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/down.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:07:20,802 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:07:20,805 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:07:20,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:07:20,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:07:20,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:07:20,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:07:20,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:07:20,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:07:20,838 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:07:20,839 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:07:20,878 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:07:20,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:07:20,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:07:20,896 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:07:20,896 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:07:20,897 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:07:20,897 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:07:20,897 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:07:20,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:07:20,898 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:07:20,898 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:07:20,898 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:07:20,899 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:07:20,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:07:20,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:07:20,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:07:20,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:07:20,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:07:20,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:07:20,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:07:20,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:07:20,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:07:20,902 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:07:20,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:07:20,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:07:20,902 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:07:20,902 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:07:20,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:07:20,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:07:20,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:07:20,971 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:07:20,971 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:07:20,972 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-02 12:07:20,972 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-02 12:07:21,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:07:21,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:07:21,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:07:21,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:07:21,041 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:07:21,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:07:21,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:07:21,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:07:21,083 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:07:21,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... [2018-10-02 12:07:21,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:07:21,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:07:21,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:07:21,109 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:07:21,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:07:21,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-02 12:07:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:07:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:07:21,471 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:07:21,471 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:07:21 BoogieIcfgContainer [2018-10-02 12:07:21,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:07:21,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:07:21,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:07:21,476 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:07:21,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:21" (1/2) ... [2018-10-02 12:07:21,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad5c15 and model type down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:07:21, skipping insertion in model container [2018-10-02 12:07:21,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:07:21" (2/2) ... [2018-10-02 12:07:21,479 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-02 12:07:21,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:07:21,498 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:07:21,550 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:07:21,550 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:07:21,551 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:07:21,551 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:07:21,551 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:07:21,551 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:07:21,551 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:07:21,552 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:07:21,552 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:07:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-02 12:07:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:07:21,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:21,575 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:21,577 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:21,585 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:21,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1951930377, now seen corresponding path program 1 times [2018-10-02 12:07:21,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:21,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:21,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:21,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:07:21,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:07:21,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:07:21,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:21,763 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-02 12:07:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:22,020 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-10-02 12:07:22,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:07:22,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-02 12:07:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:22,035 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:07:22,035 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:07:22,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:07:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-10-02 12:07:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:07:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-10-02 12:07:22,071 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2018-10-02 12:07:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:22,071 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-10-02 12:07:22,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:07:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2018-10-02 12:07:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:07:22,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:22,073 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:22,073 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:22,073 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1951989959, now seen corresponding path program 1 times [2018-10-02 12:07:22,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:22,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:22,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:22,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:22,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:22,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-02 12:07:22,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:07:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:07:22,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:22,138 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand 4 states. [2018-10-02 12:07:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:22,259 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2018-10-02 12:07:22,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:07:22,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-02 12:07:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:22,261 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:07:22,261 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:07:22,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:07:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:07:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:07:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-10-02 12:07:22,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2018-10-02 12:07:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:22,268 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-02 12:07:22,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:07:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2018-10-02 12:07:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:07:22,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:22,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:22,270 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:22,270 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1455783312, now seen corresponding path program 1 times [2018-10-02 12:07:22,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:22,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:22,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:22,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-02 12:07:22,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:22,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-02 12:07:22,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:07:22,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:07:22,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:22,334 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2018-10-02 12:07:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:22,728 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-10-02 12:07:22,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:07:22,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-02 12:07:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:22,729 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:07:22,729 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:07:22,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:07:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-10-02 12:07:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:07:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-02 12:07:22,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-10-02 12:07:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:22,735 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-02 12:07:22,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:07:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-02 12:07:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:07:22,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:22,736 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:22,737 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:22,737 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:22,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1455723730, now seen corresponding path program 1 times [2018-10-02 12:07:22,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:22,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:22,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:22,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:22,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:22,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-02 12:07:22,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:07:22,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:07:22,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:22,803 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2018-10-02 12:07:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:22,984 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-10-02 12:07:22,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:07:22,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-02 12:07:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:22,986 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:07:22,987 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:07:22,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:07:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-02 12:07:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:07:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-10-02 12:07:22,993 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2018-10-02 12:07:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:22,994 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-10-02 12:07:22,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:07:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-10-02 12:07:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:07:22,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:22,995 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:22,995 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:22,996 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1394403420, now seen corresponding path program 1 times [2018-10-02 12:07:22,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:22,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:22,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:22,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:22,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:23,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:23,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:23,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:23,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:23,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:23,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:07:23,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:07:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:07:23,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:23,270 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2018-10-02 12:07:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:23,444 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-10-02 12:07:23,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:07:23,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-10-02 12:07:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:23,454 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:07:23,454 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:07:23,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:07:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-02 12:07:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:07:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-02 12:07:23,462 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-10-02 12:07:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:23,465 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-02 12:07:23,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:07:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-02 12:07:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:07:23,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:23,466 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:23,466 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:23,466 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:23,467 INFO L82 PathProgramCache]: Analyzing trace with hash -961145443, now seen corresponding path program 2 times [2018-10-02 12:07:23,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:23,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:23,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:23,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:23,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:23,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:23,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:23,581 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:23,618 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:23,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:23,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:23,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:23,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:07:23,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:07:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:07:23,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:23,972 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-10-02 12:07:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:24,248 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-02 12:07:24,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:07:24,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-02 12:07:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:24,252 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:07:24,252 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:07:24,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:07:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:07:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-02 12:07:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:07:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-02 12:07:24,264 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2018-10-02 12:07:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:24,264 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-02 12:07:24,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:07:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-02 12:07:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:07:24,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:24,267 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2018-10-02 12:07:24,268 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:24,268 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:24,268 INFO L82 PathProgramCache]: Analyzing trace with hash -552275309, now seen corresponding path program 3 times [2018-10-02 12:07:24,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:24,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:24,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:24,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:24,457 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:24,469 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:24,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 12:07:24,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:24,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:24,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:07:24,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:07:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:07:24,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:24,550 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-10-02 12:07:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:24,819 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-10-02 12:07:24,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:07:24,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-02 12:07:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:24,820 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:07:24,820 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:07:24,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:07:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:07:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:07:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:07:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-02 12:07:24,826 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2018-10-02 12:07:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:24,826 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-02 12:07:24,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:07:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-02 12:07:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:07:24,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:24,827 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2018-10-02 12:07:24,828 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:24,828 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2071906362, now seen corresponding path program 4 times [2018-10-02 12:07:24,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:24,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:24,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:24,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:24,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:24,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:24,949 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:24,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:24,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:25,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:25,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:07:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:07:25,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:07:25,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:25,040 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2018-10-02 12:07:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,189 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-10-02 12:07:25,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:07:25,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-02 12:07:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,191 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:07:25,191 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:07:25,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:07:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-10-02 12:07:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:07:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-02 12:07:25,199 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2018-10-02 12:07:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,199 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-02 12:07:25,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:07:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-02 12:07:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:07:25,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,200 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:25,201 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,201 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash -992407888, now seen corresponding path program 5 times [2018-10-02 12:07:25,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:25,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:25,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:25,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:25,336 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:25,357 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 12:07:25,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:25,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:25,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:25,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:07:25,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:07:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:07:25,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:25,605 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-02 12:07:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,843 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-02 12:07:25,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:07:25,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-10-02 12:07:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,844 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:07:25,844 INFO L226 Difference]: Without dead ends: 26 [2018-10-02 12:07:25,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:07:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-02 12:07:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-02 12:07:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:07:25,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-02 12:07:25,851 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2018-10-02 12:07:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,851 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-02 12:07:25,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:07:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-02 12:07:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:07:25,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:25,853 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,853 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,853 INFO L82 PathProgramCache]: Analyzing trace with hash 390441321, now seen corresponding path program 6 times [2018-10-02 12:07:25,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:25,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:25,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:25,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:25,952 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:25,967 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 12:07:25,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:25,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:26,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:26,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:07:26,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:07:26,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:07:26,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:26,079 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2018-10-02 12:07:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:26,188 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-02 12:07:26,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:07:26,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-10-02 12:07:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:26,191 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:07:26,191 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:07:26,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:07:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-10-02 