java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:10:35,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:10:35,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:10:35,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:10:35,890 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:10:35,891 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:10:35,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:10:35,896 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:10:35,898 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:10:35,904 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:10:35,905 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-02 12:10:35,906 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-02 12:10:35,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-02 12:10:35,911 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-02 12:10:35,912 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-02 12:10:35,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-02 12:10:35,913 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-02 12:10:35,915 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-02 12:10:35,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-02 12:10:35,918 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-02 12:10:35,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-02 12:10:35,922 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-02 12:10:35,925 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-02 12:10:35,940 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 12:10:35,966 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:10:35,967 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:10:35,970 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:10:35,971 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:10:35,971 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:10:35,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:10:35,972 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:10:35,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:10:35,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:10:35,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:10:35,974 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:10:35,974 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:10:35,974 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:10:35,974 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:10:35,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:10:35,975 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:10:35,975 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:10:35,975 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:10:35,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:10:35,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:10:35,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:10:35,976 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:10:35,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:10:35,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:10:35,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:10:35,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:10:35,977 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:10:35,977 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:10:35,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:10:35,977 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:10:35,977 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:10:36,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:10:36,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:10:36,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:10:36,069 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:10:36,069 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:10:36,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-10-02 12:10:36,070 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-10-02 12:10:36,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:10:36,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:10:36,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:10:36,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:10:36,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:10:36,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:10:36,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:10:36,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:10:36,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:10:36,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/1) ... [2018-10-02 12:10:36,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:10:36,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:10:36,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:10:36,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:10:36,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (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 12:10:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:10:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:10:36,497 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:10:36,498 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:10:36 BoogieIcfgContainer [2018-10-02 12:10:36,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:10:36,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:10:36,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:10:36,502 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:10:36,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:10:36" (1/2) ... [2018-10-02 12:10:36,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231647be and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:10:36, skipping insertion in model container [2018-10-02 12:10:36,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:10:36" (2/2) ... [2018-10-02 12:10:36,506 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-10-02 12:10:36,516 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:10:36,524 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:10:36,573 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:10:36,574 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:10:36,574 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:10:36,574 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:10:36,574 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:10:36,575 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:10:36,575 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:10:36,575 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:10:36,575 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:10:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-02 12:10:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:10:36,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:36,598 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:10:36,599 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:36,606 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-02 12:10:36,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:36,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:36,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:36,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:36,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:36,785 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 12:10:36,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:10:36,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:10:36,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:10:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:10:36,808 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:36,810 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-02 12:10:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:36,950 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-02 12:10:36,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:10:36,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-02 12:10:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:36,965 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:10:36,965 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:10:36,968 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 12:10:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:10:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:10:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:10:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 12:10:37,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-02 12:10:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:37,015 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 12:10:37,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:10:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 12:10:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:10:37,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:37,016 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-02 12:10:37,016 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:37,016 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-02 12:10:37,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:37,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:37,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:37,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:37,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:37,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:37,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:10:37,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:10:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:10:37,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:37,215 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-02 12:10:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:37,285 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:10:37,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:10:37,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-02 12:10:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:37,287 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:10:37,287 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:10:37,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:10:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:10:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:10:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:10:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 12:10:37,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-02 12:10:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:37,291 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 12:10:37,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:10:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 12:10:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:10:37,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:37,295 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-02 12:10:37,295 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:37,295 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-02 12:10:37,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:37,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:37,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:37,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:37,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:37,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:37,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:37,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:37,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:37,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:10:37,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:10:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:10:37,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:37,512 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-02 12:10:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:37,758 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:10:37,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:10:37,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-02 12:10:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:37,760 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:10:37,760 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:10:37,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:10:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:10:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:10:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:10:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:10:37,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-02 12:10:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:37,764 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:10:37,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:10:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:10:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:10:37,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:37,766 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-02 12:10:37,766 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:37,766 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-02 12:10:37,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:37,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:37,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:37,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:37,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:37,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:37,952 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:10:37,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:37,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:38,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:38,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:10:38,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:10:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:10:38,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:38,042 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-02 12:10:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:38,209 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 12:10:38,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:10:38,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-02 12:10:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:38,211 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:10:38,211 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:10:38,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:10:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:10:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:10:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 12:10:38,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-02 12:10:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:38,216 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 12:10:38,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:10:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 12:10:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:10:38,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:38,217 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-02 12:10:38,217 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:38,218 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:38,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-02 12:10:38,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:38,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:38,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:38,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:38,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:38,363 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 12:10:38,380 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:38,404 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:38,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:38,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:38,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:38,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:10:38,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:10:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:10:38,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:38,498 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-02 12:10:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:38,620 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:10:38,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:10:38,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-02 12:10:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:38,621 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:10:38,621 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:10:38,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:10:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:10:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:10:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:10:38,626 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-02 12:10:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:38,626 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:10:38,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:10:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:10:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:10:38,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:38,627 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-02 12:10:38,628 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:38,628 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-02 12:10:38,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:38,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:38,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:38,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:38,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:38,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:38,933 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:39,036 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:10:39,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:39,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:39,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:39,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:10:39,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:10:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:10:39,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:39,298 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-02 12:10:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:39,488 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-02 12:10:39,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:10:39,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-02 12:10:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:39,490 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:10:39,490 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:10:39,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:10:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:10:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-02 12:10:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-02 12:10:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-02 12:10:39,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-02 12:10:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:39,495 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-02 12:10:39,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:10:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-02 12:10:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-02 12:10:39,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:39,497 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-02 12:10:39,497 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:39,497 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-02 12:10:39,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:39,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:39,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:39,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:39,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:39,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:39,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:39,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:39,666 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:10:39,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:39,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:39,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:39,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:10:39,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:10:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:10:39,810 