead ends: 55 [2018-09-30 10:46:55,799 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 10:46:55,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 10:46:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 10:46:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 10:46:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-09-30 10:46:55,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-09-30 10:46:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:55,806 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-09-30 10:46:55,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:46:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-09-30 10:46:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 10:46:55,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:55,807 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:55,807 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:55,808 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-09-30 10:46:55,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:55,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:55,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:55,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:55,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:56,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:56,101 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:56,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:56,267 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-30 10:46:56,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:56,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:56,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:56,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 10:46:56,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:46:56,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:46:56,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:56,398 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-09-30 10:46:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:56,521 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-09-30 10:46:56,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:46:56,525 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-09-30 10:46:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:56,525 INFO L225 Difference]: With dead ends: 57 [2018-09-30 10:46:56,526 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:46:56,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:46:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 10:46:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 10:46:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-09-30 10:46:56,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-09-30 10:46:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:56,540 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-09-30 10:46:56,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:46:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-09-30 10:46:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 10:46:56,541 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:56,541 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:56,542 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:56,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-09-30 10:46:56,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:56,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:56,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:56,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:56,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:56,770 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:56,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:56,778 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:46:56,979 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-09-30 10:46:56,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:56,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:57,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:57,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:46:57,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:46:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:46:57,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:57,230 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-09-30 10:46:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:57,412 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-09-30 10:46:57,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:46:57,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-09-30 10:46:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:57,415 INFO L225 Difference]: With dead ends: 59 [2018-09-30 10:46:57,415 INFO L226 Difference]: Without dead ends: 45 [2018-09-30 10:46:57,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-30 10:46:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-30 10:46:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-30 10:46:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-09-30 10:46:57,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-09-30 10:46:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:57,426 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-09-30 10:46:57,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:46:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-09-30 10:46:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 10:46:57,427 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:57,427 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:57,427 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:57,428 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-09-30 10:46:57,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:57,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:57,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:57,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:57,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:58,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:58,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:58,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:58,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:58,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:58,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:46:58,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:46:58,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:46:58,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:58,509 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-09-30 10:46:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:58,672 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-09-30 10:46:58,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:46:58,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-09-30 10:46:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:58,675 INFO L225 Difference]: With dead ends: 61 [2018-09-30 10:46:58,675 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 10:46:58,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 10:46:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 10:46:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 10:46:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-09-30 10:46:58,681 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-09-30 10:46:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:58,682 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-09-30 10:46:58,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:46:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-09-30 10:46:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 10:46:58,683 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:58,683 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:58,683 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:58,684 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-09-30 10:46:58,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:58,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:58,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:58,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:46:58,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:58,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:58,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:58,859 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:58,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:58,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:58,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:59,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:59,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 10:46:59,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:46:59,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:46:59,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:59,012 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-09-30 10:46:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:59,203 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-09-30 10:46:59,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:46:59,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-09-30 10:46:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:59,204 INFO L225 Difference]: With dead ends: 63 [2018-09-30 10:46:59,204 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 10:46:59,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 10:46:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 10:46:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 10:46:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-09-30 10:46:59,210 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-09-30 10:46:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:59,211 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-09-30 10:46:59,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:46:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-09-30 10:46:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 10:46:59,212 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:59,212 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:46:59,212 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:59,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:59,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-09-30 10:46:59,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:59,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:59,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:59,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:59,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:59,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:59,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:59,392 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:46:59,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-09-30 10:46:59,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:59,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:46:59,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:59,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:46:59,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:46:59,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:46:59,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:59,782 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-09-30 10:47:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:00,049 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-09-30 10:47:00,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:47:00,049 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-09-30 10:47:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:00,050 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:47:00,050 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 10:47:00,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 10:47:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 10:47:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 10:47:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-30 10:47:00,055 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-09-30 10:47:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:00,055 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-30 10:47:00,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:47:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-30 10:47:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 10:47:00,056 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:00,056 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:00,057 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:00,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-09-30 10:47:00,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:00,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:00,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:00,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:00,263 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:00,294 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:00,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:00,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:00,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:00,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:47:00,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:47:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:47:00,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:00,383 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-09-30 10:47:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:00,517 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-09-30 10:47:00,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:47:00,518 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-09-30 10:47:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:00,518 INFO L225 Difference]: With dead ends: 67 [2018-09-30 10:47:00,519 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 10:47:00,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 10:47:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 10:47:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 10:47:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-09-30 10:47:00,526 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-09-30 10:47:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:00,526 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-09-30 10:47:00,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:47:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-09-30 10:47:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 10:47:00,527 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:00,527 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:00,527 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:00,528 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-09-30 10:47:00,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:00,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:00,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:00,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:00,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:00,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:00,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:00,753 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-30 10:47:00,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:00,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:01,017 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:01,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 10:47:01,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 10:47:01,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 10:47:01,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:01,018 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-09-30 10:47:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:01,212 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-09-30 10:47:01,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:47:01,213 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-09-30 10:47:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:01,214 INFO L225 Difference]: With dead ends: 69 [2018-09-30 10:47:01,214 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 10:47:01,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 10:47:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 10:47:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 10:47:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-09-30 10:47:01,220 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-09-30 10:47:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:01,220 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-09-30 10:47:01,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 10:47:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-09-30 10:47:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 10:47:01,221 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:01,222 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:01,222 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:01,222 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-09-30 10:47:01,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:01,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:01,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:01,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:01,427 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:01,427 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:01,435 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:01,530 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-09-30 10:47:01,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:01,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:01,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:01,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:47:01,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:47:01,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:47:01,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:01,667 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-09-30 10:47:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:01,945 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-09-30 10:47:01,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:47:01,956 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-09-30 10:47:01,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:01,956 INFO L225 Difference]: With dead ends: 71 [2018-09-30 10:47:01,956 INFO L226 Difference]: Without dead ends: 57 [2018-09-30 10:47:01,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-30 10:47:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-30 10:47:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 10:47:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-09-30 10:47:01,961 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-09-30 10:47:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:01,961 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-09-30 10:47:01,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:47:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-09-30 10:47:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 10:47:01,962 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:01,962 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:01,963 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:01,963 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:01,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-09-30 10:47:01,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:01,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:01,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:01,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:02,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:02,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:02,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:02,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:02,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:02,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:47:02,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:47:02,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:47:02,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:02,414 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-09-30 10:47:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:02,779 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-09-30 10:47:02,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:47:02,779 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-09-30 10:47:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:02,780 INFO L225 Difference]: With dead ends: 73 [2018-09-30 10:47:02,780 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 10:47:02,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 10:47:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 10:47:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:47:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-09-30 10:47:02,785 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-09-30 10:47:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:02,786 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-09-30 10:47:02,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:47:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-09-30 10:47:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:47:02,786 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:02,787 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:02,787 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:02,787 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-09-30 10:47:02,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:02,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:02,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:02,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:02,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:03,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:03,105 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:03,112 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:03,153 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:03,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:03,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:03,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:03,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 10:47:03,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:47:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:47:03,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:03,363 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-09-30 10:47:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:03,611 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-09-30 10:47:03,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:47:03,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-09-30 10:47:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:03,612 INFO L225 Difference]: With dead ends: 75 [2018-09-30 10:47:03,612 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 10:47:03,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 10:47:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 10:47:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 10:47:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-09-30 10:47:03,616 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-09-30 10:47:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:03,616 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-09-30 10:47:03,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:47:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-09-30 10:47:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-30 10:47:03,616 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:03,617 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:03,617 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:03,617 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:03,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-09-30 10:47:03,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:03,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:03,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:03,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:03,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:04,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:04,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:04,360 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:04,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-09-30 10:47:04,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:04,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:04,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:04,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 10:47:04,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 10:47:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 10:47:04,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:04,557 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-09-30 10:47:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:04,672 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-09-30 10:47:04,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:47:04,673 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-09-30 10:47:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:04,674 INFO L225 Difference]: With dead ends: 77 [2018-09-30 10:47:04,674 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:47:04,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:47:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 10:47:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 10:47:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-09-30 10:47:04,678 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-09-30 10:47:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:04,678 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-09-30 10:47:04,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 10:47:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-09-30 10:47:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:47:04,679 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:04,679 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:04,679 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:04,679 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:04,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-09-30 10:47:04,679 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:04,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:04,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:04,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:04,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:04,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:04,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:04,920 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:04,963 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:04,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:04,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:05,081 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:05,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:47:05,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 10:47:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 10:47:05,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:05,082 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-09-30 10:47:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:05,559 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-09-30 10:47:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:47:05,559 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-09-30 10:47:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:05,560 INFO L225 Difference]: With dead ends: 79 [2018-09-30 10:47:05,560 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 10:47:05,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 10:47:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 10:47:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 10:47:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-09-30 10:47:05,565 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-09-30 10:47:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:05,566 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-09-30 10:47:05,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 10:47:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-09-30 10:47:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-30 10:47:05,566 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:05,567 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:05,567 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:05,567 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:05,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-09-30 10:47:05,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:05,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:05,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:05,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:05,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:05,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:05,992 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:06,000 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:06,063 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-30 10:47:06,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:06,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:06,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:06,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 10:47:06,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 10:47:06,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 10:47:06,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:06,237 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-09-30 10:47:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:06,907 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-09-30 10:47:06,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:47:06,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-09-30 10:47:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:06,908 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:47:06,908 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 10:47:06,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 10:47:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 10:47:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 10:47:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-09-30 10:47:06,912 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-09-30 10:47:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:06,913 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-09-30 10:47:06,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 10:47:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-09-30 10:47:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 10:47:06,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:06,913 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:06,914 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:06,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-09-30 10:47:06,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:06,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:06,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:06,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:06,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:07,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:07,126 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:07,133 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:07,191 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-09-30 10:47:07,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:07,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:07,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:07,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:47:07,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:47:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:47:07,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:07,322 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-09-30 10:47:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:07,592 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-09-30 10:47:07,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 10:47:07,593 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-09-30 10:47:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:07,594 INFO L225 Difference]: With dead ends: 83 [2018-09-30 10:47:07,594 INFO L226 Difference]: Without dead ends: 69 [2018-09-30 10:47:07,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-30 10:47:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-30 10:47:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 10:47:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-09-30 10:47:07,598 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-09-30 10:47:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:07,598 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-09-30 10:47:07,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:47:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-09-30 10:47:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 10:47:07,599 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:07,599 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:07,599 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:07,600 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-09-30 10:47:07,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:07,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:07,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:07,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:07,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:08,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:08,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:08,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:08,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:08,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:08,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:47:08,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:47:08,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:47:08,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:08,201 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-09-30 10:47:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:08,606 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-09-30 10:47:08,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:47:08,608 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-09-30 10:47:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:08,609 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:47:08,609 