12:07:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:07:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-02 12:07:26,200 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-10-02 12:07:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:26,200 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-02 12:07:26,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:07:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-02 12:07:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-02 12:07:26,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:26,201 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2018-10-02 12:07:26,202 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:26,202 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1927135327, now seen corresponding path program 7 times [2018-10-02 12:07:26,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:26,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:26,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:26,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:26,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:26,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:26,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:26,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:26,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:26,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:07:26,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:07:26,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:07:26,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:26,483 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 12 states. [2018-10-02 12:07:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:26,836 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-10-02 12:07:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:07:26,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-10-02 12:07:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:26,838 INFO L225 Difference]: With dead ends: 58 [2018-10-02 12:07:26,838 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:07:26,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:07:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:07:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:07:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-02 12:07:26,845 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2018-10-02 12:07:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:26,846 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-02 12:07:26,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:07:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-02 12:07:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:07:26,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:26,847 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2018-10-02 12:07:26,847 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:26,847 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:26,848 INFO L82 PathProgramCache]: Analyzing trace with hash -906890938, now seen corresponding path program 8 times [2018-10-02 12:07:26,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:26,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:26,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:26,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:27,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:27,105 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:27,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:27,149 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:27,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:27,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:27,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:27,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:07:27,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:07:27,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:07:27,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:27,314 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2018-10-02 12:07:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:27,628 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-10-02 12:07:27,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:07:27,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-10-02 12:07:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:27,631 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:07:27,632 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:07:27,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:07:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:07:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-10-02 12:07:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:07:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-02 12:07:27,640 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2018-10-02 12:07:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:27,640 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-02 12:07:27,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:07:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-02 12:07:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:07:27,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:27,641 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1] [2018-10-02 12:07:27,642 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:27,642 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash -466038340, now seen corresponding path program 9 times [2018-10-02 12:07:27,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:27,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:27,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:27,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:27,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:27,777 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:27,881 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:07:27,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:27,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:28,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:28,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:07:28,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:07:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:07:28,145 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:28,145 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 14 states. [2018-10-02 12:07:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:28,841 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-02 12:07:28,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:07:28,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-10-02 12:07:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:28,842 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:07:28,842 INFO L226 Difference]: Without dead ends: 36 [2018-10-02 12:07:28,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:07:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-02 12:07:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-02 12:07:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-02 12:07:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-10-02 12:07:28,849 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2018-10-02 12:07:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:28,849 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-10-02 12:07:28,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:07:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-10-02 12:07:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-02 12:07:28,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:28,850 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2018-10-02 12:07:28,851 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:28,851 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1282545973, now seen corresponding path program 10 times [2018-10-02 12:07:28,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:28,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:28,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:28,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:28,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:28,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:29,006 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:29,046 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:29,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:29,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:29,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:29,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:07:29,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:07:29,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:07:29,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:29,408 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2018-10-02 12:07:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:29,557 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-10-02 12:07:29,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:07:29,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-10-02 12:07:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:29,558 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:07:29,559 INFO L226 Difference]: Without dead ends: 44 [2018-10-02 12:07:29,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime [2018-10-02 12:07:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-02 12:07:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-02 12:07:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-02 12:07:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-02 12:07:29,566 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2018-10-02 12:07:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:29,567 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-02 12:07:29,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:07:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-02 12:07:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-02 12:07:29,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:29,568 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2018-10-02 12:07:29,568 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:29,569 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1500867115, now seen corresponding path program 11 times [2018-10-02 12:07:29,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:29,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:29,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:29,759 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:29,766 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:29,825 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:07:29,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:29,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:30,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:30,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:07:30,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:07:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:07:30,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:30,176 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 16 states. [2018-10-02 12:07:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:30,790 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-10-02 12:07:30,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:07:30,791 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2018-10-02 12:07:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:30,791 INFO L225 Difference]: With dead ends: 76 [2018-10-02 12:07:30,792 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:07:30,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:07:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:07:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:07:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:07:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-02 12:07:30,799 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2018-10-02 12:07:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:30,800 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-02 12:07:30,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:07:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-02 12:07:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:07:30,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:30,801 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2018-10-02 12:07:30,801 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:30,802 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash 594208338, now seen corresponding path program 12 times [2018-10-02 12:07:30,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:30,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:30,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:30,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:30,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:30,945 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:30,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:30,980 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:07:30,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:30,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:31,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:31,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:07:31,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:07:31,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:07:31,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:31,099 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 10 states. [2018-10-02 12:07:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:31,241 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-10-02 12:07:31,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:07:31,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2018-10-02 12:07:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:31,243 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:07:31,243 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:07:31,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:07:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-10-02 12:07:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:07:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-02 12:07:31,251 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2018-10-02 12:07:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:31,251 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-02 12:07:31,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:07:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-02 12:07:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:07:31,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:31,252 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1] [2018-10-02 12:07:31,253 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:31,253 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1054367944, now seen corresponding path program 13 times [2018-10-02 12:07:31,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:31,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:31,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:31,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:31,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:31,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:31,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:31,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:31,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:31,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:31,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:07:31,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:07:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:07:31,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:31,875 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 18 states. [2018-10-02 12:07:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:32,174 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-02 12:07:32,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:07:32,175 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2018-10-02 12:07:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:32,175 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:07:32,176 INFO L226 Difference]: Without dead ends: 46 [2018-10-02 12:07:32,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:07:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-02 12:07:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-02 12:07:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-02 12:07:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-10-02 12:07:32,187 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2018-10-02 12:07:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:32,188 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-10-02 12:07:32,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:07:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-10-02 12:07:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-02 12:07:32,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:32,189 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2018-10-02 12:07:32,189 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:32,189 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:32,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1098736897, now seen corresponding path program 14 times [2018-10-02 12:07:32,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:32,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:32,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:32,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:32,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:32,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:32,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:32,349 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:32,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:32,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:32,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:32,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:07:32,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:07:32,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:07:32,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:32,540 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 11 states. [2018-10-02 12:07:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:32,819 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-10-02 12:07:32,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:07:32,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2018-10-02 12:07:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:32,820 INFO L225 Difference]: With dead ends: 60 [2018-10-02 12:07:32,820 INFO L226 Difference]: Without dead ends: 54 [2018-10-02 12:07:32,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-02 12:07:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-10-02 12:07:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-02 12:07:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-10-02 12:07:32,828 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 43 [2018-10-02 12:07:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:32,828 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-10-02 12:07:32,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:07:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-10-02 12:07:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:07:32,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:32,829 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2018-10-02 12:07:32,829 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:32,830 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -48369673, now seen corresponding path program 15 times [2018-10-02 12:07:32,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:32,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:32,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:32,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:33,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:33,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:33,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:33,637 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:07:33,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:33,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:33,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:33,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:07:33,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:07:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:07:33,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:33,758 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 20 states. [2018-10-02 12:07:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:34,510 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2018-10-02 12:07:34,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:07:34,511 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2018-10-02 12:07:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:34,511 INFO L225 Difference]: With dead ends: 94 [2018-10-02 12:07:34,512 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:07:34,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:07:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:07:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:07:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:07:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-02 12:07:34,518 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-10-02 12:07:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:34,519 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-02 12:07:34,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:07:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-02 12:07:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:07:34,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:34,520 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2018-10-02 12:07:34,520 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:34,520 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:34,520 INFO L82 PathProgramCache]: Analyzing trace with hash 239052638, now seen corresponding path program 16 times [2018-10-02 12:07:34,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:34,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:34,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:34,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:34,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:34,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:34,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:34,726 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:34,750 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:34,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:34,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:34,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:34,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:07:34,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:07:34,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:07:34,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:34,848 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 12 states. [2018-10-02 12:07:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:35,065 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-10-02 12:07:35,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:07:35,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-10-02 12:07:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:35,067 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:07:35,067 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:07:35,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:07:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-10-02 12:07:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:07:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-02 12:07:35,074 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 48 [2018-10-02 12:07:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:35,075 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-02 12:07:35,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:07:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-02 12:07:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:07:35,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:35,076 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1] [2018-10-02 12:07:35,076 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:35,076 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1074641876, now seen corresponding path program 17 times [2018-10-02 12:07:35,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:35,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:35,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:35,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:35,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:35,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:35,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:35,379 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-02 12:07:35,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:35,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:35,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:35,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:07:35,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:07:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:07:35,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:35,767 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-02 12:07:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:36,709 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-02 12:07:36,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:07:36,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2018-10-02 12:07:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:36,710 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:07:36,710 INFO L226 Difference]: Without dead ends: 56 [2018-10-02 12:07:36,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:07:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-02 12:07:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-02 12:07:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-02 12:07:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-10-02 12:07:36,716 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2018-10-02 12:07:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:36,717 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-10-02 12:07:36,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:07:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-10-02 12:07:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:07:36,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:36,718 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2018-10-02 