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:39,810 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-02 12:10:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:39,933 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:10:39,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:10:39,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-02 12:10:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:39,936 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:10:39,936 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:10:39,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:10:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:10:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:10:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:10:39,942 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-02 12:10:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:39,942 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:10:39,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:10:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:10:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:10:39,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:39,943 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-02 12:10:39,944 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:39,944 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-02 12:10:39,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:39,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:39,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:39,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:39,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:40,087 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 12:10:40,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:40,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:40,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:10:40,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:10:40,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:10:40,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:40,229 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-02 12:10:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:40,327 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-02 12:10:40,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:10:40,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-02 12:10:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:40,329 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:10:40,329 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:10:40,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:10:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:10:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:10:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-02 12:10:40,334 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-02 12:10:40,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:40,334 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-02 12:10:40,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:10:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-02 12:10:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:10:40,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:40,335 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-02 12:10:40,336 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:40,336 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-02 12:10:40,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:40,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:40,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:40,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:40,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:40,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:40,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:40,566 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:40,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:40,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:40,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:10:40,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:10:40,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:10:40,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:40,662 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-02 12:10:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:40,774 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:10:40,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:10:40,775 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-02 12:10:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:40,776 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:10:40,776 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:10:40,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:10:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:10:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:10:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:10:40,783 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-02 12:10:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:40,783 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:10:40,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:10:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:10:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:10:40,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:40,784 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-02 12:10:40,785 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:40,785 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:40,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-02 12:10:40,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:40,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:40,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:40,946 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 12:10:40,957 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:40,989 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-02 12:10:40,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:40,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:41,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:41,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:10:41,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:10:41,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:10:41,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:41,085 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-02 12:10:41,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:41,208 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-02 12:10:41,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:10:41,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-02 12:10:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:41,211 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:10:41,211 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:10:41,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:10:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:10:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:10:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:10:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-02 12:10:41,216 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-02 12:10:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:41,216 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-02 12:10:41,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:10:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-02 12:10:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:10:41,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:41,217 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-02 12:10:41,217 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:41,217 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:41,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-02 12:10:41,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:41,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:41,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:41,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:41,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:41,406 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:41,433 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:41,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:41,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:41,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:41,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:10:41,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:10:41,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:10:41,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:41,554 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-02 12:10:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:41,631 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:10:41,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:10:41,631 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-02 12:10:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:41,633 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:10:41,633 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:10:41,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:10:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:10:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:10:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:10:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:10:41,639 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-02 12:10:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:41,639 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:10:41,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:10:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:10:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:10:41,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:41,640 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-02 12:10:41,641 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:41,641 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-02 12:10:41,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:41,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:41,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:41,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:41,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:42,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:42,149 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 12:10:42,156 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:42,190 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-02 12:10:42,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:42,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:42,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:42,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:10:42,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:10:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:10:42,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:42,299 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-02 12:10:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:42,524 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-02 12:10:42,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:10:42,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-02 12:10:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:42,527 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:10:42,527 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:10:42,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:10:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:10:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:10:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:10:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-02 12:10:42,532 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-02 12:10:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:42,532 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-02 12:10:42,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:10:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-02 12:10:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:10:42,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:42,533 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-02 12:10:42,533 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:42,533 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-02 12:10:42,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:42,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:42,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:42,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:42,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:42,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:42,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:42,722 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:42,753 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:10:42,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:42,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:42,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:42,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:10:42,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:10:42,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:10:42,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:42,944 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-02 12:10:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:43,041 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:10:43,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:10:43,044 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-02 12:10:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:43,045 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:10:43,045 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:10:43,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:10:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:10:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:10:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:10:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:10:43,051 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-02 12:10:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:43,051 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:10:43,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:10:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:10:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:10:43,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:43,053 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-02 12:10:43,053 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:43,053 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:43,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-02 12:10:43,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:43,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:43,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:43,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:43,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:43,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:43,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:43,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:43,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:43,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:43,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:10:43,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:10:43,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:10:43,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:43,711 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-02 12:10:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:43,905 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-02 12:10:43,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:10:43,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-02 12:10:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:43,908 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:10:43,909 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:10:43,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:10:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:10:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:10:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:10:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-02 12:10:43,914 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-02 12:10:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:43,914 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-02 12:10:43,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:10:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-02 12:10:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:10:43,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:43,915 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-02 12:10:43,916 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:43,916 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-02 12:10:43,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:43,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:43,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:43,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:43,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:44,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:44,181 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:44,218 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:44,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:44,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:44,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:10:44,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:10:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:10:44,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:44,481 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-02 12:10:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:44,614 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:10:44,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:10:44,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-02 12:10:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:44,616 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:10:44,616 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:10:44,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:10:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:10:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:10:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:10:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:10:44,622 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-02 12:10:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:44,622 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:10:44,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:10:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:10:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:10:44,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:44,623 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-02 12:10:44,624 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:44,624 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:44,624 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-02 12:10:44,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:44,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:44,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:44,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:44,883 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 12:10:44,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:44,928 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-02 12:10:44,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:44,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:45,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:45,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:10:45,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:10:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:10:45,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:45,058 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-02 12:10:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:45,179 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-02 12:10:45,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:10:45,182 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-02 12:10:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:45,182 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:10:45,183 