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 10:47:08,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 10:47:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 10:47:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 10:47:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-09-30 10:47:08,613 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-09-30 10:47:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:08,613 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-09-30 10:47:08,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:47:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-09-30 10:47:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 10:47:08,614 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:08,614 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:08,614 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:08,614 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:08,614 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-09-30 10:47:08,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:08,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:08,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:08,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:08,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:08,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:08,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:08,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:08,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:08,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:09,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:09,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 10:47:09,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 10:47:09,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 10:47:09,065 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:09,066 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-09-30 10:47:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:09,212 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-09-30 10:47:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 10:47:09,212 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-09-30 10:47:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:09,213 INFO L225 Difference]: With dead ends: 87 [2018-09-30 10:47:09,214 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 10:47:09,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 10:47:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 10:47:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 10:47:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-30 10:47:09,218 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-09-30 10:47:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:09,218 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-30 10:47:09,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 10:47:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-30 10:47:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-30 10:47:09,219 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:09,219 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:09,219 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:09,219 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-09-30 10:47:09,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:09,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:09,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:09,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:10,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:10,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:10,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:10,242 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-09-30 10:47:10,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:10,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:10,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:10,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:47:10,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 10:47:10,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 10:47:10,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:10,402 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-09-30 10:47:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:10,610 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-09-30 10:47:10,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:47:10,610 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-09-30 10:47:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:10,611 INFO L225 Difference]: With dead ends: 89 [2018-09-30 10:47:10,611 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 10:47:10,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 10:47:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 10:47:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 10:47:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-09-30 10:47:10,616 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-09-30 10:47:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:10,617 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-09-30 10:47:10,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 10:47:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-09-30 10:47:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:47:10,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:10,618 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:10,618 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:10,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:10,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-09-30 10:47:10,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:10,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:10,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:10,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:10,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:10,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:10,840 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:10,849 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:10,894 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:10,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:10,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:11,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:11,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:47:11,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:47:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:47:11,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:11,044 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-09-30 10:47:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:11,318 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-09-30 10:47:11,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:47:11,318 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-09-30 10:47:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:11,319 INFO L225 Difference]: With dead ends: 91 [2018-09-30 10:47:11,319 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 10:47:11,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 10:47:11,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 10:47:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 10:47:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-09-30 10:47:11,324 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-09-30 10:47:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:11,324 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-09-30 10:47:11,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:47:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-09-30 10:47:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 10:47:11,325 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:11,325 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:11,325 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:11,325 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:11,326 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-09-30 10:47:11,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:11,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:11,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:11,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:11,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:12,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:12,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:12,281 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:12,349 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-30 10:47:12,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:12,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:12,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:12,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 10:47:12,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 10:47:12,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 10:47:12,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:12,488 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-09-30 10:47:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:12,837 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-09-30 10:47:12,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:47:12,837 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-09-30 10:47:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:12,838 INFO L225 Difference]: With dead ends: 93 [2018-09-30 10:47:12,838 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:47:12,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:47:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 10:47:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:47:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-09-30 10:47:12,842 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-09-30 10:47:12,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:12,842 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-09-30 10:47:12,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 10:47:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-09-30 10:47:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:47:12,843 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:12,843 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:12,843 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:12,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-09-30 10:47:12,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:12,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:12,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:12,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:12,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:13,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:13,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:13,119 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:13,189 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-30 10:47:13,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:13,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:13,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:13,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:47:13,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 10:47:13,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 10:47:13,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:13,531 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-09-30 10:47:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:13,979 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-09-30 10:47:13,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:47:13,980 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-30 10:47:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:13,980 INFO L225 Difference]: With dead ends: 95 [2018-09-30 10:47:13,981 INFO L226 Difference]: Without dead ends: 81 [2018-09-30 10:47:13,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-30 10:47:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-30 10:47:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-30 10:47:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-09-30 10:47:13,986 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-09-30 10:47:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:13,986 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-09-30 10:47:13,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 10:47:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-09-30 10:47:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 10:47:13,987 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:13,987 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:13,987 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:13,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:13,988 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-09-30 10:47:13,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:13,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:13,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:14,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:14,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:14,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:14,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:14,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:14,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:47:14,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:47:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:47:14,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:14,482 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-09-30 10:47:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:14,837 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-09-30 10:47:14,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:47:14,837 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-09-30 10:47:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:14,838 INFO L225 Difference]: With dead ends: 97 [2018-09-30 10:47:14,838 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:47:14,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:47:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 10:47:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 10:47:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-09-30 10:47:14,843 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-09-30 10:47:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:14,843 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-09-30 10:47:14,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:47:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-09-30 10:47:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 10:47:14,844 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:14,844 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:14,844 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:14,845 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:14,845 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-09-30 10:47:14,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:14,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:14,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:14,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:14,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:15,175 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:15,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:15,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:15,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:15,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:15,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:15,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:15,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 10:47:15,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:47:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:47:15,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:15,374 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-09-30 10:47:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:15,700 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-09-30 10:47:15,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 10:47:15,701 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-09-30 10:47:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:15,702 INFO L225 Difference]: With dead ends: 99 [2018-09-30 10:47:15,702 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 10:47:15,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 10:47:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 10:47:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 10:47:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-09-30 10:47:15,709 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-09-30 10:47:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:15,709 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-09-30 10:47:15,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:47:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-09-30 10:47:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 10:47:15,710 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:15,710 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:15,710 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:15,710 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-09-30 10:47:15,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:15,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:15,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:15,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:15,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:16,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:16,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:16,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:16,148 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-30 10:47:16,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:16,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:16,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:16,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:47:16,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 10:47:16,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 10:47:16,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:16,294 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-09-30 10:47:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:16,473 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-09-30 10:47:16,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:47:16,474 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-09-30 10:47:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:16,475 INFO L225 Difference]: With dead ends: 101 [2018-09-30 10:47:16,475 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 10:47:16,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 10:47:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 10:47:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 10:47:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-09-30 10:47:16,480 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-09-30 10:47:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:16,480 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-09-30 10:47:16,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 10:47:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-09-30 10:47:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 10:47:16,481 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:16,481 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:16,482 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:16,482 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-09-30 10:47:16,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:16,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:16,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:16,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:16,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:16,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:16,796 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:16,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:16,856 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:16,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:16,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:17,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:17,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:47:17,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:47:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:47:17,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:17,033 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-09-30 10:47:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:17,260 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-09-30 10:47:17,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:47:17,260 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-09-30 10:47:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:17,261 INFO L225 Difference]: With dead ends: 103 [2018-09-30 10:47:17,261 INFO L226 Difference]: Without dead ends: 89 [2018-09-30 10:47:17,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-30 10:47:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-30 10:47:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 10:47:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-09-30 10:47:17,265 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-09-30 10:47:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:17,265 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-09-30 10:47:17,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:47:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-09-30 10:47:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 10:47:17,266 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:17,266 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:17,266 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:17,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-09-30 10:47:17,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:17,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:17,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:17,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:17,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:17,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:17,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:17,575 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:17,666 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 10:47:17,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:17,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:18,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:18,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 10:47:18,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 10:47:18,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 10:47:18,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:18,276 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-09-30 10:47:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:18,726 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-09-30 10:47:18,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:47:18,727 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-09-30 10:47:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:18,728 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:47:18,728 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 10:47:18,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 10:47:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 10:47:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 10:47:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-09-30 10:47:18,732 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-09-30 10:47:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:18,732 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-09-30 10:47:18,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 10:47:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-09-30 10:47:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 10:47:18,733 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:18,733 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:18,733 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:18,733 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:18,733 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-09-30 10:47:18,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:18,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:18,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:18,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:18,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:19,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:19,034 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:19,040 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:19,128 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-09-30 10:47:19,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:19,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:19,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:19,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:47:19,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:47:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:47:19,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:19,318 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-09-30 10:47:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:19,639 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-09-30 10:47:19,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 10:47:19,640 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-09-30 10:47:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:19,640 INFO L225 Difference]: With dead ends: 107 [2018-09-30 10:47:19,640 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 10:47:19,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 10:47:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 10:47:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 10:47:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-09-30 10:47:19,644 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-09-30 10:47:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:19,644 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-09-30 10:47:19,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:47:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-09-30 10:47:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 10:47:19,645 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:19,645 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:19,645 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:19,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:19,645 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-09-30 10:47:19,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:19,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:19,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:19,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:19,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:20,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:20,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:20,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:20,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:20,502 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:20,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:47:20,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:47:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:47:20,503 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:20,503 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-09-30 10:47:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:20,777 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-09-30 10:47:20,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:47:20,778 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-09-30 10:47:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:20,778 INFO L225 Difference]: With dead ends: 109 [2018-09-30 10:47:20,778 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 10:47:20,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 10:47:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 10:47:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 10:47:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-09-30 10:47:20,783 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-09-30 10:47:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:20,784 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-09-30 10:47:20,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:47:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-09-30 10:47:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 10:47:20,784 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:20,784 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:20,785 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:20,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-09-30 10:47:20,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:20,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:20,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:20,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:20,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:22,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:22,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:22,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:22,205 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:22,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:22,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:22,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:22,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 10:47:22,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 10:47:22,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 10:47:22,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:22,613 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-09-30 10:47:23,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:23,097 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-09-30 10:47:23,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 10:47:23,097 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-09-30 10:47:23,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:23,098 INFO L225 Difference]: With dead ends: 111 [2018-09-30 10:47:23,098 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 10:47:23,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 10:47:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 10:47:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 10:47:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-09-30 10:47:23,104 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-09-30 10:47:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:23,104 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-09-30 10:47:23,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 10:47:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-09-30 10:47:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-30 10:47:23,105 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:23,105 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:23,105 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:23,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-09-30 10:47:23,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:23,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:23,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:23,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:23,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:24,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:24,125 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:24,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:24,270 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-09-30 10:47:24,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:24,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:24,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:24,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:47:24,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 10:47:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 10:47:24,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:24,441 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-09-30 10:47:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:24,866 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-09-30 10:47:24,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:47:24,867 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-09-30 10:47:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:24,867 INFO L225 Difference]: With dead ends: 113 [2018-09-30 10:47:24,867 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 10:47:24,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 10:47:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 10:47:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:47:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-09-30 10:47:24,872 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-09-30 10:47:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:24,872 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-09-30 10:47:24,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 10:47:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-09-30 10:47:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:47:24,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:24,873 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:24,874 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:24,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-09-30 10:47:24,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:24,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:24,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:25,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:25,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:25,426 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:25,489 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:25,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:25,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:26,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:26,861 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:47:26,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:47:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:47:26,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:26,861 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-09-30 10:47:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:28,220 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-09-30 