12:07:36,718 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:36,718 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:36,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1305899827, now seen corresponding path program 18 times [2018-10-02 12:07:36,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:36,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:36,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:36,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:36,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:36,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:36,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:36,897 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:36,947 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-02 12:07:36,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:36,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:37,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:37,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:07:37,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:07:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:07:37,075 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:37,075 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 13 states. [2018-10-02 12:07:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:37,248 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2018-10-02 12:07:37,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:07:37,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-10-02 12:07:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:37,252 INFO L225 Difference]: With dead ends: 70 [2018-10-02 12:07:37,252 INFO L226 Difference]: Without dead ends: 64 [2018-10-02 12:07:37,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-02 12:07:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-10-02 12:07:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-02 12:07:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-10-02 12:07:37,259 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2018-10-02 12:07:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:37,259 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-10-02 12:07:37,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:07:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-10-02 12:07:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-02 12:07:37,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:37,260 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2018-10-02 12:07:37,260 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:37,261 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:37,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1754878403, now seen corresponding path program 19 times [2018-10-02 12:07:37,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:37,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:37,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:37,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:37,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:37,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:37,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:37,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:37,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:37,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:37,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:07:37,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:07:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:07:37,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:37,956 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2018-10-02 12:07:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:38,910 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2018-10-02 12:07:38,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:07:38,910 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2018-10-02 12:07:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:38,911 INFO L225 Difference]: With dead ends: 112 [2018-10-02 12:07:38,911 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:07:38,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:07:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:07:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:07:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:07:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-02 12:07:38,920 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 57 [2018-10-02 12:07:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:38,920 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-02 12:07:38,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:07:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-02 12:07:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:07:38,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:38,921 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2018-10-02 12:07:38,921 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:38,922 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1471794070, now seen corresponding path program 20 times [2018-10-02 12:07:38,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:38,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:38,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:38,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:38,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:39,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:39,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:39,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:39,123 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:39,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:39,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:39,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:39,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:07:39,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:07:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:07:39,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:39,283 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 14 states. [2018-10-02 12:07:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:39,521 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-10-02 12:07:39,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:07:39,521 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-10-02 12:07:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:39,522 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:07:39,522 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:07:39,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:07:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2018-10-02 12:07:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:07:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-02 12:07:39,528 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2018-10-02 12:07:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:39,528 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-02 12:07:39,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:07:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-02 12:07:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:07:39,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:39,529 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2018-10-02 12:07:39,529 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:39,530 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:39,530 INFO L82 PathProgramCache]: Analyzing trace with hash 716104416, now seen corresponding path program 21 times [2018-10-02 12:07:39,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:39,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:39,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:39,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:39,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:40,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:40,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:40,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:40,128 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-02 12:07:40,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:40,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:40,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:40,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:07:40,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:07:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:07:40,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:40,275 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 26 states. [2018-10-02 12:07:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:41,000 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-02 12:07:41,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:07:41,001 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-02 12:07:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:41,001 INFO L225 Difference]: With dead ends: 121 [2018-10-02 12:07:41,002 INFO L226 Difference]: Without dead ends: 66 [2018-10-02 12:07:41,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:07:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-02 12:07:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-02 12:07:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-02 12:07:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2018-10-02 12:07:41,007 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 62 [2018-10-02 12:07:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:41,007 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2018-10-02 12:07:41,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:07:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2018-10-02 12:07:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-02 12:07:41,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:41,008 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1] [2018-10-02 12:07:41,008 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:41,008 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:41,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1699180391, now seen corresponding path program 22 times [2018-10-02 12:07:41,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:41,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:41,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:41,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:41,454 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:41,484 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:41,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:41,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:41,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:41,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:07:41,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:07:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:07:41,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:41,693 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 15 states. [2018-10-02 12:07:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:41,917 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2018-10-02 12:07:41,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:07:41,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2018-10-02 12:07:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:41,919 INFO L225 Difference]: With dead ends: 80 [2018-10-02 12:07:41,919 INFO L226 Difference]: Without dead ends: 74 [2018-10-02 12:07:41,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-02 12:07:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2018-10-02 12:07:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-02 12:07:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-02 12:07:41,926 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2018-10-02 12:07:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:41,926 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-02 12:07:41,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:07:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-02 12:07:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-02 12:07:41,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:41,927 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2018-10-02 12:07:41,927 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:41,927 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1490448497, now seen corresponding path program 23 times [2018-10-02 12:07:41,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:41,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:41,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:41,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:42,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:42,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:42,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:42,964 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:07:42,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:42,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:43,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:43,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:07:43,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:07:43,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:07:43,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:43,142 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 28 states. [2018-10-02 12:07:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:44,412 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2018-10-02 12:07:44,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:07:44,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2018-10-02 12:07:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:44,413 INFO L225 Difference]: With dead ends: 130 [2018-10-02 12:07:44,413 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:07:44,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:07:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:07:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:07:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:07:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-02 12:07:44,419 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2018-10-02 12:07:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:44,419 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-02 12:07:44,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:07:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-02 12:07:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:07:44,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:44,420 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2018-10-02 12:07:44,420 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:44,420 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:44,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1188334966, now seen corresponding path program 24 times [2018-10-02 12:07:44,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:44,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:44,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:44,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:44,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:44,685 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:44,692 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:44,726 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:07:44,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:44,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:44,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:44,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:07:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:07:44,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:07:44,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:44,856 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 16 states. [2018-10-02 12:07:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:45,115 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2018-10-02 12:07:45,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:07:45,115 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2018-10-02 12:07:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:45,116 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:07:45,116 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:07:45,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:07:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:07:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-10-02 12:07:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:07:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-02 12:07:45,123 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 68 [2018-10-02 12:07:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:45,124 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-02 12:07:45,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:07:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-02 12:07:45,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:07:45,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:45,125 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1] [2018-10-02 12:07:45,125 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:45,125 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1190013460, now seen corresponding path program 25 times [2018-10-02 12:07:45,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:45,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:45,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:45,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:45,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:45,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:45,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:45,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:45,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:45,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:45,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:07:45,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:07:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:07:45,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:45,712 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 30 states. [2018-10-02 12:07:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:47,185 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-02 12:07:47,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:07:47,185 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 72 [2018-10-02 12:07:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:47,186 INFO L225 Difference]: With dead ends: 139 [2018-10-02 12:07:47,186 INFO L226 Difference]: Without dead ends: 76 [2018-10-02 12:07:47,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:07:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-02 12:07:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-02 12:07:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-02 12:07:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-10-02 12:07:47,195 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 72 [2018-10-02 12:07:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:47,195 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-10-02 12:07:47,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:07:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-10-02 12:07:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-02 12:07:47,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:47,196 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2018-10-02 12:07:47,196 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:47,196 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1746112411, now seen corresponding path program 26 times [2018-10-02 12:07:47,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:47,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:47,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:47,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:47,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:47,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:47,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:47,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:47,443 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:47,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:47,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:47,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:47,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:07:47,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:07:47,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:07:47,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:47,594 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2018-10-02 12:07:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:48,085 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2018-10-02 12:07:48,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:07:48,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2018-10-02 12:07:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:48,086 INFO L225 Difference]: With dead ends: 90 [2018-10-02 12:07:48,086 INFO L226 Difference]: Without dead ends: 84 [2018-10-02 12:07:48,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-02 12:07:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2018-10-02 12:07:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-02 12:07:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-10-02 12:07:48,095 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 73 [2018-10-02 12:07:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:48,095 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-10-02 12:07:48,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:07:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-10-02 12:07:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-02 12:07:48,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:48,096 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1] [2018-10-02 12:07:48,097 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:48,097 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash 613460315, now seen corresponding path program 27 times [2018-10-02 12:07:48,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:48,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:48,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:48,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:48,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:48,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:48,454 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:48,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-02 12:07:48,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:48,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:48,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:48,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:07:48,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:07:48,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:07:48,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:48,654 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 32 states. [2018-10-02 12:07:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:49,071 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2018-10-02 12:07:49,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:07:49,071 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 77 [2018-10-02 12:07:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:49,072 INFO L225 Difference]: With dead ends: 148 [2018-10-02 12:07:49,072 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:07:49,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:07:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:07:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:07:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-02 12:07:49,078 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2018-10-02 12:07:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:49,078 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-02 12:07:49,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:07:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-02 12:07:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:07:49,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:49,079 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2018-10-02 12:07:49,079 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:49,080 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:49,080 INFO L82 PathProgramCache]: Analyzing trace with hash 381727362, now seen corresponding path program 28 times [2018-10-02 12:07:49,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:49,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:49,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:49,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:49,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:49,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:49,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:49,281 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:49,317 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:49,317 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:49,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:49,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:49,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:07:49,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:07:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:07:49,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:49,502 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 18 states. [2018-10-02 12:07:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:49,807 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2018-10-02 12:07:49,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:07:49,808 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2018-10-02 12:07:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:49,808 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:07:49,809 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:07:49,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:07:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2018-10-02 12:07:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:07:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-02 12:07:49,816 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 78 [2018-10-02 12:07:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:49,816 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-02 12:07:49,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:07:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-02 12:07:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:07:49,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:49,817 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1, 1, 1] [2018-10-02 12:07:49,817 