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:10:45,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:10:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:10:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:10:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:10:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-02 12:10:45,188 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-02 12:10:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:45,188 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-02 12:10:45,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:10:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-02 12:10:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:10:45,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:45,189 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-02 12:10:45,189 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:45,190 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-02 12:10:45,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:45,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:45,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:45,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:45,840 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:45,866 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:45,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:45,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:46,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:46,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:10:46,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:10:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:10:46,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:46,186 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-02 12:10:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:46,366 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:10:46,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:10:46,367 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-02 12:10:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:46,368 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:10:46,368 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:10:46,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime [2018-10-02 12:10:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:10:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:10:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:10:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:10:46,376 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-02 12:10:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:46,376 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:10:46,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:10:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:10:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:10:46,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:46,377 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-02 12:10:46,377 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:46,378 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:46,378 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-02 12:10:46,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:46,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:46,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:46,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:46,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:47,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:47,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:47,385 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:47,422 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-02 12:10:47,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:47,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:47,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:47,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:10:47,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:10:47,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:10:47,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:47,511 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-02 12:10:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:47,639 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-02 12:10:47,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:10:47,640 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-02 12:10:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:47,640 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:10:47,640 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:10:47,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:10:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:10:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:10:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:10:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-02 12:10:47,647 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-02 12:10:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:47,647 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-02 12:10:47,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:10:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-02 12:10:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:10:47,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:47,648 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-02 12:10:47,649 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:47,649 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:47,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-02 12:10:47,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:47,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:47,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:47,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:47,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:48,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:48,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:48,202 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:48,243 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:10:48,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:48,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:48,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:48,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:10:48,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:10:48,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:10:48,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:48,879 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-02 12:10:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:49,034 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:10:49,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:10:49,035 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-02 12:10:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:49,035 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:10:49,036 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:10:49,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.3s impTime [2018-10-02 12:10:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:10:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:10:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:10:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:10:49,039 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-02 12:10:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:49,039 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:10:49,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:10:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:10:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:10:49,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:49,040 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-02 12:10:49,040 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:49,041 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-02 12:10:49,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:49,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:49,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:49,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:49,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:49,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:49,927 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 12:10:49,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:49,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:50,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:50,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:10:50,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:10:50,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:10:50,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:50,172 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-02 12:10:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:50,350 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-02 12:10:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:10:50,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-02 12:10:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:50,351 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:10:50,352 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:10:50,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:10:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:10:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:10:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:10:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-02 12:10:50,360 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-02 12:10:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:50,360 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-02 12:10:50,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:10:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-02 12:10:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:10:50,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:50,361 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-02 12:10:50,361 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:50,362 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-02 12:10:50,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:50,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:50,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:50,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:50,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:50,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:50,710 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:50,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:50,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:50,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:50,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:50,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:50,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:10:50,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:10:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:10:50,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:50,922 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-02 12:10:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:51,093 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:10:51,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:10:51,094 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-02 12:10:51,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:51,095 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:10:51,095 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:10:51,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:10:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:10:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:10:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:10:51,099 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-02 12:10:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:51,099 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:10:51,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:10:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:10:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:10:51,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:51,100 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-02 12:10:51,101 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:51,101 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-02 12:10:51,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:51,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:51,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:51,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:51,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:51,489 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 12:10:51,498 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:51,545 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-02 12:10:51,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:51,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:51,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:51,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:10:51,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:10:51,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:10:51,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:51,686 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-02 12:10:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:51,863 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-02 12:10:51,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:10:51,866 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-02 12:10:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:51,867 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:10:51,868 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:10:51,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:10:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:10:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:10:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-02 12:10:51,875 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-02 12:10:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:51,875 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-02 12:10:51,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:10:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-02 12:10:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:10:51,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:51,876 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-02 12:10:51,876 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:51,876 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-02 12:10:51,877 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:51,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:51,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:51,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:52,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:52,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:52,429 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:52,475 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:52,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:52,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:52,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:52,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:10:52,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:10:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:10:52,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:52,637 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-02 12:10:52,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:52,773 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:10:52,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:10:52,773 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-02 12:10:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:52,774 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:10:52,775 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:10:52,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:10:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:10:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:10:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:10:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:10:52,781 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-02 12:10:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:52,781 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:10:52,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:10:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:10:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:10:52,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:52,782 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-02 12:10:52,782 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:52,782 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-02 12:10:52,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:52,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:52,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:52,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:52,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:53,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:53,188 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 12:10:53,196 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:53,248 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-02 12:10:53,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:53,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:53,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:53,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:10:53,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:10:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:10:53,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:53,561 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-02 12:10:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:53,686 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-02 12:10:53,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:10:53,686 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-02 12:10:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:53,687 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:10:53,687 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:10:53,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:10:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:10:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:10:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:10:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-02 12:10:53,691 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-02 12:10:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:53,692 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-02 12:10:53,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:10:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-02 12:10:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:10:53,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:53,692 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-02 12:10:53,692 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:53,693 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-02 12:10:53,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:53,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:53,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:53,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:53,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:54,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:54,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:54,421 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:54,467 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:10:54,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:54,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:54,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:54,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:10:54,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:10:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 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 53 states and 53 transitions. Second operand 27 states. [2018-10-02 12:10:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:54,733 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-02 12:10:54,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:10:54,734 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-02 12:10:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:54,735 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:10:54,735 