10:47:28,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:47:28,220 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-09-30 10:47:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:28,221 INFO L225 Difference]: With dead ends: 115 [2018-09-30 10:47:28,221 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 10:47:28,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 10:47:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 10:47:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 10:47:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-09-30 10:47:28,226 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-09-30 10:47:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:28,226 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-09-30 10:47:28,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:47:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-09-30 10:47:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 10:47:28,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:28,227 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:28,227 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:28,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:28,227 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-09-30 10:47:28,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:28,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:28,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:28,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:28,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:28,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:28,650 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:28,659 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:28,771 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-30 10:47:28,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:28,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:29,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:29,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 10:47:29,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 10:47:29,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 10:47:29,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:29,115 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-09-30 10:47:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:29,597 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-09-30 10:47:29,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:47:29,598 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-09-30 10:47:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:29,598 INFO L225 Difference]: With dead ends: 117 [2018-09-30 10:47:29,598 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:47:29,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:47:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 10:47:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 10:47:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-09-30 10:47:29,604 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-09-30 10:47:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:29,604 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-09-30 10:47:29,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 10:47:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-09-30 10:47:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 10:47:29,605 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:29,605 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:29,605 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:29,605 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-09-30 10:47:29,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:29,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:29,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:29,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:29,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:30,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:30,069 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:30,079 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:30,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-09-30 10:47:30,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:30,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:30,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:30,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:47:30,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 10:47:30,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 10:47:30,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:30,380 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-09-30 10:47:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:30,726 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-09-30 10:47:30,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 10:47:30,727 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-09-30 10:47:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:30,728 INFO L225 Difference]: With dead ends: 119 [2018-09-30 10:47:30,728 INFO L226 Difference]: Without dead ends: 105 [2018-09-30 10:47:30,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-30 10:47:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-30 10:47:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-30 10:47:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-09-30 10:47:30,734 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-09-30 10:47:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:30,734 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-09-30 10:47:30,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 10:47:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-09-30 10:47:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 10:47:30,735 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:30,735 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:30,735 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:30,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:30,736 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-09-30 10:47:30,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:30,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:30,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:30,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:30,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:31,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:31,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:31,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:31,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:31,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:31,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:47:31,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:47:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:47:31,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:31,735 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-09-30 10:47:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:31,951 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-09-30 10:47:31,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:47:31,951 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-09-30 10:47:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:31,952 INFO L225 Difference]: With dead ends: 121 [2018-09-30 10:47:31,952 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 10:47:31,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 10:47:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 10:47:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 10:47:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-09-30 10:47:31,959 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-09-30 10:47:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:31,959 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-09-30 10:47:31,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:47:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-09-30 10:47:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 10:47:31,960 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:31,960 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:31,960 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:31,960 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-09-30 10:47:31,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:31,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:31,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:31,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:32,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:32,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:32,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:32,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:32,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:32,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:32,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:32,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:47:32,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:47:32,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:47:32,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:32,743 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-09-30 10:47:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:33,296 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-09-30 10:47:33,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:47:33,296 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-09-30 10:47:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:33,297 INFO L225 Difference]: With dead ends: 123 [2018-09-30 10:47:33,297 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 10:47:33,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 10:47:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 10:47:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:47:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-09-30 10:47:33,302 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-09-30 10:47:33,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:33,303 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-09-30 10:47:33,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:47:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-09-30 10:47:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 10:47:33,304 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:33,304 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:33,304 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:33,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:33,304 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-09-30 10:47:33,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:33,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:33,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:33,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:33,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:33,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:33,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:33,684 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:33,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-09-30 10:47:33,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:33,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:34,119 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:34,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 10:47:34,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:47:34,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:47:34,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:34,120 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-09-30 10:47:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:34,489 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-09-30 10:47:34,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:47:34,489 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-09-30 10:47:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:34,490 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:47:34,490 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 10:47:34,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 10:47:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 10:47:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 10:47:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-09-30 10:47:34,496 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-09-30 10:47:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:34,496 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-09-30 10:47:34,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:47:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-09-30 10:47:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:47:34,497 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:34,497 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:34,497 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:34,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-09-30 10:47:34,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:34,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:34,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:34,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:34,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:35,208 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:35,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:35,217 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:35,300 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:35,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:35,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:35,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:35,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:47:35,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 10:47:35,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 10:47:35,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:35,490 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-09-30 10:47:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:35,978 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-09-30 10:47:35,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 10:47:35,979 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-09-30 10:47:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:35,979 INFO L225 Difference]: With dead ends: 127 [2018-09-30 10:47:35,979 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 10:47:35,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 10:47:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 10:47:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 10:47:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-09-30 10:47:35,984 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-09-30 10:47:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:35,984 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-09-30 10:47:35,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 10:47:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-09-30 10:47:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-30 10:47:35,985 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:35,985 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:35,986 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:35,986 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-09-30 10:47:35,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:35,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:35,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:35,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:35,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:36,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:36,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:36,369 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:36,512 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 10:47:36,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:36,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:36,880 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:36,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 10:47:36,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 10:47:36,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 10:47:36,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:36,881 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-09-30 10:47:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:37,275 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-09-30 10:47:37,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:47:37,276 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-09-30 10:47:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:37,277 INFO L225 Difference]: With dead ends: 129 [2018-09-30 10:47:37,277 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 10:47:37,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 10:47:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 10:47:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 10:47:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-09-30 10:47:37,282 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-09-30 10:47:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:37,283 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-09-30 10:47:37,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 10:47:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-09-30 10:47:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 10:47:37,283 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:37,284 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:37,284 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:37,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-09-30 10:47:37,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:37,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:37,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:37,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:37,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:37,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:37,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:37,801 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:37,929 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-30 10:47:37,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:37,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:38,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:38,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:47:38,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:47:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:47:38,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:38,133 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-09-30 10:47:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:38,597 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-09-30 10:47:38,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 10:47:38,598 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-09-30 10:47:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:38,598 INFO L225 Difference]: With dead ends: 131 [2018-09-30 10:47:38,598 INFO L226 Difference]: Without dead ends: 117 [2018-09-30 10:47:38,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-30 10:47:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-30 10:47:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 10:47:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-09-30 10:47:38,603 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-09-30 10:47:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:38,603 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-09-30 10:47:38,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:47:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-09-30 10:47:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 10:47:38,604 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:38,604 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:38,604 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:38,604 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:38,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-09-30 10:47:38,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:38,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:38,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:38,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:38,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:39,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:39,010 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:39,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:39,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:39,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:39,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:47:39,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:47:39,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:47:39,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:39,663 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-09-30 10:47:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:40,227 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-09-30 10:47:40,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:47:40,228 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-09-30 10:47:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:40,228 INFO L225 Difference]: With dead ends: 133 [2018-09-30 10:47:40,229 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 10:47:40,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 10:47:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 10:47:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:47:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-09-30 10:47:40,233 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-09-30 10:47:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:40,233 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-09-30 10:47:40,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:47:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-09-30 10:47:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:47:40,234 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:40,234 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:40,234 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:40,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:40,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-09-30 10:47:40,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:40,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:40,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:40,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:40,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:40,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:40,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:40,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:40,669 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:40,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:40,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:41,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:41,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 10:47:41,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 10:47:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 10:47:41,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:41,827 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-09-30 10:47:42,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:42,624 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-09-30 10:47:42,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 10:47:42,624 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-09-30 10:47:42,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:42,625 INFO L225 Difference]: With dead ends: 135 [2018-09-30 10:47:42,625 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 10:47:42,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 10:47:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 10:47:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 10:47:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-09-30 10:47:42,631 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-09-30 10:47:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:42,631 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-09-30 10:47:42,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 10:47:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-09-30 10:47:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-30 10:47:42,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:42,632 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:42,632 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:42,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-09-30 10:47:42,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:42,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:42,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:42,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:42,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:42,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:42,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:42,928 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:43,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-09-30 10:47:43,067 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:43,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:43,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:43,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:47:43,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 10:47:43,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 10:47:43,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:43,398 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-09-30 10:47:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:43,880 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-09-30 10:47:43,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:47:43,881 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-09-30 10:47:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:43,882 INFO L225 Difference]: With dead ends: 137 [2018-09-30 10:47:43,882 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:47:43,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:47:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 10:47:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 10:47:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-09-30 10:47:43,888 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-09-30 10:47:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:43,888 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-09-30 10:47:43,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 10:47:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-09-30 10:47:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 10:47:43,889 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:43,889 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:43,889 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:43,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-09-30 10:47:43,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:43,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:43,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:43,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:43,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:44,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:44,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:44,550 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:44,630 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:44,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:44,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:44,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:44,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:47:44,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:47:44,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:47:44,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:44,944 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-09-30 10:47:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:45,523 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-09-30 10:47:45,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:47:45,524 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-09-30 10:47:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:45,524 INFO L225 Difference]: With dead ends: 139 [2018-09-30 10:47:45,524 INFO L226 Difference]: Without dead ends: 125 [2018-09-30 10:47:45,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-30 10:47:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-30 10:47:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 10:47:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-09-30 10:47:45,528 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-09-30 10:47:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:45,529 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-09-30 10:47:45,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:47:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-09-30 10:47:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 10:47:45,529 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:45,529 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:45,529 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:45,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-09-30 10:47:45,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:45,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:45,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:45,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:45,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:45,842 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:45,978 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 10:47:45,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:45,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:46,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:46,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 10:47:46,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 10:47:46,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 10:47:46,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:46,312 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-09-30 10:47:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:46,929 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-09-30 10:47:46,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:47:46,929 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-09-30 10:47:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:46,930 INFO L225 Difference]: With dead ends: 141 [2018-09-30 10:47:46,930 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 10:47:46,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 10:47:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 10:47:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 10:47:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-09-30 10:47:46,935 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-09-30 10:47:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:46,935 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-09-30 10:47:46,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 10:47:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-09-30 10:47:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 10:47:46,935 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:46,936 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:46,936 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:46,936 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-09-30 10:47:46,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:46,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:46,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:46,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:46,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:47,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:47,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:47,481 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:47,623 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-09-30 10:47:47,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:47,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:47,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:47,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 10:47:47,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 10:47:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 10:47:47,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:47,851 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-09-30 10:47:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:48,459 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-09-30 10:47:48,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 10:47:48,459 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-09-30 10:47:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:48,460 INFO L225 Difference]: With dead ends: 143 [2018-09-30 10:47:48,460 INFO L226 Difference]: Without dead ends: 129 [2018-09-30 10:47:48,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-30 10:47:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-30 10:47:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 10:47:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-09-30 10:47:48,466 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-09-30 10:47:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:48,466 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-09-30 10:47:48,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 10:47:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-09-30 10:47:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:47:48,467 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:48,467 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:48,467 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:48,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-09-30 10:47:48,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:48,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:48,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:48,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:48,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:48,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:48,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:49,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:49,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 10:47:49,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 10:47:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 10:47:49,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:49,129 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-09-30 