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:49,818 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1123248904, now seen corresponding path program 29 times [2018-10-02 12:07:49,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:49,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:49,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:49,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:49,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:50,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:50,462 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:50,470 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:50,525 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-02 12:07:50,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:50,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:50,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:50,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:07:50,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:07:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:07:50,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:50,708 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 34 states. [2018-10-02 12:07:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:52,091 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-02 12:07:52,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:07:52,091 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 82 [2018-10-02 12:07:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:52,092 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:07:52,092 INFO L226 Difference]: Without dead ends: 86 [2018-10-02 12:07:52,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:07:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-02 12:07:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-02 12:07:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-02 12:07:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-10-02 12:07:52,101 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 82 [2018-10-02 12:07:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:52,101 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-10-02 12:07:52,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:07:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-10-02 12:07:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:07:52,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:52,102 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1] [2018-10-02 12:07:52,103 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:52,103 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1191652401, now seen corresponding path program 30 times [2018-10-02 12:07:52,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:52,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:52,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:52,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:52,815 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:52,865 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-02 12:07:52,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:52,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:53,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:53,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:07:53,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:07:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:07:53,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:53,161 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 19 states. [2018-10-02 12:07:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:53,502 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2018-10-02 12:07:53,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:07:53,503 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2018-10-02 12:07:53,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:53,504 INFO L225 Difference]: With dead ends: 100 [2018-10-02 12:07:53,504 INFO L226 Difference]: Without dead ends: 94 [2018-10-02 12:07:53,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime [2018-10-02 12:07:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-02 12:07:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-10-02 12:07:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-02 12:07:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2018-10-02 12:07:53,514 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 83 [2018-10-02 12:07:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:53,514 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2018-10-02 12:07:53,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:07:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2018-10-02 12:07:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-02 12:07:53,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:53,515 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 1, 1, 1, 1, 1] [2018-10-02 12:07:53,515 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:53,515 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 219193127, now seen corresponding path program 31 times [2018-10-02 12:07:53,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:53,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:53,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:53,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:53,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:54,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:54,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:54,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:54,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:54,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:54,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:07:54,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:07:54,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:07:54,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:54,457 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 36 states. [2018-10-02 12:07:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:56,616 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2018-10-02 12:07:56,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:07:56,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 87 [2018-10-02 12:07:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:56,617 INFO L225 Difference]: With dead ends: 166 [2018-10-02 12:07:56,617 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:07:56,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:07:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:07:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:07:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:07:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-02 12:07:56,630 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2018-10-02 12:07:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:56,630 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-02 12:07:56,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:07:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-02 12:07:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:07:56,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:56,631 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1] [2018-10-02 12:07:56,631 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:56,632 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:56,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1134517362, now seen corresponding path program 32 times [2018-10-02 12:07:56,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:56,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:56,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:56,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:56,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:57,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:57,006 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:57,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:57,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:57,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:57,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:57,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:57,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:07:57,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:07:57,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:07:57,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:57,266 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 20 states. [2018-10-02 12:07:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:57,603 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-10-02 12:07:57,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:07:57,603 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-10-02 12:07:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:57,604 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:07:57,604 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:07:57,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:07:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:07:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-10-02 12:07:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:07:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-02 12:07:57,612 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 88 [2018-10-02 12:07:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:57,613 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-02 12:07:57,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:07:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-02 12:07:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:07:57,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:57,613 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 1, 1, 1, 1, 1] [2018-10-02 12:07:57,614 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:57,614 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:57,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1074454524, now seen corresponding path program 33 times [2018-10-02 12:07:57,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:57,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:57,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:57,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:57,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:58,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:58,439 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:58,446 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:58,507 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-02 12:07:58,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:58,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:58,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:58,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:07:58,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:07:58,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:07:58,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:58,671 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 38 states. [2018-10-02 12:08:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:01,036 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-02 12:08:01,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:08:01,037 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2018-10-02 12:08:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:01,037 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:08:01,037 INFO L226 Difference]: Without dead ends: 96 [2018-10-02 12:08:01,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:08:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-02 12:08:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-02 12:08:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-02 12:08:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-10-02 12:08:01,045 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 92 [2018-10-02 12:08:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:01,045 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-10-02 12:08:01,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:08:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-10-02 12:08:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-02 12:08:01,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:01,046 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2018-10-02 12:08:01,046 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:01,046 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:01,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1513438211, now seen corresponding path program 34 times [2018-10-02 12:08:01,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:01,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:01,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:01,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:01,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:01,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:01,351 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:01,358 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:01,401 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:01,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:01,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:02,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:02,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:08:02,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:08:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:08:02,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:02,090 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 21 states. [2018-10-02 12:08:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:02,388 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2018-10-02 12:08:02,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:08:02,388 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2018-10-02 12:08:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:02,389 INFO L225 Difference]: With dead ends: 110 [2018-10-02 12:08:02,389 INFO L226 Difference]: Without dead ends: 104 [2018-10-02 12:08:02,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.1s impTime [2018-10-02 12:08:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-02 12:08:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-10-02 12:08:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-02 12:08:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-10-02 12:08:02,400 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 93 [2018-10-02 12:08:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:02,400 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-10-02 12:08:02,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:08:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-10-02 12:08:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-02 12:08:02,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:02,401 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 1, 1, 1, 1, 1] [2018-10-02 12:08:02,401 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:02,401 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1385467661, now seen corresponding path program 35 times [2018-10-02 12:08:02,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:02,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:02,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:02,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:02,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:04,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:04,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:04,098 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:04,153 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:08:04,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:04,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:04,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:04,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:08:04,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:08:04,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:08:04,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:04,358 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 40 states. [2018-10-02 12:08:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:08,004 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2018-10-02 12:08:08,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:08:08,005 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 97 [2018-10-02 12:08:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:08,005 INFO L225 Difference]: With dead ends: 184 [2018-10-02 12:08:08,006 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:08:08,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime [2018-10-02 12:08:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:08:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:08:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:08:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-02 12:08:08,016 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2018-10-02 12:08:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:08,016 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-02 12:08:08,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:08:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-02 12:08:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:08:08,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:08,017 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2018-10-02 12:08:08,017 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:08,018 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:08,018 INFO L82 PathProgramCache]: Analyzing trace with hash -209035110, now seen corresponding path program 36 times [2018-10-02 12:08:08,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:08,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:08,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:08,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:08,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:08,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:08,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:08,492 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:08,554 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:08:08,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:08,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:08,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:08,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:08:08,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:08:08,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:08:08,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:08,763 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 22 states. [2018-10-02 12:08:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:09,195 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2018-10-02 12:08:09,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:08:09,195 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2018-10-02 12:08:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:09,197 INFO L225 Difference]: With dead ends: 115 [2018-10-02 12:08:09,197 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:08:09,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:08:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:08:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-10-02 12:08:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:08:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-02 12:08:09,208 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 98 [2018-10-02 12:08:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:09,209 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-02 12:08:09,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:08:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-02 12:08:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:08:09,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:09,210 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 1, 1, 1, 1, 1] [2018-10-02 12:08:09,210 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:09,210 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1566476528, now seen corresponding path program 37 times [2018-10-02 12:08:09,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:09,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:09,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:12,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:12,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:12,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:12,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:12,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:12,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:08:12,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:08:12,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:08:12,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:12,419 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 42 states. [2018-10-02 12:08:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:15,586 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-02 12:08:15,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:08:15,587 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 102 [2018-10-02 12:08:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:15,588 INFO L225 Difference]: With dead ends: 193 [2018-10-02 12:08:15,588 INFO L226 Difference]: Without dead ends: 106 [2018-10-02 12:08:15,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.6s impTime [2018-10-02 12:08:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-02 12:08:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-02 12:08:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-02 12:08:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-10-02 12:08:15,602 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 102 [2018-10-02 12:08:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:15,603 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-10-02 12:08:15,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:08:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-10-02 12:08:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-02 12:08:15,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:15,604 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2018-10-02 12:08:15,604 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:15,604 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1920546761, now seen corresponding path program 38 times [2018-10-02 12:08:15,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:15,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:15,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:15,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:15,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:17,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:17,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:17,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:17,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:17,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:17,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:17,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:17,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:08:17,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:08:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:08:17,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:17,340 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 23 states. [2018-10-02 12:08:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:17,670 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2018-10-02 12:08:17,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:08:17,671 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 103 [2018-10-02 12:08:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:17,672 INFO L225 Difference]: With dead ends: 120 [2018-10-02 12:08:17,672 INFO L226 Difference]: Without dead ends: 114 [2018-10-02 12:08:17,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime [2018-10-02 12:08:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-02 12:08:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2018-10-02 12:08:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-02 12:08:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-10-02 12:08:17,683 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 103 [2018-10-02 12:08:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:17,684 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-10-02 12:08:17,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:08:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-10-02 12:08:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-02 12:08:17,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:17,685 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 1, 1, 1, 1, 1] [2018-10-02 12:08:17,685 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:17,685 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash -756867393, now seen corresponding path program 39 times [2018-10-02 12:08:17,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:17,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:17,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:17,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:17,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:19,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:19,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:19,077 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:19,143 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-02 12:08:19,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:19,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:19,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:19,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:08:19,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:08:19,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:08:19,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:19,369 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 44 states. [2018-10-02 12:08:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:22,444 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2018-10-02 12:08:22,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:08:22,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 107 [2018-10-02 12:08:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:22,445 INFO L225 Difference]: With dead ends: 202 [2018-10-02 12:08:22,445 INFO L226 Difference]: Without dead ends: 111 [2018-10-02 12:08:22,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:08:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-02 12:08:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-02 12:08:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-02 