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:10:54,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:10:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:10:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:10:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:10:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-02 12:10:54,741 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-02 12:10:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:54,741 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-02 12:10:54,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:10:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-02 12:10:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:10:54,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:54,742 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-02 12:10:54,743 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:54,743 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:54,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-02 12:10:54,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:54,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:54,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:54,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:55,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:55,149 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 12:10:55,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:55,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:55,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:55,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:10:55,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:10:55,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:10:55,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:55,360 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-02 12:10:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:55,533 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-02 12:10:55,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:10:55,533 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-02 12:10:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:55,534 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:10:55,534 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:10:55,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:10:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-02 12:10:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-02 12:10:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-02 12:10:55,539 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-02 12:10:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:55,539 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-02 12:10:55,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:10:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-02 12:10:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:10:55,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:55,540 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-02 12:10:55,541 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:55,541 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-02 12:10:55,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:55,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:55,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:55,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:55,964 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:55,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:55,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:56,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:10:56,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:10:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:10:56,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:56,099 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-02 12:10:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:56,284 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-02 12:10:56,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:10:56,284 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-02 12:10:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:56,285 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:10:56,285 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:10:56,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:10:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:10:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:10:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-02 12:10:56,290 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-02 12:10:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:56,290 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-02 12:10:56,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:10:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-02 12:10:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:10:56,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:56,291 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-02 12:10:56,292 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:56,292 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-02 12:10:56,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:56,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:56,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:56,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:56,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:56,706 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 12:10:56,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:56,782 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-02 12:10:56,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:56,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:56,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:10:56,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:10:56,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:10:56,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:56,976 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-02 12:10:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:57,196 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-02 12:10:57,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:10:57,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-02 12:10:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:57,197 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:10:57,197 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:10:57,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:10:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:10:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:10:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-02 12:10:57,200 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-02 12:10:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:57,200 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-02 12:10:57,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:10:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-02 12:10:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-02 12:10:57,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:57,201 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-02 12:10:57,201 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:57,201 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-02 12:10:57,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:57,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:57,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:57,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:57,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:58,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:58,629 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 12:10:58,636 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:58,681 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:58,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:58,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:58,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:58,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:10:58,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:10:58,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:10:58,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:58,874 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-02 12:10:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:59,144 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-02 12:10:59,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:10:59,144 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-02 12:10:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:59,145 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:10:59,145 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:10:59,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:10:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:10:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:10:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:10:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-02 12:10:59,149 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-02 12:10:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:59,149 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-02 12:10:59,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:10:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-02 12:10:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:10:59,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:59,150 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-02 12:10:59,151 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:59,151 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-02 12:10:59,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:59,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:59,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:59,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:59,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:59,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:59,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:10:59,569 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:59,640 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-02 12:10:59,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:59,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:59,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:59,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:10:59,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:10:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:10:59,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:59,780 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-02 12:10:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:59,931 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-02 12:10:59,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:10:59,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-02 12:10:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:59,933 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:10:59,933 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:10:59,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:10:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:10:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:10:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:10:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-02 12:10:59,937 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-02 12:10:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:59,937 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-02 12:10:59,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:10:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-02 12:10:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-02 12:10:59,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:59,938 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-02 12:10:59,938 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:59,938 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-02 12:10:59,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:59,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:59,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:59,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:59,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:01,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:01,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:01,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:01,265 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:11:01,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:01,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:01,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:01,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:11:01,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:11:01,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:11:01,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:01,433 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-02 12:11:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:01,560 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-02 12:11:01,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:11:01,560 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-02 12:11:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:01,561 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:11:01,561 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:11:01,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:11:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:11:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:11:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:11:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-02 12:11:01,565 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-02 12:11:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:01,565 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-02 12:11:01,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:11:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-02 12:11:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:11:01,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:01,566 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-02 12:11:01,566 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:01,567 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-02 12:11:01,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:01,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:01,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:01,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:01,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:02,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:02,037 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 12:11:02,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:02,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:02,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:02,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:11:02,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:11:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:11:02,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:02,358 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-02 12:11:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:02,612 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-02 12:11:02,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:11:02,612 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-02 12:11:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:02,613 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:11:02,613 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:11:02,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:11:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:11:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-02 12:11:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:11:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-02 12:11:02,617 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-02 12:11:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:02,617 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-02 12:11:02,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:11:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-02 12:11:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:11:02,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:02,618 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-02 12:11:02,618 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:02,618 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:02,618 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-02 12:11:02,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:02,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:02,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:03,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:03,995 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 12:11:04,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:04,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:04,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:04,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:04,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:04,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:11:04,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:11:04,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:11:04,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:04,194 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-02 12:11:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:04,399 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-02 12:11:04,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:11:04,400 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-02 12:11:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:04,400 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:11:04,401 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:11:04,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:11:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:11:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:11:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:11:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-02 12:11:04,405 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-02 12:11:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:04,406 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-02 12:11:04,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:11:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-02 12:11:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:11:04,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:04,407 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-02 12:11:04,407 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:04,407 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-02 12:11:04,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:04,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:04,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:04,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:04,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:04,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:04,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:04,818 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:04,883 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-02 12:11:04,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:04,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:05,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:05,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:11:05,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:11:05,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:11:05,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:05,070 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-02 12:11:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:05,245 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-02 12:11:05,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:11:05,246 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-02 12:11:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:05,247 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:11:05,247 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:11:05,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:11:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:11:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:11:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:11:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-02 