10:47:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:49,877 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-09-30 10:47:49,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:47:49,878 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-09-30 10:47:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:49,879 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:47:49,879 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 10:47:49,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 10:47:49,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 10:47:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 10:47:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-09-30 10:47:49,884 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-09-30 10:47:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:49,885 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-09-30 10:47:49,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 10:47:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-09-30 10:47:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 10:47:49,886 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:49,886 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:49,886 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:49,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-09-30 10:47:49,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:49,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:49,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:49,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:49,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:50,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:50,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:50,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:50,463 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:50,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:50,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:50,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:50,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 10:47:50,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:47:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:47:50,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:50,691 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-09-30 10:47:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:51,347 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-09-30 10:47:51,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 10:47:51,348 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-09-30 10:47:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:51,349 INFO L225 Difference]: With dead ends: 147 [2018-09-30 10:47:51,349 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:47:51,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:47:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 10:47:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 10:47:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-09-30 10:47:51,354 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-09-30 10:47:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:51,355 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-09-30 10:47:51,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:47:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-09-30 10:47:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-30 10:47:51,356 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:51,356 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:51,356 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:51,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-09-30 10:47:51,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:51,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:51,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:51,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:51,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:51,719 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:51,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:51,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:47:51,884 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-30 10:47:51,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:51,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:52,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:52,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 10:47:52,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 10:47:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 10:47:52,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:52,113 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-09-30 10:47:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:52,762 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-09-30 10:47:52,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:47:52,762 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-09-30 10:47:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:52,763 INFO L225 Difference]: With dead ends: 149 [2018-09-30 10:47:52,763 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 10:47:52,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 10:47:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 10:47:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 10:47:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-09-30 10:47:52,768 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-09-30 10:47:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:52,768 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-09-30 10:47:52,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 10:47:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-09-30 10:47:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:47:52,769 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:52,769 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:52,769 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:52,769 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:52,769 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-09-30 10:47:52,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:52,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:52,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:52,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:52,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:53,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:53,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:53,102 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:47:53,192 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:47:53,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:53,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:53,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:53,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 10:47:53,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 10:47:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 10:47:53,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:53,487 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-09-30 10:47:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:54,011 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-09-30 10:47:54,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 10:47:54,011 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-09-30 10:47:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:54,012 INFO L225 Difference]: With dead ends: 151 [2018-09-30 10:47:54,012 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 10:47:54,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 10:47:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 10:47:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 10:47:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-09-30 10:47:54,018 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-09-30 10:47:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:54,018 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-09-30 10:47:54,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 10:47:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-09-30 10:47:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-30 10:47:54,018 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:54,019 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:54,019 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:54,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-09-30 10:47:54,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:54,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:54,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:54,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:54,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:54,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:54,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:54,401 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:47:54,567 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-30 10:47:54,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:54,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:55,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:55,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 10:47:55,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 10:47:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 10:47:55,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:55,098 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-09-30 10:47:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:55,816 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-09-30 10:47:55,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:47:55,816 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-09-30 10:47:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:55,817 INFO L225 Difference]: With dead ends: 153 [2018-09-30 10:47:55,817 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 10:47:55,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 10:47:55,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 10:47:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:47:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-09-30 10:47:55,822 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-09-30 10:47:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:55,822 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-09-30 10:47:55,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 10:47:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-09-30 10:47:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:47:55,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:55,823 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:55,823 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:55,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-09-30 10:47:55,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:55,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:55,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:55,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:55,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:56,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:56,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:56,185 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:47:56,356 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-09-30 10:47:56,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:56,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:56,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:56,599 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 10:47:56,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:47:56,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:47:56,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:56,600 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-09-30 10:47:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:57,357 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-09-30 10:47:57,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 10:47:57,357 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-09-30 10:47:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:57,358 INFO L225 Difference]: With dead ends: 155 [2018-09-30 10:47:57,358 INFO L226 Difference]: Without dead ends: 141 [2018-09-30 10:47:57,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-30 10:47:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-30 10:47:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-30 10:47:57,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-09-30 10:47:57,365 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-09-30 10:47:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:57,366 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-09-30 10:47:57,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:47:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-09-30 10:47:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 10:47:57,367 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:57,367 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:57,367 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:57,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:57,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-09-30 10:47:57,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:57,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:57,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:57,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:47:57,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:57,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:57,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:57,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:57,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:58,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:58,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 10:47:58,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 10:47:58,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 10:47:58,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:58,070 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-09-30 10:47:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:58,828 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-09-30 10:47:58,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:47:58,829 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-09-30 10:47:58,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:58,829 INFO L225 Difference]: With dead ends: 157 [2018-09-30 10:47:58,830 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:47:58,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:47:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 10:47:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 10:47:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-09-30 10:47:58,834 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-09-30 10:47:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:58,834 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-09-30 10:47:58,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 10:47:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-09-30 10:47:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 10:47:58,835 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:58,835 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:47:58,835 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:58,835 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-09-30 10:47:58,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:58,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:58,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:58,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:58,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:59,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:59,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:59,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:47:59,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:47:59,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:47:59,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:47:59,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:59,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 10:47:59,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 10:47:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 10:47:59,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:59,581 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-09-30 10:48:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:00,925 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-09-30 10:48:00,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 10:48:00,925 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-09-30 10:48:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:00,926 INFO L225 Difference]: With dead ends: 159 [2018-09-30 10:48:00,926 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 10:48:00,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 10:48:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 10:48:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 10:48:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-09-30 10:48:00,931 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-09-30 10:48:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:00,931 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-09-30 10:48:00,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 10:48:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-09-30 10:48:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-30 10:48:00,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:00,932 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:00,933 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:00,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:00,933 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-09-30 10:48:00,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:00,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:00,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:00,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:00,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:01,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:01,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:01,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:48:01,502 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-09-30 10:48:01,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:01,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:01,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:01,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 10:48:01,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 10:48:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 10:48:01,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:01,755 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-09-30 10:48:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:02,597 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-09-30 10:48:02,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:48:02,597 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-09-30 10:48:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:02,598 INFO L225 Difference]: With dead ends: 161 [2018-09-30 10:48:02,598 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 10:48:02,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 10:48:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 10:48:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 10:48:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-09-30 10:48:02,605 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-09-30 10:48:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:02,605 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-09-30 10:48:02,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 10:48:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-09-30 10:48:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:48:02,606 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:02,606 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:02,606 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:02,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-09-30 10:48:02,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:02,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:02,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:02,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:02,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:02,996 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:03,003 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:48:03,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:48:03,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:03,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:03,438 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:03,438 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 10:48:03,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:48:03,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:48:03,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:03,439 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-09-30 10:48:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:04,207 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-09-30 10:48:04,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 10:48:04,208 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-09-30 10:48:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:04,208 INFO L225 Difference]: With dead ends: 163 [2018-09-30 10:48:04,208 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 10:48:04,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 10:48:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 10:48:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 10:48:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-09-30 10:48:04,216 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-09-30 10:48:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:04,216 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-09-30 10:48:04,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:48:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-09-30 10:48:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 10:48:04,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:04,217 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:04,217 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:04,217 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:04,217 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-09-30 10:48:04,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:04,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:04,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:04,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:04,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:04,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:04,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:04,649 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:48:04,852 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-30 10:48:04,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:04,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:05,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:05,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 10:48:05,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 10:48:05,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 10:48:05,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:05,155 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-09-30 10:48:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:05,784 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-09-30 10:48:05,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:48:05,785 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-09-30 10:48:05,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:05,785 INFO L225 Difference]: With dead ends: 165 [2018-09-30 10:48:05,786 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 10:48:05,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 10:48:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 10:48:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 10:48:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-09-30 10:48:05,793 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-09-30 10:48:05,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:05,793 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-09-30 10:48:05,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 10:48:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-09-30 10:48:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 10:48:05,794 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:05,794 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:05,794 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:05,794 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-09-30 10:48:05,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:05,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:05,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:05,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:05,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:06,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:06,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:06,563 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:48:06,748 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-30 10:48:06,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:06,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:07,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:07,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 10:48:07,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 10:48:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 10:48:07,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:07,022 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-09-30 10:48:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:07,838 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-09-30 10:48:07,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 10:48:07,838 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-09-30 10:48:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:07,839 INFO L225 Difference]: With dead ends: 167 [2018-09-30 10:48:07,839 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 10:48:07,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 10:48:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-30 10:48:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-30 10:48:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-09-30 10:48:07,844 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-09-30 10:48:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:07,844 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-09-30 10:48:07,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 10:48:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-09-30 10:48:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-30 10:48:07,845 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:07,845 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:07,845 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:07,845 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-09-30 10:48:07,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:07,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:07,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:07,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:07,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:08,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:08,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:08,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:08,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:08,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:08,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 10:48:08,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 10:48:08,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 10:48:08,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:08,753 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-09-30 10:48:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:09,625 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-09-30 10:48:09,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:48:09,625 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-09-30 10:48:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:09,626 INFO L225 Difference]: With dead ends: 169 [2018-09-30 10:48:09,626 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 10:48:09,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 10:48:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 10:48:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 10:48:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-09-30 10:48:09,631 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-09-30 10:48:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:09,631 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-09-30 10:48:09,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 10:48:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-09-30 10:48:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 10:48:09,631 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:09,632 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:09,632 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:09,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-09-30 10:48:09,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:09,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:09,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:09,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:09,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:10,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:10,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:10,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:48:10,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:48:10,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:10,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:10,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:10,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 10:48:10,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:48:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:48:10,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:10,945 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-09-30 10:48:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:11,731 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-09-30 10:48:11,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 10:48:11,732 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-09-30 10:48:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:11,732 INFO L225 Difference]: With dead ends: 171 [2018-09-30 10:48:11,732 INFO L226 Difference]: Without dead ends: 157 [2018-09-30 10:48:11,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-30 10:48:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-30 10:48:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-30 10:48:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-09-30 10:48:11,737 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-09-30 10:48:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:11,738 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-09-30 10:48:11,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:48:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-09-30 10:48:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-30 10:48:11,738 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:11,738 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:11,739 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:11,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:11,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-09-30 10:48:11,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:11,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:11,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:11,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:12,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:12,151 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:12,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:48:12,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-30 10:48:12,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:12,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:12,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:12,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 10:48:12,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 10:48:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 10:48:12,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:12,633 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-09-30 10:48:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:13,398 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-09-30 10:48:13,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:48:13,399 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-09-30 10:48:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:13,399 INFO L225 Difference]: With dead ends: 173 [2018-09-30 10:48:13,400 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 10:48:13,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 10:48:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 10:48:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 10:48:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-09-30 10:48:13,404 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-09-30 10:48:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:13,405 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-09-30 10:48:13,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 10:48:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-09-30 10:48:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:48:13,405 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:13,405 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:13,406 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:13,406 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:13,406 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-09-30 10:48:13,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:13,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:13,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:13,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:13,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:13,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:13,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:13,846 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:48:13,945 