12:08:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-02 12:08:22,455 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 107 [2018-10-02 12:08:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:22,455 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-02 12:08:22,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:08:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-02 12:08:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:08:22,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:22,456 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2018-10-02 12:08:22,456 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:22,456 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash 798222758, now seen corresponding path program 40 times [2018-10-02 12:08:22,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:22,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:22,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:22,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:22,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:22,763 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:22,771 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:22,819 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:22,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:22,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:23,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:23,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:08:23,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:08:23,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:08:23,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:23,932 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 24 states. [2018-10-02 12:08:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:24,272 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2018-10-02 12:08:24,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:08:24,273 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2018-10-02 12:08:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:24,273 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:08:24,273 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:08:24,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.1s impTime [2018-10-02 12:08:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:08:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-10-02 12:08:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:08:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-02 12:08:24,288 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 108 [2018-10-02 12:08:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:24,288 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-02 12:08:24,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:08:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-02 12:08:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-02 12:08:24,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:24,289 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 1, 1, 1, 1, 1] [2018-10-02 12:08:24,290 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:24,290 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1030199836, now seen corresponding path program 41 times [2018-10-02 12:08:24,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:24,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:24,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:25,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:25,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:25,509 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:25,573 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-02 12:08:25,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:25,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:25,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:25,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:08:25,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:08:25,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:08:25,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:25,926 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 46 states. [2018-10-02 12:08:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:29,554 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-02 12:08:29,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:08:29,554 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 112 [2018-10-02 12:08:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:29,555 INFO L225 Difference]: With dead ends: 211 [2018-10-02 12:08:29,555 INFO L226 Difference]: Without dead ends: 116 [2018-10-02 12:08:29,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime [2018-10-02 12:08:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-02 12:08:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-02 12:08:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-02 12:08:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2018-10-02 12:08:29,570 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 112 [2018-10-02 12:08:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:29,570 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2018-10-02 12:08:29,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:08:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2018-10-02 12:08:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-02 12:08:29,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:29,571 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1] [2018-10-02 12:08:29,572 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:29,572 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:29,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1949005931, now seen corresponding path program 42 times [2018-10-02 12:08:29,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:29,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:29,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:29,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:30,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:30,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:30,527 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:30,639 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-02 12:08:30,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:30,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:30,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:30,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:08:30,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:08:30,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:08:30,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:30,852 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 25 states. [2018-10-02 12:08:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:31,306 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2018-10-02 12:08:31,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:08:31,306 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2018-10-02 12:08:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:31,307 INFO L225 Difference]: With dead ends: 130 [2018-10-02 12:08:31,307 INFO L226 Difference]: Without dead ends: 124 [2018-10-02 12:08:31,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime [2018-10-02 12:08:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-02 12:08:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2018-10-02 12:08:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-02 12:08:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2018-10-02 12:08:31,320 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2018-10-02 12:08:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:31,320 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2018-10-02 12:08:31,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:08:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2018-10-02 12:08:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-02 12:08:31,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:31,321 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2018-10-02 12:08:31,321 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:31,321 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash 725198987, now seen corresponding path program 43 times [2018-10-02 12:08:31,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:31,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:31,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:31,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:31,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:31,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:31,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:31,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:31,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:32,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:32,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:08:32,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:08:32,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:08:32,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:32,108 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 48 states. [2018-10-02 12:08:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:34,354 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-02 12:08:34,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:08:34,354 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 117 [2018-10-02 12:08:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:34,355 INFO L225 Difference]: With dead ends: 220 [2018-10-02 12:08:34,355 INFO L226 Difference]: Without dead ends: 121 [2018-10-02 12:08:34,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:08:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-02 12:08:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-02 12:08:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-02 12:08:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-02 12:08:34,364 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 117 [2018-10-02 12:08:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:34,364 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-02 12:08:34,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:08:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-02 12:08:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:08:34,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:34,365 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2018-10-02 12:08:34,365 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:34,366 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:34,366 INFO L82 PathProgramCache]: Analyzing trace with hash 995311282, now seen corresponding path program 44 times [2018-10-02 12:08:34,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:34,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:34,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:34,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:34,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:34,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:34,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:34,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:34,783 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:34,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:34,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:35,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:35,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:08:35,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:08:35,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:08:35,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:35,131 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 26 states. [2018-10-02 12:08:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:35,514 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-10-02 12:08:35,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:08:35,514 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2018-10-02 12:08:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:35,515 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:08:35,515 INFO L226 Difference]: Without dead ends: 129 [2018-10-02 12:08:35,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime [2018-10-02 12:08:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-02 12:08:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2018-10-02 12:08:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-02 12:08:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-02 12:08:35,529 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 118 [2018-10-02 12:08:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:35,529 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-02 12:08:35,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:08:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-02 12:08:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:08:35,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:35,530 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 1, 1, 1, 1, 1] [2018-10-02 12:08:35,530 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:35,530 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:35,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1935656, now seen corresponding path program 45 times [2018-10-02 12:08:35,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:35,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:35,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:35,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:35,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:36,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:36,292 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:36,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:36,387 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-02 12:08:36,388 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:36,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:36,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:36,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:08:36,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:08:36,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:08:36,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:36,612 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 50 states. [2018-10-02 12:08:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:40,269 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-02 12:08:40,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:08:40,270 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 122 [2018-10-02 12:08:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:40,270 INFO L225 Difference]: With dead ends: 229 [2018-10-02 12:08:40,270 INFO L226 Difference]: Without dead ends: 126 [2018-10-02 12:08:40,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:08:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-02 12:08:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-02 12:08:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-02 12:08:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2018-10-02 12:08:40,282 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 122 [2018-10-02 12:08:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:40,282 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2018-10-02 12:08:40,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:08:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2018-10-02 12:08:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-02 12:08:40,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:40,283 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1] [2018-10-02 12:08:40,283 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:40,283 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1360966497, now seen corresponding path program 46 times [2018-10-02 12:08:40,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:40,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:40,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:40,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:40,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:40,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:40,572 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:40,627 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:40,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:40,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:40,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:40,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:08:40,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:08:40,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:08:40,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:40,879 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 27 states. [2018-10-02 12:08:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:41,297 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2018-10-02 12:08:41,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:08:41,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 123 [2018-10-02 12:08:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:41,298 INFO L225 Difference]: With dead ends: 140 [2018-10-02 12:08:41,298 INFO L226 Difference]: Without dead ends: 134 [2018-10-02 12:08:41,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:08:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-02 12:08:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-10-02 12:08:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-02 12:08:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-10-02 12:08:41,309 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2018-10-02 12:08:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:41,309 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-10-02 12:08:41,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:08:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-10-02 12:08:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-02 12:08:41,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:41,310 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 1, 1, 1, 1, 1] [2018-10-02 12:08:41,310 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:41,310 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:41,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1531900329, now seen corresponding path program 47 times [2018-10-02 12:08:41,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:41,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:41,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:41,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:42,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:42,987 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:42,995 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:43,087 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:08:43,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:43,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:43,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:43,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:08:43,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:08:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:08:43,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:43,336 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 52 states. [2018-10-02 12:08:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:48,029 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2018-10-02 12:08:48,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:08:48,029 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 127 [2018-10-02 12:08:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:48,030 INFO L225 Difference]: With dead ends: 238 [2018-10-02 12:08:48,030 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:08:48,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime [2018-10-02 12:08:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:08:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:08:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:08:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-02 12:08:48,040 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 127 [2018-10-02 12:08:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:48,041 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-02 12:08:48,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:08:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-02 12:08:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:08:48,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:48,042 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1] [2018-10-02 12:08:48,042 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:48,042 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash -652320834, now seen corresponding path program 48 times [2018-10-02 12:08:48,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:48,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:48,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:48,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:48,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:48,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:48,285 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:48,292 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:48,377 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:08:48,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:48,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:48,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:48,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:08:48,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:08:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:08:48,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:48,688 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 28 states. [2018-10-02 12:08:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:49,132 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2018-10-02 12:08:49,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:08:49,132 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2018-10-02 12:08:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:49,133 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:08:49,133 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:08:49,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:08:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:08:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-10-02 12:08:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-02 12:08:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-02 12:08:49,147 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 128 [2018-10-02 12:08:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:49,148 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-02 12:08:49,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:08:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-02 12:08:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-02 12:08:49,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:49,149 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 1, 1, 1, 1, 1] [2018-10-02 12:08:49,149 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:49,149 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1843837900, now seen corresponding path program 49 times [2018-10-02 12:08:49,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:49,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:49,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:49,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:49,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:50,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:50,025 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:50,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:50,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:51,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:51,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:08:51,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:08:51,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:08:51,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:51,234 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 54 states. [2018-10-02 12:08:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:52,543 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-02 12:08:52,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:08:52,543 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 132 [2018-10-02 12:08:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:52,544 INFO L225 Difference]: With dead ends: 247 [2018-10-02 12:08:52,544 INFO L226 Difference]: Without dead ends: 136 [2018-10-02 12:08:52,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 0.8s impTime [2018-10-02 12:08:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-02 12:08:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-02 12:08:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-02 12:08:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-10-02 12:08:52,555 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 132 [2018-10-02 12:08:52,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:52,555 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-10-02 12:08:52,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:08:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-10-02 12:08:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-02 12:08:52,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:52,556 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1] [2018-10-02 12:08:52,556 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:52,556 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash 35240749, now seen corresponding path program 50 times [2018-10-02 12:08:52,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:52,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:52,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:52,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:52,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:52,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:52,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:52,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:52,977 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:52,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:52,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:53,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:53,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:08:53,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:08:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:08:53,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:53,401 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 29 states. [2018-10-02 12:08:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:53,872 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2018-10-02 