12:11:05,251 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-02 12:11:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:05,251 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-02 12:11:05,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:11:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-02 12:11:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:11:05,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:05,252 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-02 12:11:05,253 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:05,253 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-02 12:11:05,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:05,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:05,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:05,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:05,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:05,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:05,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:05,702 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:05,759 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:05,759 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:05,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:05,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:05,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:11:05,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:11:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:11:05,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:05,938 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-02 12:11:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:06,207 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-02 12:11:06,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:11:06,208 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-02 12:11:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:06,209 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:11:06,209 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:11:06,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:11:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:11:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:11:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:11:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-02 12:11:06,213 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-02 12:11:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:06,213 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-02 12:11:06,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:11:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-02 12:11:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:11:06,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:06,214 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-02 12:11:06,214 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:06,214 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-02 12:11:06,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:06,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:06,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:06,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:06,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:06,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:06,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:06,898 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:06,975 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-02 12:11:06,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:06,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:07,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:07,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:11:07,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:11:07,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:11:07,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:07,700 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-02 12:11:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:07,962 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-02 12:11:07,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:11:07,963 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-02 12:11:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:07,963 INFO L225 Difference]: With dead ends: 79 [2018-10-02 12:11:07,963 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:11:07,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.4s impTime [2018-10-02 12:11:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:11:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:11:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:11:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-02 12:11:07,966 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-02 12:11:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:07,967 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-02 12:11:07,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:11:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-02 12:11:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:11:07,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:07,968 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-02 12:11:07,968 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:07,968 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-02 12:11:07,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:07,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:07,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:08,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:08,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:08,746 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:08,821 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:11:08,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:08,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:09,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:09,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:11:09,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:11:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:11:09,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:09,010 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-02 12:11:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:09,290 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-02 12:11:09,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:11:09,290 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-02 12:11:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:09,292 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:11:09,292 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:11:09,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:11:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:11:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:11:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:11:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-02 12:11:09,296 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-02 12:11:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:09,296 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-02 12:11:09,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:11:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-02 12:11:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:11:09,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:09,297 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-02 12:11:09,297 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:09,297 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-02 12:11:09,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:09,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:09,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:09,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:09,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:10,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:10,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:10,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:10,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:11,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:11,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:11:11,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:11:11,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:11:11,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:11,164 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-02 12:11:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:11,442 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-02 12:11:11,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:11:11,443 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-02 12:11:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:11,444 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:11:11,444 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:11:11,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime [2018-10-02 12:11:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:11:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:11:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:11:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-02 12:11:11,448 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-02 12:11:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:11,448 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-02 12:11:11,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:11:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-02 12:11:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:11:11,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:11,449 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-02 12:11:11,449 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:11,449 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:11,450 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-02 12:11:11,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:11,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:11,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:11,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:11,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:12,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:12,184 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 12:11:12,191 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:12,253 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:12,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:12,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:12,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:12,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:11:12,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:11:12,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:11:12,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:12,432 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-02 12:11:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:12,756 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-02 12:11:12,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:11:12,756 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-02 12:11:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:12,757 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:11:12,757 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:11:12,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:11:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:11:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:11:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:11:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-02 12:11:12,760 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-02 12:11:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:12,760 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-02 12:11:12,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:11:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-02 12:11:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:11:12,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:12,761 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-02 12:11:12,761 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:12,761 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-02 12:11:12,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:12,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:12,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:12,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:12,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:13,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:13,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:13,334 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:13,419 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-02 12:11:13,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:13,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:13,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:13,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:11:13,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:11:13,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:11:13,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:13,588 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-02 12:11:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:13,815 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-02 12:11:13,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:11:13,815 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-02 12:11:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:13,816 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:11:13,816 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:11:13,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:11:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:11:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:11:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:11:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-02 12:11:13,819 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-02 12:11:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:13,819 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-02 12:11:13,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:11:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-02 12:11:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:11:13,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:13,820 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-02 12:11:13,820 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:13,820 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-02 12:11:13,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:13,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:13,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:13,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:13,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:14,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:14,777 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 12:11:14,785 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:14,851 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:14,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:14,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:15,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:15,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:11:15,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:11:15,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:11:15,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:15,047 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-02 12:11:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:15,412 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-02 12:11:15,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:11:15,412 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-02 12:11:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:15,413 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:11:15,413 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:11:15,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:11:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:11:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:11:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:11:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-02 12:11:15,417 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-02 12:11:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:15,418 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-02 12:11:15,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:11:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-02 12:11:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:11:15,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:15,418 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-02 12:11:15,419 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:15,419 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:15,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-02 12:11:15,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:15,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:15,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:15,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:15,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:16,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:16,383 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 12:11:16,390 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:16,495 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-02 12:11:16,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:16,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:16,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:16,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:11:16,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:11:16,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:11:16,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:16,717 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-02 12:11:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:16,997 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-02 12:11:16,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:11:16,997 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-02 12:11:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:16,998 INFO L225 Difference]: With dead ends: 91 [2018-10-02 12:11:16,998 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:11:16,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:11:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:11:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-02 12:11:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:11:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-02 12:11:17,002 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-02 12:11:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:17,003 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-02 12:11:17,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:11:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-02 12:11:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:11:17,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:17,003 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-02 12:11:17,004 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:17,004 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:17,004 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-02 12:11:17,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:17,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:17,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:17,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:17,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:18,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:18,105 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:18,113 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:18,204 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:11:18,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:18,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:18,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:18,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-02 12:11:18,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:11:18,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:11:18,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:18,382 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-02 12:11:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:18,552 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-02 12:11:18,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:11:18,552 