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:48:13,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:13,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:14,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:14,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 10:48:14,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 10:48:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 10:48:14,244 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:14,245 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-09-30 10:48:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:15,375 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-09-30 10:48:15,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 10:48:15,375 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-09-30 10:48:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:15,376 INFO L225 Difference]: With dead ends: 175 [2018-09-30 10:48:15,376 INFO L226 Difference]: Without dead ends: 161 [2018-09-30 10:48:15,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-30 10:48:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-30 10:48:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-30 10:48:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-09-30 10:48:15,383 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-09-30 10:48:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:15,383 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-09-30 10:48:15,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 10:48:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-09-30 10:48:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-30 10:48:15,384 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:15,384 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:15,385 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:15,385 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:15,385 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-09-30 10:48:15,385 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:15,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:15,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:15,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:15,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:15,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:15,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:15,818 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:48:16,018 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-30 10:48:16,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:16,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:16,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:16,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 10:48:16,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 10:48:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 10:48:16,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:16,343 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-09-30 10:48:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:17,277 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-09-30 10:48:17,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:48:17,278 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-09-30 10:48:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:17,279 INFO L225 Difference]: With dead ends: 177 [2018-09-30 10:48:17,279 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:48:17,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:48:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 10:48:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 10:48:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-09-30 10:48:17,287 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-09-30 10:48:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:17,287 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-09-30 10:48:17,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 10:48:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-09-30 10:48:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 10:48:17,288 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:17,288 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:17,288 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:17,289 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-09-30 10:48:17,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:17,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:17,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:17,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:17,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:17,797 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:17,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:17,805 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:48:18,044 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-09-30 10:48:18,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:18,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:18,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:18,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 10:48:18,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:48:18,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:48:18,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:18,318 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-09-30 10:48:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:18,950 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-09-30 10:48:18,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 10:48:18,950 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-09-30 10:48:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:18,951 INFO L225 Difference]: With dead ends: 179 [2018-09-30 10:48:18,951 INFO L226 Difference]: Without dead ends: 165 [2018-09-30 10:48:18,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-30 10:48:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-09-30 10:48:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-30 10:48:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-09-30 10:48:18,956 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-09-30 10:48:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:18,957 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-09-30 10:48:18,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:48:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-09-30 10:48:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-30 10:48:18,958 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:18,958 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:18,958 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:18,958 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-09-30 10:48:18,959 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:18,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:18,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:18,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:18,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:19,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:19,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:19,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:19,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:19,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:19,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 10:48:19,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 10:48:19,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 10:48:19,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:19,922 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-09-30 10:48:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:21,016 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-09-30 10:48:21,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:48:21,017 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-09-30 10:48:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:21,017 INFO L225 Difference]: With dead ends: 181 [2018-09-30 10:48:21,017 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 10:48:21,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 10:48:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 10:48:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 10:48:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-09-30 10:48:21,023 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-09-30 10:48:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:21,023 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-09-30 10:48:21,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 10:48:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-09-30 10:48:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 10:48:21,024 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:21,024 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:21,024 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:21,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-09-30 10:48:21,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:21,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:21,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:21,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:21,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:21,487 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:21,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:21,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:48:21,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:48:21,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:21,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:21,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:21,887 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 10:48:21,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 10:48:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 10:48:21,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:21,888 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-09-30 10:48:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:22,737 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-09-30 10:48:22,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 10:48:22,738 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-09-30 10:48:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:22,738 INFO L225 Difference]: With dead ends: 183 [2018-09-30 10:48:22,738 INFO L226 Difference]: Without dead ends: 169 [2018-09-30 10:48:22,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-30 10:48:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-30 10:48:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 10:48:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-09-30 10:48:22,744 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-09-30 10:48:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:22,744 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-09-30 10:48:22,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 10:48:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-09-30 10:48:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 10:48:22,744 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:22,745 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:22,745 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:22,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:22,745 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-09-30 10:48:22,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:22,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:22,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:22,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:22,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:23,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:23,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:23,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:48:23,616 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-09-30 10:48:23,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:23,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:23,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:23,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 10:48:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 10:48:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 10:48:23,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:23,897 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-09-30 10:48:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:24,585 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-09-30 10:48:24,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:48:24,585 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-09-30 10:48:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:24,586 INFO L225 Difference]: With dead ends: 185 [2018-09-30 10:48:24,586 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 10:48:24,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 10:48:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 10:48:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 10:48:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-09-30 10:48:24,591 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-09-30 10:48:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:24,591 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-09-30 10:48:24,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 10:48:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-09-30 10:48:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 10:48:24,592 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:24,592 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:24,592 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:24,592 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:24,593 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-09-30 10:48:24,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:24,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:24,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:24,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:24,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:25,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:25,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:25,085 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:48:25,192 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:48:25,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:25,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:25,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:25,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 10:48:25,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:48:25,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:48:25,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:25,616 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-09-30 10:48:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:26,313 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-09-30 10:48:26,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 10:48:26,314 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-09-30 10:48:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:26,314 INFO L225 Difference]: With dead ends: 187 [2018-09-30 10:48:26,314 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 10:48:26,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 10:48:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-30 10:48:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 10:48:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-09-30 10:48:26,322 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-09-30 10:48:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:26,322 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-09-30 10:48:26,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:48:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-09-30 10:48:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-30 10:48:26,323 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:26,323 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:26,323 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:26,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-09-30 10:48:26,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:26,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:26,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:26,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:26,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:26,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:26,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:26,859 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:48:27,086 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-09-30 10:48:27,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:27,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:27,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:27,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 10:48:27,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 10:48:27,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 10:48:27,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:27,373 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-09-30 10:48:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:28,050 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-09-30 10:48:28,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:48:28,050 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-09-30 10:48:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:28,051 INFO L225 Difference]: With dead ends: 189 [2018-09-30 10:48:28,051 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 10:48:28,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 10:48:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 10:48:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 10:48:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-09-30 10:48:28,059 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-09-30 10:48:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:28,060 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-09-30 10:48:28,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 10:48:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-09-30 10:48:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 10:48:28,061 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:28,061 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:28,061 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:28,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-09-30 10:48:28,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:28,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:28,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:28,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:28,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:28,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:28,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:28,610 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:48:28,847 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-09-30 10:48:28,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:28,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:29,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:29,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 10:48:29,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 10:48:29,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 10:48:29,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:29,137 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-09-30 10:48:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:30,036 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-09-30 10:48:30,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:48:30,037 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-09-30 10:48:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:30,038 INFO L225 Difference]: With dead ends: 191 [2018-09-30 10:48:30,038 INFO L226 Difference]: Without dead ends: 177 [2018-09-30 10:48:30,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-09-30 10:48:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-09-30 10:48:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-30 10:48:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-09-30 10:48:30,043 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-09-30 10:48:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:30,043 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-09-30 10:48:30,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 10:48:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-09-30 10:48:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-30 10:48:30,044 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:30,044 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:30,044 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:30,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-09-30 10:48:30,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:30,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:30,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:30,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:30,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:30,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:30,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:30,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:30,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:31,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:31,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 10:48:31,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 10:48:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 10:48:31,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:31,274 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-09-30 10:48:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:32,194 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-09-30 10:48:32,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:48:32,195 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-09-30 10:48:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:32,196 INFO L225 Difference]: With dead ends: 193 [2018-09-30 10:48:32,196 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 10:48:32,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 10:48:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 10:48:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 10:48:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-09-30 10:48:32,201 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-09-30 10:48:32,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:32,201 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-09-30 10:48:32,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 10:48:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-09-30 10:48:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 10:48:32,202 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:32,202 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:32,202 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:32,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-09-30 10:48:32,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:32,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:32,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:32,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:32,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:32,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:32,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:32,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:48:32,834 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:48:32,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:32,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:33,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:33,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 10:48:33,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:48:33,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:48:33,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:33,143 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-09-30 10:48:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:34,032 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-09-30 10:48:34,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 10:48:34,033 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-09-30 10:48:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:34,034 INFO L225 Difference]: With dead ends: 195 [2018-09-30 10:48:34,034 INFO L226 Difference]: Without dead ends: 181 [2018-09-30 10:48:34,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-30 10:48:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-30 10:48:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-30 10:48:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-09-30 10:48:34,039 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-09-30 10:48:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:34,039 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-09-30 10:48:34,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:48:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-09-30 10:48:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-30 10:48:34,040 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:34,040 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:34,040 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:34,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-09-30 10:48:34,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:34,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:34,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:34,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:34,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:34,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:34,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:34,581 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:48:34,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-09-30 10:48:34,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:34,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:35,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:35,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 10:48:35,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 10:48:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 10:48:35,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:35,242 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-09-30 10:48:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:36,042 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-09-30 10:48:36,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:48:36,042 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-09-30 10:48:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:36,043 INFO L225 Difference]: With dead ends: 197 [2018-09-30 10:48:36,043 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 10:48:36,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 10:48:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 10:48:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 10:48:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-09-30 10:48:36,049 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-09-30 10:48:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:36,049 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-09-30 10:48:36,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 10:48:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-09-30 10:48:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 10:48:36,051 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:36,051 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:36,051 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:36,051 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:36,051 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-09-30 10:48:36,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:36,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:36,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:36,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:36,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:36,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:36,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:36,599 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:48:36,720 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:48:36,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:36,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:37,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:37,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 10:48:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 10:48:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 10:48:37,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:37,032 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-09-30 10:48:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:37,998 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-09-30 10:48:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 10:48:37,999 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-09-30 10:48:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:38,000 INFO L225 Difference]: With dead ends: 199 [2018-09-30 10:48:38,000 INFO L226 Difference]: Without dead ends: 185 [2018-09-30 10:48:38,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-30 10:48:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-30 10:48:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-30 10:48:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-09-30 10:48:38,008 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-09-30 10:48:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:38,008 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-09-30 10:48:38,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 10:48:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-09-30 10:48:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-30 10:48:38,009 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:38,009 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:38,009 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:38,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-09-30 10:48:38,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:38,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:38,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:38,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:38,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:38,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:38,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:48:38,571 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:48:38,817 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-09-30 10:48:38,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:38,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:39,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:39,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 10:48:39,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 10:48:39,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 10:48:39,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:39,130 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-09-30 10:48:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:40,140 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-09-30 10:48:40,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 10:48:40,140 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-09-30 10:48:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:40,141 INFO L225 Difference]: With dead ends: 201 [2018-09-30 10:48:40,141 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 10:48:40,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 10:48:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 10:48:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 10:48:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-09-30 10:48:40,149 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-09-30 10:48:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:40,149 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-09-30 10:48:40,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 10:48:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-09-30 10:48:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 10:48:40,150 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:40,150 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:40,151 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:40,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-09-30 10:48:40,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:40,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:40,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:40,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:40,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:40,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:40,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:40,865 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:48:41,122 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-09-30 10:48:41,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:41,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:41,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:41,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 10:48:41,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:48:41,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:48:41,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:41,457 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-09-30 10:48:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:42,210 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-09-30 10:48:42,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 10:48:42,210 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-09-30 10:48:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:42,211 INFO L225 Difference]: With dead ends: 203 [2018-09-30 10:48:42,211 INFO L226 Difference]: Without dead ends: 189 [2018-09-30 10:48:42,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-09-30 10:48:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-09-30 10:48:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 10:48:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-09-30 10:48:42,216 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-09-30 10:48:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:42,217 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-09-30 10:48:42,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:48:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-09-30 10:48:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 10:48:42,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:42,218 