12:08:53,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:08:53,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 133 [2018-10-02 12:08:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:53,873 INFO L225 Difference]: With dead ends: 150 [2018-10-02 12:08:53,873 INFO L226 Difference]: Without dead ends: 144 [2018-10-02 12:08:53,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime [2018-10-02 12:08:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-02 12:08:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2018-10-02 12:08:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-02 12:08:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-10-02 12:08:53,889 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 133 [2018-10-02 12:08:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:53,889 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-10-02 12:08:53,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:08:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-10-02 12:08:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-02 12:08:53,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:53,890 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2018-10-02 12:08:53,890 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:53,890 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash -838119389, now seen corresponding path program 51 times [2018-10-02 12:08:53,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:53,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:53,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:53,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:55,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:55,073 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:55,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-02 12:08:55,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:55,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:55,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:08:55,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:08:55,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:08:55,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:55,439 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 56 states. [2018-10-02 12:09:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:00,763 INFO L93 Difference]: Finished difference Result 256 states and 260 transitions. [2018-10-02 12:09:00,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:09:00,763 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 137 [2018-10-02 12:09:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:00,764 INFO L225 Difference]: With dead ends: 256 [2018-10-02 12:09:00,764 INFO L226 Difference]: Without dead ends: 141 [2018-10-02 12:09:00,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:09:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-02 12:09:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-02 12:09:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-02 12:09:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-02 12:09:00,776 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 137 [2018-10-02 12:09:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:00,776 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-02 12:09:00,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:09:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-02 12:09:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:09:00,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:00,777 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1] [2018-10-02 12:09:00,777 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:00,778 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1657490634, now seen corresponding path program 52 times [2018-10-02 12:09:00,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:00,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:00,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:00,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:00,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:01,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:01,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:01,138 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:01,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:01,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:01,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:01,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:01,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:09:01,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:09:01,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:09:01,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:01,611 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 30 states. [2018-10-02 12:09:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:02,050 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2018-10-02 12:09:02,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:09:02,050 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 138 [2018-10-02 12:09:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:02,051 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:09:02,051 INFO L226 Difference]: Without dead ends: 149 [2018-10-02 12:09:02,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime [2018-10-02 12:09:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-02 12:09:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-10-02 12:09:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-02 12:09:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-02 12:09:02,064 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 138 [2018-10-02 12:09:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:02,064 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-02 12:09:02,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:09:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-02 12:09:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-02 12:09:02,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:02,065 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 1, 1, 1, 1, 1] [2018-10-02 12:09:02,065 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:02,065 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1915800384, now seen corresponding path program 53 times [2018-10-02 12:09:02,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:02,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:02,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:02,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:03,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:03,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:03,021 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:03,105 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-02 12:09:03,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:03,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:03,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:03,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:09:03,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:09:03,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:09:03,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:03,447 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 58 states. [2018-10-02 12:09:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:09,076 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-10-02 12:09:09,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:09:09,076 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 142 [2018-10-02 12:09:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:09,077 INFO L225 Difference]: With dead ends: 265 [2018-10-02 12:09:09,077 INFO L226 Difference]: Without dead ends: 146 [2018-10-02 12:09:09,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:09:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-02 12:09:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-02 12:09:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-02 12:09:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-10-02 12:09:09,088 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 142 [2018-10-02 12:09:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:09,088 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-10-02 12:09:09,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:09:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-10-02 12:09:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-02 12:09:09,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:09,089 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1] [2018-10-02 12:09:09,089 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:09,089 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash 520593145, now seen corresponding path program 54 times [2018-10-02 12:09:09,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:09,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:09,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:09,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:09,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:09,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:09,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:09,410 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:09,502 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-02 12:09:09,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:09,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:10,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:10,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:09:10,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:09:10,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:09:10,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:10,095 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 31 states. [2018-10-02 12:09:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:10,544 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2018-10-02 12:09:10,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:09:10,545 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 143 [2018-10-02 12:09:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:10,546 INFO L225 Difference]: With dead ends: 160 [2018-10-02 12:09:10,546 INFO L226 Difference]: Without dead ends: 154 [2018-10-02 12:09:10,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime [2018-10-02 12:09:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-02 12:09:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-10-02 12:09:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-02 12:09:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2018-10-02 12:09:10,558 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 143 [2018-10-02 12:09:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:10,558 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2018-10-02 12:09:10,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:09:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2018-10-02 12:09:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-02 12:09:10,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:10,559 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 1, 1, 1, 1, 1] [2018-10-02 12:09:10,559 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:10,559 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:10,559 INFO L82 PathProgramCache]: Analyzing trace with hash 915041775, now seen corresponding path program 55 times [2018-10-02 12:09:10,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:10,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:10,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:10,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:10,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:11,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:11,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:11,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:11,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:12,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:12,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:09:12,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:09:12,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:09:12,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:12,325 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 60 states. [2018-10-02 12:09:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:18,416 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2018-10-02 12:09:18,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:09:18,416 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 147 [2018-10-02 12:09:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:18,417 INFO L225 Difference]: With dead ends: 274 [2018-10-02 12:09:18,417 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:09:18,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime [2018-10-02 12:09:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:09:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:09:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:09:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-02 12:09:18,433 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 147 [2018-10-02 12:09:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:18,434 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-02 12:09:18,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:09:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-02 12:09:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:09:18,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:18,434 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1] [2018-10-02 12:09:18,435 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:18,435 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:18,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1773143510, now seen corresponding path program 56 times [2018-10-02 12:09:18,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:18,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:18,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:18,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:18,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:18,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:18,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:18,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:18,805 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:18,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:18,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:19,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:19,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:09:19,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:09:19,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:09:19,055 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:19,056 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 32 states. [2018-10-02 12:09:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:19,613 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-10-02 12:09:19,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:09:19,613 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 148 [2018-10-02 12:09:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:19,614 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:09:19,614 INFO L226 Difference]: Without dead ends: 159 [2018-10-02 12:09:19,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:09:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-02 12:09:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-10-02 12:09:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:09:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-02 12:09:19,627 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 148 [2018-10-02 12:09:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:19,627 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-02 12:09:19,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:09:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-02 12:09:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:09:19,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:19,628 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 1, 1, 1, 1, 1] [2018-10-02 12:09:19,628 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:19,628 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1766187444, now seen corresponding path program 57 times [2018-10-02 12:09:19,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:19,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:19,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:19,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:19,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:20,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:20,994 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:21,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:21,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-02 12:09:21,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:21,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:21,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:21,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:09:21,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:09:21,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:09:21,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:21,464 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 62 states. [2018-10-02 12:09:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:27,963 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-10-02 12:09:27,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:09:27,963 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 152 [2018-10-02 12:09:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:27,964 INFO L225 Difference]: With dead ends: 283 [2018-10-02 12:09:27,964 INFO L226 Difference]: Without dead ends: 156 [2018-10-02 12:09:27,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:09:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-02 12:09:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-02 12:09:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-02 12:09:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2018-10-02 12:09:27,976 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 152 [2018-10-02 12:09:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:27,977 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2018-10-02 12:09:27,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:09:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2018-10-02 12:09:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-02 12:09:27,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:27,977 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1] [2018-10-02 12:09:27,978 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:27,978 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash -928358715, now seen corresponding path program 58 times [2018-10-02 12:09:27,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:27,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:27,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:27,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:28,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:28,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:28,282 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:28,352 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:28,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:28,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:28,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:28,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:09:28,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:09:28,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:09:28,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:28,683 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 33 states. [2018-10-02 12:09:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:29,322 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2018-10-02 12:09:29,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:09:29,322 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 153 [2018-10-02 12:09:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:29,323 INFO L225 Difference]: With dead ends: 170 [2018-10-02 12:09:29,323 INFO L226 Difference]: Without dead ends: 164 [2018-10-02 12:09:29,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:09:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-02 12:09:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2018-10-02 12:09:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-02 12:09:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-10-02 12:09:29,342 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 153 [2018-10-02 12:09:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:29,342 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-10-02 12:09:29,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:09:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-10-02 12:09:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-02 12:09:29,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:29,343 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 1, 1, 1, 1, 1] [2018-10-02 12:09:29,343 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:29,343 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:29,344 INFO L82 PathProgramCache]: Analyzing trace with hash -839882821, now seen corresponding path program 59 times [2018-10-02 12:09:29,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:29,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:29,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:29,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:29,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:30,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:30,232 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:30,251 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:30,357 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-02 12:09:30,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:30,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:30,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:30,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:09:30,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:09:30,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:09:30,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:30,700 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 64 states. [2018-10-02 12:09:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:34,756 INFO L93 Difference]: Finished difference Result 292 states and 296 transitions. [2018-10-02 12:09:34,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:09:34,756 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 157 [2018-10-02 12:09:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:34,757 INFO L225 Difference]: With dead ends: 292 [2018-10-02 12:09:34,757 INFO L226 Difference]: Without dead ends: 161 [2018-10-02 12:09:34,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:09:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-02 12:09:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-02 12:09:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-02 12:09:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-02 12:09:34,776 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 157 [2018-10-02 12:09:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:34,776 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-02 12:09:34,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:09:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-02 12:09:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:09:34,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:34,777 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2018-10-02 12:09:34,777 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:34,777 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1453492962, now seen corresponding path program 60 times [2018-10-02 12:09:34,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:34,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:34,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:34,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:35,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:35,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:35,190 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:35,361 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:09:35,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:35,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:35,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:35,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:09:35,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:09:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:09:35,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:35,766 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 34 states. [2018-10-02 12:09:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:36,294 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2018-10-02 12:09:36,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:09:36,294 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 158 [2018-10-02 12:09:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:36,295 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:09:36,295 INFO L226 Difference]: Without dead ends: 169 [2018-10-02 12:09:36,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:09:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-02 12:09:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2018-10-02 12:09:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-02 12:09:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-02 12:09:36,315 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 158 [2018-10-02 12:09:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:36,315 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-02 12:09:36,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:09:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-02 12:09:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-02 12:09:36,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:36,316 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1, 1, 1, 1] [2018-10-02 12:09:36,316 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:36,316 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:36,317 INFO L82 PathProgramCache]: Analyzing trace with hash 227229016, now seen corresponding path program 61 times [2018-10-02 