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-02 12:11:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:18,553 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:11:18,553 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:11:18,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:11:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:11:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:11:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:11:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-02 12:11:18,557 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-02 12:11:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:18,557 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-02 12:11:18,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:11:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-02 12:11:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:11:18,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:18,558 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-02 12:11:18,558 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:18,558 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-02 12:11:18,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:18,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:18,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:18,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:18,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:19,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:19,998 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 12:11:20,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:20,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:20,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:20,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:11:20,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:11:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:11:20,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:20,267 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-02 12:11:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:20,561 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-02 12:11:20,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:11:20,561 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-02 12:11:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:20,562 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:11:20,562 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:11:20,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:11:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:11:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:11:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:11:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-02 12:11:20,566 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-02 12:11:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:20,567 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-02 12:11:20,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:11:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-02 12:11:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:11:20,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:20,567 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-02 12:11:20,567 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:20,567 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-02 12:11:20,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:20,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:20,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:20,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:20,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:21,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:21,315 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:21,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:21,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:21,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:21,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:21,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:21,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:11:21,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:11:21,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:11:21,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:21,803 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-02 12:11:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:22,204 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-02 12:11:22,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:11:22,204 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-02 12:11:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:22,205 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:11:22,205 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:11:22,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime [2018-10-02 12:11:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:11:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:11:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:11:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-02 12:11:22,210 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-02 12:11:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:22,210 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-02 12:11:22,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:11:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-02 12:11:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:11:22,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:22,211 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-02 12:11:22,211 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:22,211 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-02 12:11:22,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:22,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:22,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:22,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:22,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:23,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:23,128 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 12:11:23,137 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:23,286 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-02 12:11:23,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:23,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:23,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:23,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:11:23,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:11:23,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:11:23,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:23,520 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-02 12:11:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:23,767 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-02 12:11:23,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:11:23,767 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-02 12:11:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:23,769 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:11:23,769 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:11:23,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:11:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:11:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:11:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:11:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-02 12:11:23,773 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-02 12:11:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:23,774 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-02 12:11:23,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:11:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-02 12:11:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-02 12:11:23,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:23,774 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-02 12:11:23,775 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:23,775 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:23,775 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-02 12:11:23,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:23,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:23,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:23,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:23,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:25,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:25,061 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 12:11:25,069 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:25,146 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:25,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:25,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:26,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:26,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-02 12:11:26,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:11:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:11:26,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:26,469 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-02 12:11:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:26,779 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-02 12:11:26,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:11:26,779 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-02 12:11:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:26,780 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:11:26,781 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:11:26,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.0s impTime [2018-10-02 12:11:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:11:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:11:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:11:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-02 12:11:26,785 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-02 12:11:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:26,785 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-02 12:11:26,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:11:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-02 12:11:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:11:26,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:26,786 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-02 12:11:26,786 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:26,787 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-02 12:11:26,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:26,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:26,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:27,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:27,560 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 12:11:27,567 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:27,674 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-02 12:11:27,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:27,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:27,942 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:27,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:11:27,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:11:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:11:27,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:27,943 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-02 12:11:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:28,312 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-02 12:11:28,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:11:28,313 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-02 12:11:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:28,314 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:11:28,314 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:11:28,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:11:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:11:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:11:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:11:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-02 12:11:28,319 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-02 12:11:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:28,319 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-02 12:11:28,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:11:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-02 12:11:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:11:28,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:28,320 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-02 12:11:28,320 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:28,321 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-02 12:11:28,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:28,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:28,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:28,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:28,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:29,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:29,112 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 12:11:29,119 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:29,231 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:11:29,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:29,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:29,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:29,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-02 12:11:29,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:11:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:11:29,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:29,420 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-02 12:11:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:29,686 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-02 12:11:29,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:11:29,686 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-02 12:11:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:29,687 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:11:29,687 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:11:29,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:11:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:11:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:11:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:11:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-02 12:11:29,692 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-02 12:11:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:29,693 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-02 12:11:29,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:11:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-02 12:11:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:11:29,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:29,693 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-02 12:11:29,694 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:29,694 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-02 12:11:29,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:29,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:29,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:29,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:29,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:30,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:30,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:30,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:30,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:30,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:30,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:11:30,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:11:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:11:30,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:30,795 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-02 12:11:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:31,067 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-02 12:11:31,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:11:31,068 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-02 12:11:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:31,069 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:11:31,069 INFO L226 Difference]: Without dead ends: 105 [2018-10-02 12:11:31,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:11:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-02 12:11:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-02 12:11:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:11:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-02 12:11:31,072 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-02 12:11:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:31,073 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-02 12:11:31,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:11:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-02 12:11:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:11:31,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:31,074 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-02 12:11:31,074 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:31,074 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-02 12:11:31,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:31,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:31,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:31,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:31,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:32,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:32,725 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 12:11:32,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:32,813 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:32,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:32,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:33,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:33,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:11:33,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:11:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:11:33,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:33,172 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-02 12:11:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:33,626 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-02 12:11:33,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:11:33,627 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-02 12:11:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:33,628 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:11:33,628 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:11:33,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:11:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:11:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:11:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:11:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-02 12:11:33,632 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-02 12:11:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:33,632 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-02 12:11:33,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:11:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-02 12:11:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:11:33,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:33,633 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-02 12:11:33,634 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:33,634 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-02 12:11:33,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:33,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:33,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:34,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:34,914 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 12:11:34,921 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:35,040 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-02 12:11:35,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:35,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:35,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:35,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:11:35,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:11:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:11:35,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:35,556 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-02 