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:42,218 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:42,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-09-30 10:48:42,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:42,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:42,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:42,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:42,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:42,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:42,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:42,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:42,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:43,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:43,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 10:48:43,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 10:48:43,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 10:48:43,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:43,257 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-09-30 10:48:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:44,031 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-09-30 10:48:44,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 10:48:44,032 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-09-30 10:48:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:44,032 INFO L225 Difference]: With dead ends: 205 [2018-09-30 10:48:44,033 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 10:48:44,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 10:48:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 10:48:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 10:48:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-09-30 10:48:44,038 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-09-30 10:48:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:44,038 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-09-30 10:48:44,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 10:48:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-09-30 10:48:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 10:48:44,039 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:44,039 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:44,040 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:44,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-09-30 10:48:44,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:44,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:44,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:44,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:44,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:44,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:44,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:44,642 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:48:44,765 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:48:44,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:44,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:45,088 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:45,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 10:48:45,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 10:48:45,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 10:48:45,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:45,089 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-09-30 10:48:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:46,178 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-09-30 10:48:46,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 10:48:46,178 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-09-30 10:48:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:46,179 INFO L225 Difference]: With dead ends: 207 [2018-09-30 10:48:46,179 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 10:48:46,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 10:48:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-30 10:48:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-30 10:48:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-09-30 10:48:46,184 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-09-30 10:48:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:46,185 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-09-30 10:48:46,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 10:48:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-09-30 10:48:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-30 10:48:46,185 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:46,186 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:46,186 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:46,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:46,186 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-09-30 10:48:46,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:46,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:46,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:46,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:46,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:46,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:46,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:46,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:48:47,176 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-09-30 10:48:47,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:47,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:47,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:47,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 10:48:47,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 10:48:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 10:48:47,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:47,508 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-09-30 10:48:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:48,304 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-09-30 10:48:48,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 10:48:48,304 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-09-30 10:48:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:48,305 INFO L225 Difference]: With dead ends: 209 [2018-09-30 10:48:48,305 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 10:48:48,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 10:48:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 10:48:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 10:48:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-09-30 10:48:48,311 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-09-30 10:48:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:48,311 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-09-30 10:48:48,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 10:48:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-09-30 10:48:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 10:48:48,313 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:48,313 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:48,313 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:48,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:48,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-09-30 10:48:48,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:48,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:48,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:48,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:48,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:48,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:48,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:48,928 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:48:49,052 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:48:49,052 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:49,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:49,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:49,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 10:48:49,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 10:48:49,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 10:48:49,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:49,385 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-09-30 10:48:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:50,588 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-09-30 10:48:50,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 10:48:50,588 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-09-30 10:48:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:50,589 INFO L225 Difference]: With dead ends: 211 [2018-09-30 10:48:50,589 INFO L226 Difference]: Without dead ends: 197 [2018-09-30 10:48:50,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-09-30 10:48:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-09-30 10:48:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-30 10:48:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-09-30 10:48:50,595 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-09-30 10:48:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:50,595 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-09-30 10:48:50,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 10:48:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-09-30 10:48:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-30 10:48:50,597 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:50,597 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:50,597 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:50,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:50,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-09-30 10:48:50,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:50,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:50,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:50,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:50,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:51,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:51,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:51,393 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:48:51,667 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-09-30 10:48:51,668 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:51,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:52,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:52,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 10:48:52,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 10:48:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 10:48:52,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:52,005 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-09-30 10:48:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:53,111 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-09-30 10:48:53,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 10:48:53,111 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-09-30 10:48:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:53,112 INFO L225 Difference]: With dead ends: 213 [2018-09-30 10:48:53,112 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 10:48:53,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 10:48:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 10:48:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 10:48:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-09-30 10:48:53,118 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-09-30 10:48:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:53,118 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-09-30 10:48:53,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 10:48:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-09-30 10:48:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 10:48:53,119 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:53,119 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:53,119 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:53,120 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:53,120 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-09-30 10:48:53,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:53,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:53,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:53,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:53,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:53,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:53,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:53,733 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:48:54,018 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-09-30 10:48:54,019 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:54,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:54,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:54,376 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 10:48:54,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 10:48:54,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 10:48:54,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:54,377 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-09-30 10:48:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:55,422 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-09-30 10:48:55,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 10:48:55,422 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-09-30 10:48:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:55,423 INFO L225 Difference]: With dead ends: 215 [2018-09-30 10:48:55,423 INFO L226 Difference]: Without dead ends: 201 [2018-09-30 10:48:55,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-30 10:48:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-09-30 10:48:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-30 10:48:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-09-30 10:48:55,429 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-09-30 10:48:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:55,429 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-09-30 10:48:55,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 10:48:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-09-30 10:48:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-30 10:48:55,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:55,430 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:55,430 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:55,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-09-30 10:48:55,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:55,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:55,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:55,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:48:55,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:56,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:56,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:56,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:56,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:56,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:56,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 10:48:56,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 10:48:56,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 10:48:56,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:56,745 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-09-30 10:48:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:48:57,854 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-09-30 10:48:57,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 10:48:57,854 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-09-30 10:48:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:48:57,855 INFO L225 Difference]: With dead ends: 217 [2018-09-30 10:48:57,855 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 10:48:57,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:48:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 10:48:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 10:48:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 10:48:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-09-30 10:48:57,861 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-09-30 10:48:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:48:57,861 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-09-30 10:48:57,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 10:48:57,861 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-09-30 10:48:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 10:48:57,862 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:48:57,862 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:48:57,862 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:48:57,862 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:48:57,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-09-30 10:48:57,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:48:57,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:48:57,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:57,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:48:57,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:48:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:48:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:58,502 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:48:58,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:48:58,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:48:58,639 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:48:58,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:48:58,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:48:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:48:58,989 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:48:58,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 10:48:58,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 10:48:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 10:48:58,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:48:58,991 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-09-30 10:49:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:00,278 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-09-30 10:49:00,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 10:49:00,278 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-09-30 10:49:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:00,279 INFO L225 Difference]: With dead ends: 219 [2018-09-30 10:49:00,279 INFO L226 Difference]: Without dead ends: 205 [2018-09-30 10:49:00,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-30 10:49:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-30 10:49:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-30 10:49:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-09-30 10:49:00,285 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-09-30 10:49:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:00,285 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-09-30 10:49:00,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 10:49:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-09-30 10:49:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-30 10:49:00,286 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:00,287 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:00,287 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:00,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:00,287 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-09-30 10:49:00,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:00,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:00,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:00,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:00,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:00,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:00,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:00,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:49:01,278 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-09-30 10:49:01,279 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:01,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:01,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:01,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 10:49:01,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 10:49:01,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 10:49:01,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:01,630 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-09-30 10:49:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:02,594 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-09-30 10:49:02,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 10:49:02,595 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-09-30 10:49:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:02,596 INFO L225 Difference]: With dead ends: 221 [2018-09-30 10:49:02,596 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 10:49:02,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 10:49:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 10:49:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 10:49:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-09-30 10:49:02,604 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-09-30 10:49:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:02,604 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-09-30 10:49:02,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 10:49:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-09-30 10:49:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 10:49:02,605 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:02,605 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:02,606 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:02,606 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-09-30 10:49:02,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:02,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:02,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:03,289 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:03,289 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:03,297 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:49:03,435 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:49:03,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:03,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:03,798 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:03,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 10:49:03,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 10:49:03,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 10:49:03,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:03,800 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-09-30 10:49:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:05,194 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-09-30 10:49:05,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 10:49:05,195 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-09-30 10:49:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:05,196 INFO L225 Difference]: With dead ends: 223 [2018-09-30 10:49:05,196 INFO L226 Difference]: Without dead ends: 209 [2018-09-30 10:49:05,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-30 10:49:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-30 10:49:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 10:49:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-09-30 10:49:05,202 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-09-30 10:49:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:05,202 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-09-30 10:49:05,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 10:49:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-09-30 10:49:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 10:49:05,203 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:05,203 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:05,203 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:05,203 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:05,204 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-09-30 10:49:05,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:05,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:05,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:05,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:05,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:05,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:05,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:05,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:49:06,257 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-09-30 10:49:06,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:06,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:06,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:06,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 10:49:06,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 10:49:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 10:49:06,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:06,744 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-09-30 10:49:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:07,739 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-09-30 10:49:07,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 10:49:07,739 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-09-30 10:49:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:07,740 INFO L225 Difference]: With dead ends: 225 [2018-09-30 10:49:07,740 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 10:49:07,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:07,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 10:49:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 10:49:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 10:49:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-09-30 10:49:07,746 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-09-30 10:49:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:07,746 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-09-30 10:49:07,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 10:49:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-09-30 10:49:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 10:49:07,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:07,747 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:07,747 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:07,747 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-09-30 10:49:07,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:07,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:07,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:07,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:07,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:08,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:08,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:08,450 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:49:08,761 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-09-30 10:49:08,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:08,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:09,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:09,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 10:49:09,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 10:49:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 10:49:09,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:09,115 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-09-30 10:49:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:10,354 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-09-30 10:49:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 10:49:10,354 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-09-30 10:49:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:10,355 INFO L225 Difference]: With dead ends: 227 [2018-09-30 10:49:10,355 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 10:49:10,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 10:49:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-30 10:49:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-30 10:49:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-09-30 10:49:10,360 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-09-30 10:49:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:10,360 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-09-30 10:49:10,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 10:49:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-09-30 10:49:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-30 10:49:10,361 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:10,361 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:10,362 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:10,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-09-30 10:49:10,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:10,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:10,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:10,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:10,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:11,075 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:11,075 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:11,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:11,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:11,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:11,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 10:49:11,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 10:49:11,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 10:49:11,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:11,748 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-09-30 10:49:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:12,806 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-09-30 10:49:12,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 10:49:12,807 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-09-30 10:49:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:12,808 INFO L225 Difference]: With dead ends: 229 [2018-09-30 10:49:12,808 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 10:49:12,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 10:49:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 10:49:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 10:49:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-09-30 10:49:12,817 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-09-30 10:49:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:12,817 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-09-30 10:49:12,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 10:49:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-09-30 10:49:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 10:49:12,818 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:12,818 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:12,818 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:12,818 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:12,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-09-30 10:49:12,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:12,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:12,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:12,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:12,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:13,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:13,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:13,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:49:13,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:49:13,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:13,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:14,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:14,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 10:49:14,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 10:49:14,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 10:49:14,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:14,091 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-09-30 10:49:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:15,469 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-09-30 10:49:15,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 10:49:15,470 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-09-30 10:49:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:15,471 INFO L225 Difference]: With dead ends: 231 [2018-09-30 10:49:15,471 INFO L226 Difference]: Without dead ends: 217 [2018-09-30 10:49:15,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:15,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-30 10:49:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-30 10:49:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-30 10:49:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-09-30 10:49:15,480 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-09-30 10:49:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:15,480 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-09-30 10:49:15,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 10:49:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-09-30 10:49:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-30 10:49:15,481 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:15,481 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:15,482 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:15,482 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:15,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-09-30 10:49:15,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:15,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:15,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:15,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:15,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:16,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:16,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:16,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:49:16,864 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-09-30 10:49:16,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:16,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:17,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:17,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 10:49:17,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 10:49:17,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 10:49:17,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:17,235 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-09-30 