12:09:36,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:36,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:36,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:36,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:36,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:37,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:37,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:37,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:37,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:37,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:37,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:09:37,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:09:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:09:37,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:37,766 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 66 states. [2018-10-02 12:09:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:44,157 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2018-10-02 12:09:44,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:09:44,157 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 162 [2018-10-02 12:09:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:44,158 INFO L225 Difference]: With dead ends: 301 [2018-10-02 12:09:44,158 INFO L226 Difference]: Without dead ends: 166 [2018-10-02 12:09:44,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:09:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-02 12:09:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-02 12:09:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-02 12:09:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-02 12:09:44,177 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 162 [2018-10-02 12:09:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:44,178 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-02 12:09:44,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:09:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-02 12:09:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-02 12:09:44,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:44,179 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1, 1] [2018-10-02 12:09:44,179 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:44,179 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash 541325969, now seen corresponding path program 62 times [2018-10-02 12:09:44,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:44,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:44,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:44,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:44,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:44,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:44,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:44,647 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:44,731 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:44,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:44,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:45,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:45,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:09:45,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:09:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:09:45,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:45,012 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 35 states. [2018-10-02 12:09:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:45,661 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2018-10-02 12:09:45,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:09:45,661 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 163 [2018-10-02 12:09:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:45,662 INFO L225 Difference]: With dead ends: 180 [2018-10-02 12:09:45,662 INFO L226 Difference]: Without dead ends: 174 [2018-10-02 12:09:45,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:09:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-02 12:09:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2018-10-02 12:09:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-02 12:09:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2018-10-02 12:09:45,680 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 163 [2018-10-02 12:09:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:45,680 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2018-10-02 12:09:45,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:09:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2018-10-02 12:09:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-02 12:09:45,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:45,681 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 1, 1, 1, 1, 1] [2018-10-02 12:09:45,682 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:45,682 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:45,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1149189511, now seen corresponding path program 63 times [2018-10-02 12:09:45,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:45,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:45,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:45,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:45,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:46,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:46,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:46,571 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:46,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-02 12:09:46,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:46,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:47,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:47,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:09:47,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:09:47,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:09:47,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:47,100 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 68 states. [2018-10-02 12:09:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:48,631 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2018-10-02 12:09:48,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:09:48,631 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 167 [2018-10-02 12:09:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:48,632 INFO L225 Difference]: With dead ends: 310 [2018-10-02 12:09:48,632 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:09:48,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:09:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:09:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-02 12:09:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-02 12:09:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-02 12:09:48,660 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 167 [2018-10-02 12:09:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:48,660 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-02 12:09:48,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:09:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-02 12:09:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-02 12:09:48,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:48,661 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1, 1] [2018-10-02 12:09:48,661 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:48,661 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash 167304174, now seen corresponding path program 64 times [2018-10-02 12:09:48,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:48,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:48,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:48,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:48,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:49,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:49,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:49,103 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:49,181 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:49,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:49,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:49,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:49,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:09:49,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:09:49,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:09:49,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:49,542 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 36 states. [2018-10-02 12:09:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:50,188 INFO L93 Difference]: Finished difference Result 185 states and 188 transitions. [2018-10-02 12:09:50,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:09:50,189 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 168 [2018-10-02 12:09:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:50,190 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:09:50,190 INFO L226 Difference]: Without dead ends: 179 [2018-10-02 12:09:50,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:09:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-02 12:09:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-10-02 12:09:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:09:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-02 12:09:50,210 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 168 [2018-10-02 12:09:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:50,211 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-02 12:09:50,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:09:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-02 12:09:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-02 12:09:50,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:50,212 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 1, 1, 1, 1, 1] [2018-10-02 12:09:50,212 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:50,212 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:50,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1678104476, now seen corresponding path program 65 times [2018-10-02 12:09:50,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:50,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:50,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:51,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:51,564 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:51,572 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:51,680 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-02 12:09:51,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:51,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:52,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:52,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:09:52,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:09:52,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:09:52,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:52,230 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 70 states. [2018-10-02 12:10:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:00,456 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2018-10-02 12:10:00,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:10:00,457 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 172 [2018-10-02 12:10:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:00,457 INFO L225 Difference]: With dead ends: 319 [2018-10-02 12:10:00,458 INFO L226 Difference]: Without dead ends: 176 [2018-10-02 12:10:00,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime [2018-10-02 12:10:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-02 12:10:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-02 12:10:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-02 12:10:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-10-02 12:10:00,478 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 172 [2018-10-02 12:10:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:00,479 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-10-02 12:10:00,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:10:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-10-02 12:10:00,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-02 12:10:00,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:00,480 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1, 1] [2018-10-02 12:10:00,480 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:00,480 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1483312547, now seen corresponding path program 66 times [2018-10-02 12:10:00,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:00,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:00,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:00,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:00,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:01,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:01,005 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:01,013 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:01,147 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-02 12:10:01,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:01,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:01,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:01,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:10:01,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:10:01,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:10:01,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:01,457 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 37 states. [2018-10-02 12:10:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:02,019 INFO L93 Difference]: Finished difference Result 190 states and 193 transitions. [2018-10-02 12:10:02,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:10:02,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 173 [2018-10-02 12:10:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:02,020 INFO L225 Difference]: With dead ends: 190 [2018-10-02 12:10:02,020 INFO L226 Difference]: Without dead ends: 184 [2018-10-02 12:10:02,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime [2018-10-02 12:10:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-02 12:10:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-10-02 12:10:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-02 12:10:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-10-02 12:10:02,041 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 173 [2018-10-02 12:10:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:02,041 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-10-02 12:10:02,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:10:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-10-02 12:10:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-02 12:10:02,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:02,042 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 1, 1, 1, 1, 1] [2018-10-02 12:10:02,043 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:02,043 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1794699091, now seen corresponding path program 67 times [2018-10-02 12:10:02,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:02,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:02,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:02,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:02,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:03,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:03,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:03,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:03,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:03,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:03,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:10:03,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:10:03,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:10:03,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:03,759 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 72 states. [2018-10-02 12:10:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:12,579 INFO L93 Difference]: Finished difference Result 328 states and 332 transitions. [2018-10-02 12:10:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:10:12,579 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 177 [2018-10-02 12:10:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:12,580 INFO L225 Difference]: With dead ends: 328 [2018-10-02 12:10:12,580 INFO L226 Difference]: Without dead ends: 181 [2018-10-02 12:10:12,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:10:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-02 12:10:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-02 12:10:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-02 12:10:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-02 12:10:12,597 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 177 [2018-10-02 12:10:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:12,597 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-02 12:10:12,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:10:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-02 12:10:12,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:10:12,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:12,598 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1, 1] [2018-10-02 12:10:12,598 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:12,598 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:12,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2072574202, now seen corresponding path program 68 times [2018-10-02 12:10:12,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:12,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:12,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:12,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:12,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:13,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:13,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:13,064 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:13,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:13,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:13,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:13,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:13,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:10:13,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:10:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:10:13,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:13,446 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 38 states. [2018-10-02 12:10:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:14,039 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-10-02 12:10:14,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:10:14,039 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 178 [2018-10-02 12:10:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:14,040 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:10:14,040 INFO L226 Difference]: Without dead ends: 189 [2018-10-02 12:10:14,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:10:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-02 12:10:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-10-02 12:10:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-02 12:10:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-02 12:10:14,056 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 178 [2018-10-02 12:10:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:14,056 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-02 12:10:14,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:10:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-02 12:10:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:10:14,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:14,057 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 1, 1, 1, 1, 1] [2018-10-02 12:10:14,058 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:14,058 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1591533424, now seen corresponding path program 69 times [2018-10-02 12:10:14,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:14,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:14,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:14,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:14,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:15,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:15,650 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:15,657 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:15,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-02 12:10:15,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:15,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:16,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:16,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:10:16,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:10:16,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:10:16,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:16,167 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 74 states. [2018-10-02 12:10:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:25,539 INFO L93 Difference]: Finished difference Result 337 states and 341 transitions. [2018-10-02 12:10:25,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:10:25,540 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 182 [2018-10-02 12:10:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:25,540 INFO L225 Difference]: With dead ends: 337 [2018-10-02 12:10:25,540 INFO L226 Difference]: Without dead ends: 186 [2018-10-02 12:10:25,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime [2018-10-02 12:10:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-02 12:10:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-02 12:10:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-02 12:10:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2018-10-02 12:10:25,561 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 182 [2018-10-02 12:10:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:25,561 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2018-10-02 12:10:25,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:10:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2018-10-02 12:10:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-02 12:10:25,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:25,562 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1, 1] [2018-10-02 12:10:25,562 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:25,562 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1595685335, now seen corresponding path program 70 times [2018-10-02 12:10:25,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:25,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:25,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:25,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:25,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:25,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:25,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:26,002 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:26,090 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:26,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:26,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:26,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:26,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:10:26,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:10:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:10:26,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:26,436 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 39 states. [2018-10-02 12:10:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:27,319 INFO L93 Difference]: Finished difference Result 200 states and 203 transitions. [2018-10-02 12:10:27,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:10:27,319 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 183 [2018-10-02 12:10:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:27,320 INFO L225 Difference]: With dead ends: 200 [2018-10-02 12:10:27,320 INFO L226 Difference]: Without dead ends: 194 [2018-10-02 12:10:27,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime [2018-10-02 12:10:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-02 12:10:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2018-10-02 12:10:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-02 12:10:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-10-02 12:10:27,337 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2018-10-02 12:10:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:27,337 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-10-02 12:10:27,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:10:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-10-02 12:10:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-02 12:10:27,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:27,338 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 1, 1, 1, 1, 1] [2018-10-02 12:10:27,338 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:27,338 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:27,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1835041505, now seen corresponding path program 71 times [2018-10-02 12:10:27,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:27,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:27,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:27,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:27,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:28,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:28,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:28,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:28,361 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:10:28,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:28,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:28,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:28,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:10:28,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:10:28,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:10:28,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:28,678 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 76 states. [2018-10-02 12:10:34,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:34,635 INFO L93 Difference]: Finished difference Result 346 states and 350 transitions. [2018-10-02 12:10:34,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:10:34,635 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 187 [2018-10-02 12:10:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:34,636 INFO L225 Difference]: With dead ends: 346 [2018-10-02 12:10:34,636 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:10:34,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:10:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:10:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:10:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:10:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-02 