12:11:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:35,898 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-02 12:11:35,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:11:35,899 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-02 12:11:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:35,900 INFO L225 Difference]: With dead ends: 111 [2018-10-02 12:11:35,900 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:11:35,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime [2018-10-02 12:11:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:11:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-02 12:11:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:11:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-02 12:11:35,903 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-02 12:11:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:35,904 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-02 12:11:35,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:11:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-02 12:11:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:11:35,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:35,904 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-02 12:11:35,905 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:35,905 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:35,905 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-02 12:11:35,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:35,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:35,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:35,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:35,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:37,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:37,200 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 12:11:37,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:37,302 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:37,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:37,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:37,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:37,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:11:37,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:11:37,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:11:37,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:37,513 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-02 12:11:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:37,839 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-02 12:11:37,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:11:37,839 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-02 12:11:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:37,841 INFO L225 Difference]: With dead ends: 113 [2018-10-02 12:11:37,841 INFO L226 Difference]: Without dead ends: 111 [2018-10-02 12:11:37,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:11:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-02 12:11:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-02 12:11:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-02 12:11:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-02 12:11:37,843 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-02 12:11:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:37,844 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-02 12:11:37,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:11:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-02 12:11:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:11:37,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:37,844 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-02 12:11:37,845 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:37,845 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-02 12:11:37,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:37,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:37,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:37,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:37,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:39,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:39,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:39,435 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:39,615 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-02 12:11:39,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:39,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:39,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:39,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:11:39,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:11:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:11:39,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:39,921 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-02 12:11:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:40,138 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-02 12:11:40,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:11:40,138 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-02 12:11:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:40,139 INFO L225 Difference]: With dead ends: 115 [2018-10-02 12:11:40,139 INFO L226 Difference]: Without dead ends: 113 [2018-10-02 12:11:40,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:11:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-02 12:11:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-02 12:11:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-02 12:11:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-02 12:11:40,142 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-02 12:11:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:40,143 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-02 12:11:40,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:11:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-02 12:11:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-02 12:11:40,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:40,144 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-02 12:11:40,144 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:40,144 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:40,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-02 12:11:40,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:40,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:40,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:40,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:40,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:41,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:41,266 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 12:11:41,275 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:41,416 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-02 12:11:41,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:41,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:41,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:41,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-02 12:11:41,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:11:41,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:11:41,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:41,780 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-02 12:11:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:42,991 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-02 12:11:42,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:11:42,992 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-02 12:11:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:42,993 INFO L225 Difference]: With dead ends: 117 [2018-10-02 12:11:42,993 INFO L226 Difference]: Without dead ends: 115 [2018-10-02 12:11:42,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:11:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-02 12:11:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-02 12:11:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:11:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-02 12:11:42,997 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-02 12:11:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:42,997 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-02 12:11:42,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:11:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-02 12:11:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-02 12:11:42,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:42,998 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-02 12:11:42,999 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:42,999 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-02 12:11:42,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:42,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:43,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:43,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:43,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:44,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:44,272 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 12:11:44,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:44,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:45,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:45,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:11:45,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:11:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:11:45,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:45,018 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-02 12:11:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:45,560 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-02 12:11:45,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:11:45,560 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-02 12:11:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:45,561 INFO L225 Difference]: With dead ends: 119 [2018-10-02 12:11:45,561 INFO L226 Difference]: Without dead ends: 117 [2018-10-02 12:11:45,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime [2018-10-02 12:11:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-02 12:11:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-02 12:11:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-02 12:11:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-02 12:11:45,565 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-02 12:11:45,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:45,565 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-02 12:11:45,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:11:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-02 12:11:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-02 12:11:45,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:45,566 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-02 12:11:45,566 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:45,566 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-02 12:11:45,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:45,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:45,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:45,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:45,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:46,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:46,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:46,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:46,908 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:46,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:46,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:48,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:48,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:11:48,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:11:48,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:11:48,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:48,236 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-02 12:11:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:48,806 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-02 12:11:48,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:11:48,807 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-02 12:11:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:48,808 INFO L225 Difference]: With dead ends: 121 [2018-10-02 12:11:48,808 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:11:48,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.0s impTime [2018-10-02 12:11:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:11:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-02 12:11:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:11:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-02 12:11:48,811 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-02 12:11:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:48,811 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-02 12:11:48,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:11:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-02 12:11:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:11:48,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:48,812 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-02 12:11:48,812 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:48,812 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-02 12:11:48,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:48,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:50,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:50,154 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 12:11:50,161 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:50,364 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-02 12:11:50,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:50,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:50,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:50,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:11:50,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:11:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:11:50,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:50,706 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-02 12:11:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:50,945 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-02 12:11:50,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:11:50,946 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-02 12:11:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:50,947 INFO L225 Difference]: With dead ends: 123 [2018-10-02 12:11:50,947 INFO L226 Difference]: Without dead ends: 121 [2018-10-02 12:11:50,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:11:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-02 12:11:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-02 12:11:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-02 12:11:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-02 12:11:50,951 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-02 12:11:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:50,951 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-02 12:11:50,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:11:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-02 12:11:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-02 12:11:50,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:50,952 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-02 12:11:50,953 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:50,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:50,953 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-02 12:11:50,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:50,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:50,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:50,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:50,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:52,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:52,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:52,419 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:52,510 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:52,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:52,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:52,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:52,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:11:52,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:11:52,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:11:52,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:52,755 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-02 12:11:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:53,137 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-02 12:11:53,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:11:53,137 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-02 12:11:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:53,138 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:11:53,138 INFO L226 Difference]: Without dead ends: 123 [2018-10-02 12:11:53,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:11:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-02 12:11:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-02 12:11:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-02 12:11:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-02 12:11:53,142 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-02 12:11:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:53,142 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-02 12:11:53,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:11:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-02 12:11:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:11:53,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:53,144 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-02 12:11:53,144 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:53,144 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-02 12:11:53,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:53,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:53,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:53,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:53,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:55,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:55,001 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 12:11:55,009 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:55,148 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-02 12:11:55,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:55,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:55,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:55,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:11:55,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:11:55,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:11:55,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:55,577 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-02 12:11:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:55,980 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-02 12:11:55,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:11:55,980 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-02 12:11:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:55,981 INFO L225 Difference]: With dead ends: 127 [2018-10-02 12:11:55,981 INFO L226 Difference]: Without dead ends: 125 [2018-10-02 12:11:55,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime [2018-10-02 12:11:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-02 12:11:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-02 12:11:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-02 12:11:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-02 12:11:55,984 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-02 12:11:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:55,985 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-02 12:11:55,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:11:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-02 12:11:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-02 12:11:55,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:55,986 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-02 12:11:55,986 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:55,986 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-02 12:11:55,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:55,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:55,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:55,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:55,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:57,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:57,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:11:57,925 