10:49:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:18,343 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-09-30 10:49:18,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 10:49:18,344 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-09-30 10:49:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:18,345 INFO L225 Difference]: With dead ends: 233 [2018-09-30 10:49:18,345 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 10:49:18,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 10:49:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 10:49:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 10:49:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-09-30 10:49:18,353 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-09-30 10:49:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:18,353 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-09-30 10:49:18,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 10:49:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-09-30 10:49:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 10:49:18,354 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:18,355 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:18,355 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:18,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-09-30 10:49:18,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:18,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:18,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:19,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:19,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:19,180 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:49:19,321 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:49:19,321 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:19,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:19,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:19,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 10:49:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 10:49:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 10:49:19,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:19,799 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-09-30 10:49:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:21,222 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-09-30 10:49:21,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 10:49:21,222 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-09-30 10:49:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:21,222 INFO L225 Difference]: With dead ends: 235 [2018-09-30 10:49:21,222 INFO L226 Difference]: Without dead ends: 221 [2018-09-30 10:49:21,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-30 10:49:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-09-30 10:49:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-30 10:49:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-09-30 10:49:21,228 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-09-30 10:49:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:21,229 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-09-30 10:49:21,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 10:49:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-09-30 10:49:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-30 10:49:21,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:21,230 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:21,230 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:21,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-09-30 10:49:21,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:21,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:21,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:21,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:21,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:22,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:22,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:22,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:49:22,646 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-09-30 10:49:22,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:22,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:23,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:23,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 10:49:23,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 10:49:23,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 10:49:23,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:23,022 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-09-30 10:49:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:24,418 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-09-30 10:49:24,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 10:49:24,418 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-09-30 10:49:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:24,419 INFO L225 Difference]: With dead ends: 237 [2018-09-30 10:49:24,419 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 10:49:24,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 10:49:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 10:49:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 10:49:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-09-30 10:49:24,428 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-09-30 10:49:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:24,428 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-09-30 10:49:24,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 10:49:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-09-30 10:49:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 10:49:24,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:24,429 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:24,430 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:24,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-09-30 10:49:24,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:24,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:24,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:24,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:24,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:25,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:25,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:25,245 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:49:25,606 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-09-30 10:49:25,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:25,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:25,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:25,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 10:49:25,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 10:49:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 10:49:25,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:25,988 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-09-30 10:49:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:27,502 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-09-30 10:49:27,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 10:49:27,502 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-09-30 10:49:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:27,503 INFO L225 Difference]: With dead ends: 239 [2018-09-30 10:49:27,503 INFO L226 Difference]: Without dead ends: 225 [2018-09-30 10:49:27,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-09-30 10:49:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-09-30 10:49:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-09-30 10:49:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-09-30 10:49:27,510 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-09-30 10:49:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:27,510 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-09-30 10:49:27,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 10:49:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-09-30 10:49:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-30 10:49:27,511 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:27,511 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:27,511 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:27,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-09-30 10:49:27,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:27,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:27,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:27,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:27,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:28,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:28,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:28,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:28,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:28,999 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:28,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 10:49:28,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 10:49:29,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 10:49:29,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:29,001 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-09-30 10:49:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:30,393 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-09-30 10:49:30,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 10:49:30,393 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-09-30 10:49:30,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:30,393 INFO L225 Difference]: With dead ends: 241 [2018-09-30 10:49:30,394 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 10:49:30,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 10:49:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 10:49:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 10:49:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-09-30 10:49:30,402 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-09-30 10:49:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:30,402 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-09-30 10:49:30,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 10:49:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-09-30 10:49:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 10:49:30,403 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:30,404 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:30,404 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:30,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-09-30 10:49:30,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:30,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:30,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:30,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:30,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:31,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:31,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:31,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:49:31,403 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:49:31,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:31,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:31,901 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:31,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 10:49:31,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 10:49:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 10:49:31,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:31,903 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-09-30 10:49:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:33,261 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-09-30 10:49:33,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 10:49:33,261 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-09-30 10:49:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:33,262 INFO L225 Difference]: With dead ends: 243 [2018-09-30 10:49:33,262 INFO L226 Difference]: Without dead ends: 229 [2018-09-30 10:49:33,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-09-30 10:49:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-09-30 10:49:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 10:49:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-09-30 10:49:33,270 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-09-30 10:49:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:33,271 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-09-30 10:49:33,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 10:49:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-09-30 10:49:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 10:49:33,272 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:33,272 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:33,272 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:33,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-09-30 10:49:33,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:33,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:33,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:33,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:33,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:34,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:34,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:34,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:49:34,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-09-30 10:49:34,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:34,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:34,874 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:34,874 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 10:49:34,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 10:49:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 10:49:34,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:34,876 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-09-30 10:49:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:36,138 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-09-30 10:49:36,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 10:49:36,138 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-09-30 10:49:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:36,138 INFO L225 Difference]: With dead ends: 245 [2018-09-30 10:49:36,138 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 10:49:36,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 10:49:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 10:49:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 10:49:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-09-30 10:49:36,145 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-09-30 10:49:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:36,145 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-09-30 10:49:36,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 10:49:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-09-30 10:49:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 10:49:36,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:36,146 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:36,146 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:36,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-09-30 10:49:36,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:36,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:36,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:36,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:36,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:37,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:37,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:37,096 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:49:37,248 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:49:37,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:37,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:37,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:37,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 10:49:37,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 10:49:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 10:49:37,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:37,667 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-09-30 10:49:39,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:39,160 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-09-30 10:49:39,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 10:49:39,160 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-09-30 10:49:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:39,161 INFO L225 Difference]: With dead ends: 247 [2018-09-30 10:49:39,161 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 10:49:39,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 10:49:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-09-30 10:49:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-09-30 10:49:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-09-30 10:49:39,167 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-09-30 10:49:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:39,167 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-09-30 10:49:39,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 10:49:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-09-30 10:49:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-30 10:49:39,168 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:39,168 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:39,168 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:39,168 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-09-30 10:49:39,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:39,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:39,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:39,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:39,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:40,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:40,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:40,007 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:49:40,397 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-09-30 10:49:40,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:40,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:40,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:40,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 10:49:40,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 10:49:40,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 10:49:40,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:40,801 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-09-30 10:49:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:42,530 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-09-30 10:49:42,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 10:49:42,530 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-09-30 10:49:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:42,531 INFO L225 Difference]: With dead ends: 249 [2018-09-30 10:49:42,531 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 10:49:42,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 10:49:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 10:49:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 10:49:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-09-30 10:49:42,536 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-09-30 10:49:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:42,537 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-09-30 10:49:42,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 10:49:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-09-30 10:49:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 10:49:42,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:42,537 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:42,538 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:42,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-09-30 10:49:42,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:42,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:42,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:42,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:42,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:43,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:43,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:43,381 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:49:43,799 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-09-30 10:49:43,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:43,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:44,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:44,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 10:49:44,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 10:49:44,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 10:49:44,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:44,211 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-09-30 10:49:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:45,803 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-09-30 10:49:45,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 10:49:45,803 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-09-30 10:49:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:45,804 INFO L225 Difference]: With dead ends: 251 [2018-09-30 10:49:45,804 INFO L226 Difference]: Without dead ends: 237 [2018-09-30 10:49:45,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-09-30 10:49:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-09-30 10:49:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-09-30 10:49:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-09-30 10:49:45,810 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-09-30 10:49:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:45,811 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-09-30 10:49:45,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 10:49:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-09-30 10:49:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-30 10:49:45,811 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:45,811 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:45,812 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:45,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-09-30 10:49:45,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:45,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:45,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:45,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:45,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:46,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:46,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:46,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:46,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:47,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:47,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 10:49:47,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 10:49:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 10:49:47,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:47,535 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-09-30 10:49:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:49,040 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-09-30 10:49:49,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 10:49:49,040 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-09-30 10:49:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:49,041 INFO L225 Difference]: With dead ends: 253 [2018-09-30 10:49:49,041 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 10:49:49,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 10:49:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 10:49:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 10:49:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-09-30 10:49:49,050 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-09-30 10:49:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:49,050 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-09-30 10:49:49,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 10:49:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-09-30 10:49:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 10:49:49,051 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:49,051 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:49,052 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:49,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:49,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-09-30 10:49:49,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:49,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:49,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:49,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:49:49,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:49,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:49,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:49,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:49:50,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:49:50,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:50,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:50,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:50,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 10:49:50,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 10:49:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 10:49:50,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:50,550 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-09-30 10:49:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:52,633 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-09-30 10:49:52,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 10:49:52,633 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-09-30 10:49:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:52,634 INFO L225 Difference]: With dead ends: 255 [2018-09-30 10:49:52,634 INFO L226 Difference]: Without dead ends: 241 [2018-09-30 10:49:52,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-09-30 10:49:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-09-30 10:49:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-09-30 10:49:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-09-30 10:49:52,640 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-09-30 10:49:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:52,640 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-09-30 10:49:52,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 10:49:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-09-30 10:49:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-30 10:49:52,641 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:52,641 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:52,641 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:52,641 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-09-30 10:49:52,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:52,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:52,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:53,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:53,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:53,511 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:49:53,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-09-30 10:49:53,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:53,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:54,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:54,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 10:49:54,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 10:49:54,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 10:49:54,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:54,353 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-09-30 10:49:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:56,110 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-09-30 10:49:56,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 10:49:56,111 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-09-30 10:49:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:56,111 INFO L225 Difference]: With dead ends: 257 [2018-09-30 10:49:56,111 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 10:49:56,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 10:49:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 10:49:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 10:49:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-09-30 10:49:56,118 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-09-30 10:49:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:56,118 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-09-30 10:49:56,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 10:49:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-09-30 10:49:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 10:49:56,119 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:56,119 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:56,119 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:56,119 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-09-30 10:49:56,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:56,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:56,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:56,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:56,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:49:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:57,023 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:49:57,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:49:57,031 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:49:57,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:49:57,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:49:57,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:49:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:49:58,033 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:49:58,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 10:49:58,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 10:49:58,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 10:49:58,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:49:58,035 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-09-30 10:49:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:49:59,777 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-09-30 10:49:59,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 10:49:59,777 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-09-30 10:49:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:49:59,778 INFO L225 Difference]: With dead ends: 259 [2018-09-30 10:49:59,778 INFO L226 Difference]: Without dead ends: 245 [2018-09-30 10:49:59,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:49:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-09-30 10:49:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-09-30 10:49:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-30 10:49:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-09-30 10:49:59,784 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-09-30 10:49:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:49:59,785 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-09-30 10:49:59,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 10:49:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-09-30 10:49:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-30 10:49:59,785 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:49:59,785 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:49:59,786 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:49:59,786 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:49:59,786 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-09-30 10:49:59,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:49:59,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:49:59,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:59,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:49:59,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:49:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:00,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:00,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:00,702 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:50:01,114 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-09-30 10:50:01,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:01,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:01,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:01,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 10:50:01,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 10:50:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 10:50:01,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:01,524 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 117 states. [2018-09-30 10:50:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:03,456 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-09-30 10:50:03,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 10:50:03,456 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 244 [2018-09-30 10:50:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:03,456 INFO L225 Difference]: With dead ends: 261 [2018-09-30 10:50:03,457 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 10:50:03,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 10:50:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 10:50:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 10:50:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-09-30 10:50:03,462 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 244 [2018-09-30 10:50:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:03,462 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-09-30 10:50:03,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 10:50:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-09-30 10:50:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 10:50:03,463 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:03,463 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:03,463 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:03,463 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1996536584, now seen corresponding path program 114 times [2018-09-30 10:50:03,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:03,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:03,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:03,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:03,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:04,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:04,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:04,418 