12:10:34,660 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 187 [2018-10-02 12:10:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:34,660 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-02 12:10:34,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:10:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-02 12:10:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:10:34,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:34,661 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1, 1] [2018-10-02 12:10:34,661 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:34,661 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1521017350, now seen corresponding path program 72 times [2018-10-02 12:10:34,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:34,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:34,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:34,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:35,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:35,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:35,054 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:35,182 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:10:35,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:35,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:35,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:35,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:10:35,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:10:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:10:35,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:35,511 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 40 states. [2018-10-02 12:10:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:36,186 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2018-10-02 12:10:36,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:10:36,186 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 188 [2018-10-02 12:10:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:36,187 INFO L225 Difference]: With dead ends: 205 [2018-10-02 12:10:36,187 INFO L226 Difference]: Without dead ends: 199 [2018-10-02 12:10:36,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:10:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-02 12:10:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-10-02 12:10:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-02 12:10:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-02 12:10:36,211 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 188 [2018-10-02 12:10:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:36,211 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-02 12:10:36,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:10:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-02 12:10:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-02 12:10:36,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:36,213 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 1, 1, 1, 1, 1] [2018-10-02 12:10:36,213 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:36,213 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:36,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1787388540, now seen corresponding path program 73 times [2018-10-02 12:10:36,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:36,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:36,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:36,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:36,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:37,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:37,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:38,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:38,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:10:38,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:10:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:10:38,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:38,110 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 78 states. [2018-10-02 12:10:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:44,028 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-10-02 12:10:44,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:10:44,028 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 192 [2018-10-02 12:10:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:44,029 INFO L225 Difference]: With dead ends: 355 [2018-10-02 12:10:44,029 INFO L226 Difference]: Without dead ends: 196 [2018-10-02 12:10:44,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:10:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-02 12:10:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-02 12:10:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-02 12:10:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-10-02 12:10:44,052 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 192 [2018-10-02 12:10:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:44,052 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-10-02 12:10:44,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:10:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-10-02 12:10:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-02 12:10:44,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:44,053 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1, 1] [2018-10-02 12:10:44,053 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:44,053 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1861088757, now seen corresponding path program 74 times [2018-10-02 12:10:44,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:44,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:44,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:44,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:44,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:44,434 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:44,520 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:44,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:44,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:44,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:10:44,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:10:44,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:10:44,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:44,844 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 41 states. [2018-10-02 12:10:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:45,523 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2018-10-02 12:10:45,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:10:45,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 193 [2018-10-02 12:10:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:45,524 INFO L225 Difference]: With dead ends: 210 [2018-10-02 12:10:45,524 INFO L226 Difference]: Without dead ends: 204 [2018-10-02 12:10:45,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:10:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-02 12:10:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2018-10-02 12:10:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-02 12:10:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-10-02 12:10:45,542 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 193 [2018-10-02 12:10:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:45,542 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-10-02 12:10:45,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:10:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-10-02 12:10:45,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-02 12:10:45,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:45,543 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 1, 1, 1, 1, 1] [2018-10-02 12:10:45,543 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:45,543 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash -315300117, now seen corresponding path program 75 times [2018-10-02 12:10:45,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:45,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:45,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:45,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:46,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:46,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:46,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:46,641 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-02 12:10:46,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:46,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:46,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:47,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:10:47,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:10:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:10:47,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:47,001 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 80 states. [2018-10-02 12:10:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:53,582 INFO L93 Difference]: Finished difference Result 364 states and 368 transitions. [2018-10-02 12:10:53,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:10:53,583 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 197 [2018-10-02 12:10:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:53,584 INFO L225 Difference]: With dead ends: 364 [2018-10-02 12:10:53,584 INFO L226 Difference]: Without dead ends: 201 [2018-10-02 12:10:53,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:10:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-02 12:10:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-02 12:10:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-02 12:10:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-02 12:10:53,608 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 197 [2018-10-02 12:10:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:53,609 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-02 12:10:53,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:10:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-02 12:10:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-02 12:10:53,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:53,610 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1, 1] [2018-10-02 12:10:53,610 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:53,610 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1372678382, now seen corresponding path program 76 times [2018-10-02 12:10:53,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:53,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:53,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:53,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:53,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:54,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:54,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:54,148 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:54,242 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:54,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:54,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:54,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:54,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:10:54,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:10:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:10:54,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:54,593 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 42 states. [2018-10-02 12:10:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:55,423 INFO L93 Difference]: Finished difference Result 215 states and 218 transitions. [2018-10-02 12:10:55,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:10:55,428 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 198 [2018-10-02 12:10:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:55,429 INFO L225 Difference]: With dead ends: 215 [2018-10-02 12:10:55,429 INFO L226 Difference]: Without dead ends: 209 [2018-10-02 12:10:55,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime [2018-10-02 12:10:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-02 12:10:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2018-10-02 12:10:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-02 12:10:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-02 12:10:55,454 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 198 [2018-10-02 12:10:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:55,454 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-02 12:10:55,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:10:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-02 12:10:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-02 12:10:55,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:55,456 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 1, 1, 1, 1, 1] [2018-10-02 12:10:55,456 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:55,456 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1792389512, now seen corresponding path program 77 times [2018-10-02 12:10:55,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:55,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:55,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:55,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:55,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:56,457 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:56,463 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:56,610 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-02 12:10:56,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:56,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:56,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:10:56,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:10:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:10:56,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:56,956 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 82 states. [2018-10-02 12:11:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:04,156 INFO L93 Difference]: Finished difference Result 373 states and 377 transitions. [2018-10-02 12:11:04,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:11:04,156 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 202 [2018-10-02 12:11:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:04,157 INFO L225 Difference]: With dead ends: 373 [2018-10-02 12:11:04,157 INFO L226 Difference]: Without dead ends: 206 [2018-10-02 12:11:04,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime [2018-10-02 12:11:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-02 12:11:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-02 12:11:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-02 12:11:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2018-10-02 12:11:04,183 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 202 [2018-10-02 12:11:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:04,183 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2018-10-02 12:11:04,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:11:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2018-10-02 12:11:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-02 12:11:04,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:04,185 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1, 1] [2018-10-02 12:11:04,185 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:04,185 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash -185138751, now seen corresponding path program 78 times [2018-10-02 12:11:04,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:04,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:04,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:04,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:04,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:04,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:04,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:04,566 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:04,692 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-02 12:11:04,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:04,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:05,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:05,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:11:05,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:11:05,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:11:05,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:05,038 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand 43 states. [2018-10-02 12:11:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:05,898 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2018-10-02 12:11:05,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:11:05,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2018-10-02 12:11:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:05,906 INFO L225 Difference]: With dead ends: 220 [2018-10-02 12:11:05,906 INFO L226 Difference]: Without dead ends: 214 [2018-10-02 12:11:05,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:11:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-02 12:11:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2018-10-02 12:11:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-02 12:11:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2018-10-02 12:11:05,932 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 203 [2018-10-02 12:11:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:05,932 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2018-10-02 12:11:05,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:11:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2018-10-02 12:11:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-02 12:11:05,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:05,933 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 1, 1, 1, 1, 1] [2018-10-02 12:11:05,934 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:05,934 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -319083337, now seen corresponding path program 79 times [2018-10-02 12:11:05,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:05,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:05,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:05,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:05,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:07,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:07,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:07,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:07,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:07,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:07,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:11:07,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:11:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:11:07,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:07,749 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand 84 states. [2018-10-02 12:11:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:14,578 INFO L93 Difference]: Finished difference Result 382 states and 386 transitions. [2018-10-02 12:11:14,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:11:14,578 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 207 [2018-10-02 12:11:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:14,579 INFO L225 Difference]: With dead ends: 382 [2018-10-02 12:11:14,579 INFO L226 Difference]: Without dead ends: 211 [2018-10-02 12:11:14,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.4s impTime [2018-10-02 12:11:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-02 12:11:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-02 12:11:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-02 12:11:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-02 12:11:14,598 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 207 [2018-10-02 12:11:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:14,598 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-02 12:11:14,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:11:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-02 12:11:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-02 12:11:14,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:14,599 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1, 1] [2018-10-02 12:11:14,600 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:14,600 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:14,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1953503262, now seen corresponding path program 80 times [2018-10-02 12:11:14,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:14,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:14,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:14,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:14,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:15,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:15,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:15,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:15,126 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:15,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:15,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:15,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:15,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:11:15,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:11:15,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:11:15,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:15,482 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 44 states. [2018-10-02 12:11:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:16,231 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-10-02 12:11:16,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:11:16,231 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 208 [2018-10-02 12:11:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:16,232 INFO L225 Difference]: With dead ends: 225 [2018-10-02 12:11:16,232 INFO L226 Difference]: Without dead ends: 219 [2018-10-02 12:11:16,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:11:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-02 12:11:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-10-02 12:11:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-02 12:11:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-02 12:11:16,252 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 208 [2018-10-02 12:11:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:16,252 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-02 12:11:16,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:11:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-02 12:11:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-02 12:11:16,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:16,253 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 1, 1, 1, 1, 1] [2018-10-02 12:11:16,253 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:16,253 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1125633172, now seen corresponding path program 81 times [2018-10-02 12:11:16,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:16,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:16,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:16,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:16,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:17,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:17,062 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:17,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:17,224 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-02 12:11:17,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:17,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:17,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:17,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:11:17,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:11:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:11:17,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:17,590 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 86 states. Received shutdown request... [2018-10-02 12:11:18,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:11:18,007 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:11:18,014 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:11:18,014 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:11:18 BoogieIcfgContainer [2018-10-02 12:11:18,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:11:18,015 INFO L168 Benchmark]: Toolchain (without parser) took 236981.20 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 209.9 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:18,017 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:18,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:18,018 INFO L168 Benchmark]: Boogie Preprocessor took 25.97 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:18,019 INFO L168 Benchmark]: RCFGBuilder took 362.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:18,020 INFO L168 Benchmark]: TraceAbstraction took 236541.83 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 188.8 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:18,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.97 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 362.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236541.83 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 188.8 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (215states) and FLOYD_HOARE automaton (currently 45 states, 86 states before enhancement), while ReachableStatesComputation was computing reachable states (46 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 85 OverallIterations, 42 TraceHistogramMax, 153.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2073 SDtfs, 5090 SDslu, 38495 SDs, 0 SdLazy, 41757 SolverSat, 1085 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13411 GetRequests, 9837 SyntacticMatches, 0 SemanticMatches, 3574 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=84, 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: 1.0s AutomataMinimizationTime, 84 MinimizatonAttempts, 170 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 71.0s InterpolantComputationTime, 18054 NumberOfCodeBlocks, 18054 NumberOfCodeBlocksAsserted, 1040 NumberOfCheckSat, 17888 ConstructedInterpolants, 0 QuantifiedInterpolants, 7444064 SizeOfPredicates, 163 NumberOfNonLiveVariables, 28716 ConjunctsInSsa, 3646 ConjunctsInUnsatCore, 166 InterpolantComputations, 4 PerfectInterpolantSequences, 126690/239932 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/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-11-18-034.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-11-18-034.csv Completed graceful shutdown