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:50:04,852 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 116 check-sat command(s) [2018-09-30 10:50:04,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:04,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:05,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:05,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 10:50:05,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 10:50:05,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 10:50:05,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:05,297 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 118 states. [2018-09-30 10:50:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:07,175 INFO L93 Difference]: Finished difference Result 263 states and 267 transitions. [2018-09-30 10:50:07,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 10:50:07,175 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 246 [2018-09-30 10:50:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:07,176 INFO L225 Difference]: With dead ends: 263 [2018-09-30 10:50:07,176 INFO L226 Difference]: Without dead ends: 249 [2018-09-30 10:50:07,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-09-30 10:50:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-09-30 10:50:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 10:50:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-09-30 10:50:07,183 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 246 [2018-09-30 10:50:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:07,183 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-09-30 10:50:07,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 10:50:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-09-30 10:50:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 10:50:07,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:07,184 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:07,185 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:07,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash 428110084, now seen corresponding path program 115 times [2018-09-30 10:50:07,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:07,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:07,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:07,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:07,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:08,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:08,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:08,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:50:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:08,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:09,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:09,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 10:50:09,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 10:50:09,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 10:50:09,185 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:09,185 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 119 states. [2018-09-30 10:50:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:10,928 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-09-30 10:50:10,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 10:50:10,928 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 248 [2018-09-30 10:50:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:10,929 INFO L225 Difference]: With dead ends: 265 [2018-09-30 10:50:10,929 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 10:50:10,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 10:50:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 10:50:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 10:50:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-09-30 10:50:10,935 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 248 [2018-09-30 10:50:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:10,935 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-09-30 10:50:10,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 10:50:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-09-30 10:50:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 10:50:10,936 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:10,936 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:10,936 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:10,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash 703764480, now seen corresponding path program 116 times [2018-09-30 10:50:10,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:10,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:10,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:10,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:50:10,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:11,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:11,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:11,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:50:12,088 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:50:12,089 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:12,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:12,514 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:12,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 10:50:12,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 10:50:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 10:50:12,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:12,517 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 120 states. [2018-09-30 10:50:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:14,079 INFO L93 Difference]: Finished difference Result 267 states and 271 transitions. [2018-09-30 10:50:14,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 10:50:14,079 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 250 [2018-09-30 10:50:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:14,080 INFO L225 Difference]: With dead ends: 267 [2018-09-30 10:50:14,080 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 10:50:14,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 10:50:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-09-30 10:50:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-09-30 10:50:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-09-30 10:50:14,086 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 250 [2018-09-30 10:50:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:14,086 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-09-30 10:50:14,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 10:50:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-09-30 10:50:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-30 10:50:14,086 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:14,087 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:14,087 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:14,087 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash -680333316, now seen corresponding path program 117 times [2018-09-30 10:50:14,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:14,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:14,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:14,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:14,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:15,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:15,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:15,049 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:50:15,522 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 119 check-sat command(s) [2018-09-30 10:50:15,522 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:15,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:15,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:15,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 10:50:15,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 10:50:15,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 10:50:15,955 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:15,955 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand 121 states. [2018-09-30 10:50:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:17,670 INFO L93 Difference]: Finished difference Result 269 states and 273 transitions. [2018-09-30 10:50:17,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 10:50:17,671 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 252 [2018-09-30 10:50:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:17,671 INFO L225 Difference]: With dead ends: 269 [2018-09-30 10:50:17,671 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 10:50:17,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 10:50:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 10:50:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 10:50:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-09-30 10:50:17,677 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 252 [2018-09-30 10:50:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:17,677 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-09-30 10:50:17,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 10:50:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-09-30 10:50:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 10:50:17,678 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:17,678 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:17,678 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:17,678 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash 641546488, now seen corresponding path program 118 times [2018-09-30 10:50:17,679 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:17,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:17,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:17,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:17,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:18,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:18,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:18,855 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:50:19,028 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:50:19,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:19,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:19,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:19,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 10:50:19,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 10:50:19,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 10:50:19,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:19,483 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 122 states. [2018-09-30 10:50:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:21,571 INFO L93 Difference]: Finished difference Result 271 states and 275 transitions. [2018-09-30 10:50:21,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 10:50:21,571 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 254 [2018-09-30 10:50:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:21,572 INFO L225 Difference]: With dead ends: 271 [2018-09-30 10:50:21,572 INFO L226 Difference]: Without dead ends: 257 [2018-09-30 10:50:21,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-09-30 10:50:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-09-30 10:50:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-09-30 10:50:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2018-09-30 10:50:21,580 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 254 [2018-09-30 10:50:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:21,580 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2018-09-30 10:50:21,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 10:50:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2018-09-30 10:50:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-30 10:50:21,581 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:21,581 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:21,581 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:21,581 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:21,581 INFO L82 PathProgramCache]: Analyzing trace with hash -342281484, now seen corresponding path program 119 times [2018-09-30 10:50:21,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:21,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:21,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:21,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:21,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:22,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:22,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:22,578 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:50:23,036 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-09-30 10:50:23,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:23,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:23,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:23,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 10:50:23,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 10:50:23,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 10:50:23,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:23,596 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand 123 states. [2018-09-30 10:50:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:25,718 INFO L93 Difference]: Finished difference Result 273 states and 277 transitions. [2018-09-30 10:50:25,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 10:50:25,718 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 256 [2018-09-30 10:50:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:25,719 INFO L225 Difference]: With dead ends: 273 [2018-09-30 10:50:25,719 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 10:50:25,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 10:50:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 10:50:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 10:50:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2018-09-30 10:50:25,725 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 256 [2018-09-30 10:50:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:25,726 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 261 transitions. [2018-09-30 10:50:25,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 10:50:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 261 transitions. [2018-09-30 10:50:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 10:50:25,727 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:25,727 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:25,727 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:25,727 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash -908157456, now seen corresponding path program 120 times [2018-09-30 10:50:25,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:25,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:25,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:25,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:25,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:26,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:26,773 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:26,780 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:50:27,261 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 122 check-sat command(s) [2018-09-30 10:50:27,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:27,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:27,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:27,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 10:50:27,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 10:50:27,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 10:50:27,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:27,738 INFO L87 Difference]: Start difference. First operand 259 states and 261 transitions. Second operand 124 states. [2018-09-30 10:50:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:29,598 INFO L93 Difference]: Finished difference Result 275 states and 279 transitions. [2018-09-30 10:50:29,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 10:50:29,599 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 258 [2018-09-30 10:50:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:29,599 INFO L225 Difference]: With dead ends: 275 [2018-09-30 10:50:29,599 INFO L226 Difference]: Without dead ends: 261 [2018-09-30 10:50:29,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-09-30 10:50:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-09-30 10:50:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-09-30 10:50:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2018-09-30 10:50:29,605 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 258 [2018-09-30 10:50:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:29,605 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2018-09-30 10:50:29,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 10:50:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2018-09-30 10:50:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-30 10:50:29,606 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:29,606 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:29,606 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:29,606 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 745880044, now seen corresponding path program 121 times [2018-09-30 10:50:29,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:29,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:29,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:29,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:29,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:30,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:30,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:30,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:50:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:30,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:31,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:31,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-30 10:50:31,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 10:50:31,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 10:50:31,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:31,334 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand 125 states. [2018-09-30 10:50:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:33,077 INFO L93 Difference]: Finished difference Result 277 states and 281 transitions. [2018-09-30 10:50:33,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 10:50:33,078 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 260 [2018-09-30 10:50:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:33,079 INFO L225 Difference]: With dead ends: 277 [2018-09-30 10:50:33,079 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 10:50:33,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 10:50:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 10:50:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 10:50:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 265 transitions. [2018-09-30 10:50:33,087 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 265 transitions. Word has length 260 [2018-09-30 10:50:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:33,087 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 265 transitions. [2018-09-30 10:50:33,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 10:50:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 265 transitions. [2018-09-30 10:50:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 10:50:33,088 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:33,088 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:33,088 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:33,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1138018024, now seen corresponding path program 122 times [2018-09-30 10:50:33,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:33,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:33,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:33,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:50:33,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:34,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:34,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:34,262 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:50:34,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:50:34,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:34,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:34,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:34,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-30 10:50:34,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 10:50:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 10:50:34,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:34,920 INFO L87 Difference]: Start difference. First operand 263 states and 265 transitions. Second operand 126 states. [2018-09-30 10:50:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:37,074 INFO L93 Difference]: Finished difference Result 279 states and 283 transitions. [2018-09-30 10:50:37,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-30 10:50:37,074 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 262 [2018-09-30 10:50:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:37,075 INFO L225 Difference]: With dead ends: 279 [2018-09-30 10:50:37,075 INFO L226 Difference]: Without dead ends: 265 [2018-09-30 10:50:37,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-09-30 10:50:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-09-30 10:50:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-09-30 10:50:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-09-30 10:50:37,082 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 262 [2018-09-30 10:50:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:37,082 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-09-30 10:50:37,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 10:50:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-09-30 10:50:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-09-30 10:50:37,083 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:37,083 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:37,083 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:37,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash 25494756, now seen corresponding path program 123 times [2018-09-30 10:50:37,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:37,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:37,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:37,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:37,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:38,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:38,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:38,138 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:50:38,680 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 125 check-sat command(s) [2018-09-30 10:50:38,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:38,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:39,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:39,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-30 10:50:39,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-30 10:50:39,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-30 10:50:39,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:39,165 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 127 states. [2018-09-30 10:50:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:41,331 INFO L93 Difference]: Finished difference Result 281 states and 285 transitions. [2018-09-30 10:50:41,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 10:50:41,331 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 264 [2018-09-30 10:50:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:41,332 INFO L225 Difference]: With dead ends: 281 [2018-09-30 10:50:41,332 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 10:50:41,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 10:50:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 10:50:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 10:50:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 269 transitions. [2018-09-30 10:50:41,339 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 269 transitions. Word has length 264 [2018-09-30 10:50:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:41,339 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 269 transitions. [2018-09-30 10:50:41,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-30 10:50:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 269 transitions. [2018-09-30 10:50:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 10:50:41,340 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:41,340 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:41,340 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:41,340 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:41,340 INFO L82 PathProgramCache]: Analyzing trace with hash 337490912, now seen corresponding path program 124 times [2018-09-30 10:50:41,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:41,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:41,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:41,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:41,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:42,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:42,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:42,420 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:50:42,588 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:50:42,589 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:42,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:43,067 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:43,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-30 10:50:43,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 10:50:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 10:50:43,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:43,070 INFO L87 Difference]: Start difference. First operand 267 states and 269 transitions. Second operand 128 states. [2018-09-30 10:50:45,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:45,070 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-09-30 10:50:45,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 10:50:45,070 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 266 [2018-09-30 10:50:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:45,071 INFO L225 Difference]: With dead ends: 283 [2018-09-30 10:50:45,071 INFO L226 Difference]: Without dead ends: 269 [2018-09-30 10:50:45,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-09-30 10:50:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-09-30 10:50:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-30 10:50:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 271 transitions. [2018-09-30 10:50:45,079 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 271 transitions. Word has length 266 [2018-09-30 10:50:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:45,080 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 271 transitions. [2018-09-30 10:50:45,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 10:50:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 271 transitions. [2018-09-30 10:50:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-30 10:50:45,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:45,081 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:45,081 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:45,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash -481913892, now seen corresponding path program 125 times [2018-09-30 10:50:45,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:45,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:45,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:45,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:45,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:46,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:46,192 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:46,203 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:50:46,706 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-09-30 10:50:46,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:46,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:47,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:47,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-30 10:50:47,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-30 10:50:47,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-30 10:50:47,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:47,181 INFO L87 Difference]: Start difference. First operand 269 states and 271 transitions. Second operand 129 states. [2018-09-30 10:50:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:50:49,500 INFO L93 Difference]: Finished difference Result 285 states and 289 transitions. [2018-09-30 10:50:49,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 10:50:49,501 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 268 [2018-09-30 10:50:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:50:49,502 INFO L225 Difference]: With dead ends: 285 [2018-09-30 10:50:49,502 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 10:50:49,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:50:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 10:50:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 10:50:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 10:50:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-09-30 10:50:49,509 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 268 [2018-09-30 10:50:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:50:49,509 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-09-30 10:50:49,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-30 10:50:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-09-30 10:50:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 10:50:49,510 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:50:49,510 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 10:50:49,510 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:50:49,510 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:50:49,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1950915368, now seen corresponding path program 126 times [2018-09-30 10:50:49,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:50:49,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:50:49,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:49,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:50:49,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:50:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:50:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:50,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:50:50,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:50:50,696 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:50:51,220 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 128 check-sat command(s) [2018-09-30 10:50:51,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:50:51,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:50:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 10:50:51,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:50:51,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-30 10:50:51,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 10:50:51,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 10:50:51,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:50:51,717 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 130 states. Received shutdown request... [2018-09-30 10:50:53,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 10:50:53,645 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:50:53,651 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:50:53,651 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:50:53 BoogieIcfgContainer [2018-09-30 10:50:53,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:50:53,652 INFO L168 Benchmark]: Toolchain (without parser) took 245632.85 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 133.4 MB). Peak memory consumption was 576.9 MB. Max. memory is 7.1 GB. [2018-09-30 10:50:53,654 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:50:53,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:50:53,655 INFO L168 Benchmark]: Boogie Preprocessor took 21.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:50:53,655 INFO L168 Benchmark]: RCFGBuilder took 366.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:50:53,656 INFO L168 Benchmark]: TraceAbstraction took 245198.88 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Peak memory consumption was 555.8 MB. Max. memory is 7.1 GB. [2018-09-30 10:50:53,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 366.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245198.88 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Peak memory consumption was 555.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was constructing difference of abstraction (271states) and FLOYD_HOARE automaton (currently 129 states, 130 states before enhancement), while ReachableStatesComputation was computing reachable states (254 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 245.1s OverallTime, 130 OverallIterations, 128 TraceHistogramMax, 108.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1163 SDtfs, 31 SDslu, 28999 SDs, 0 SdLazy, 16691 SolverSat, 274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26545 GetRequests, 18283 SyntacticMatches, 0 SemanticMatches, 8262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=129, 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: 0.7s AutomataMinimizationTime, 129 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.2s SsaConstructionTime, 23.0s SatisfiabilityAnalysisTime, 103.6s InterpolantComputationTime, 36587 NumberOfCodeBlocks, 36587 NumberOfCodeBlocksAsserted, 4436 NumberOfCheckSat, 36330 ConstructedInterpolants, 0 QuantifiedInterpolants, 18734124 SizeOfPredicates, 127 NumberOfNonLiveVariables, 89496 ConjunctsInSsa, 8382 ConjunctsInUnsatCore, 257 InterpolantComputations, 3 PerfectInterpolantSequences, 4548/1402564 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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-50-53-668.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-50-53-668.csv Completed graceful shutdown