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:58,071 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-02 12:11:58,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:58,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:58,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:58,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-02 12:11:58,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:11:58,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:11:58,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:58,402 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-02 12:11:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:59,018 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-02 12:11:59,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:11:59,018 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-02 12:11:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:59,019 INFO L225 Difference]: With dead ends: 129 [2018-10-02 12:11:59,019 INFO L226 Difference]: Without dead ends: 127 [2018-10-02 12:11:59,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime [2018-10-02 12:11:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-02 12:11:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-02 12:11:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-02 12:11:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-02 12:11:59,022 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-02 12:11:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:59,022 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-02 12:11:59,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:11:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-02 12:11:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-02 12:11:59,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:59,022 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-02 12:11:59,023 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:59,023 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-02 12:11:59,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:59,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:59,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:59,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:59,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:00,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:00,365 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 12:12:00,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:00,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:00,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:00,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:12:00,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:12:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:12:00,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:00,733 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-02 12:12:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:01,110 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-02 12:12:01,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:12:01,110 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-02 12:12:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:01,111 INFO L225 Difference]: With dead ends: 131 [2018-10-02 12:12:01,111 INFO L226 Difference]: Without dead ends: 129 [2018-10-02 12:12:01,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:12:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-02 12:12:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-02 12:12:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-02 12:12:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-02 12:12:01,116 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-02 12:12:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:01,116 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-02 12:12:01,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:12:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-02 12:12:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:12:01,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:01,117 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-02 12:12:01,117 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:01,117 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-02 12:12:01,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:01,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:01,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:01,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:01,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:02,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:02,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:02,298 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:12:02,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:12:02,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:02,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:02,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:02,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:12:02,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:12:02,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:12:02,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:02,697 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-02 12:12:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:03,036 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-02 12:12:03,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:12:03,036 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-02 12:12:03,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:03,037 INFO L225 Difference]: With dead ends: 133 [2018-10-02 12:12:03,037 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:12:03,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:12:03,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:12:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:12:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:12:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-02 12:12:03,040 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-02 12:12:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:03,040 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-02 12:12:03,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:12:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-02 12:12:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-02 12:12:03,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:03,041 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-02 12:12:03,041 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:03,041 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-02 12:12:03,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:03,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:03,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:03,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:03,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:04,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:04,755 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 12:12:04,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:12:04,923 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-02 12:12:04,923 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:04,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:05,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:05,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:12:05,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:12:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:12:05,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:05,165 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-02 12:12:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:05,524 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-02 12:12:05,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:12:05,525 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-02 12:12:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:05,525 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:12:05,526 INFO L226 Difference]: Without dead ends: 133 [2018-10-02 12:12:05,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:12:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-02 12:12:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-02 12:12:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-02 12:12:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-02 12:12:05,529 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-02 12:12:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:05,529 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-02 12:12:05,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:12:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-02 12:12:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-02 12:12:05,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:05,531 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-02 12:12:05,531 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:05,531 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-02 12:12:05,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:05,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:05,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:05,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:05,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:07,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:07,735 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 12:12:07,744 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:12:07,845 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:12:07,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:07,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:08,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:08,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:12:08,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:12:08,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:12:08,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:08,090 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-02 12:12:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:08,527 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-02 12:12:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:12:08,527 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-02 12:12:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:08,528 INFO L225 Difference]: With dead ends: 137 [2018-10-02 12:12:08,528 INFO L226 Difference]: Without dead ends: 135 [2018-10-02 12:12:08,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:12:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-02 12:12:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-02 12:12:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-02 12:12:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-02 12:12:08,531 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-02 12:12:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:08,531 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-02 12:12:08,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:12:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-02 12:12:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:12:08,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:08,532 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-02 12:12:08,532 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:08,532 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:08,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-02 12:12:08,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:08,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:08,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:08,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:08,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:10,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:10,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:10,358 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:12:10,515 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-02 12:12:10,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:10,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:10,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:10,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:12:10,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:12:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:12:10,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:10,806 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-02 12:12:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:11,266 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-02 12:12:11,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:12:11,267 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-02 12:12:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:11,267 INFO L225 Difference]: With dead ends: 139 [2018-10-02 12:12:11,268 INFO L226 Difference]: Without dead ends: 137 [2018-10-02 12:12:11,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:12:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-02 12:12:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-02 12:12:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-02 12:12:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-02 12:12:11,271 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-02 12:12:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:11,271 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-02 12:12:11,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:12:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-02 12:12:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-02 12:12:11,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:11,272 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-02 12:12:11,273 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:11,273 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-02 12:12:11,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:11,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:11,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:11,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:11,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:12,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:12,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:12,589 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:12:12,761 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-02 12:12:12,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:12,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:13,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:13,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-02 12:12:13,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:12:13,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:12:13,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:13,086 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-02 12:12:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:13,493 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-02 12:12:13,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:12:13,493 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-02 12:12:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:13,495 INFO L225 Difference]: With dead ends: 141 [2018-10-02 12:12:13,495 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:12:13,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:12:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:12:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-02 12:12:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:12:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-02 12:12:13,499 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-02 12:12:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:13,500 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-02 12:12:13,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:12:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-02 12:12:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:12:13,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:13,501 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-02 12:12:13,501 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:13,501 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:13,501 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-02 12:12:13,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:13,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:13,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:15,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:15,922 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 12:12:15,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:16,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:16,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:16,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:12:16,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:12:16,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:12:16,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:16,582 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-02 12:12:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:17,076 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-02 12:12:17,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:12:17,077 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-02 12:12:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:17,078 INFO L225 Difference]: With dead ends: 143 [2018-10-02 12:12:17,078 INFO L226 Difference]: Without dead ends: 141 [2018-10-02 12:12:17,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime [2018-10-02 12:12:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-02 12:12:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-02 12:12:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-02 12:12:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-02 12:12:17,081 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-02 12:12:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:17,082 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-02 12:12:17,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:12:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-02 12:12:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-02 12:12:17,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:17,083 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-02 12:12:17,083 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:17,083 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-02 12:12:17,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:17,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:17,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:17,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:17,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:19,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:19,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:19,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:12:19,275 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:12:19,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:19,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:19,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:19,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:12:19,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:12:19,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:12:19,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:19,644 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-02 12:12:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:20,128 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-02 12:12:20,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:12:20,128 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-02 12:12:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:20,129 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:12:20,129 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:12:20,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime [2018-10-02 12:12:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:12:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-02 12:12:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-02 12:12:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-02 12:12:20,133 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-02 12:12:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:20,133 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-02 12:12:20,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:12:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-02 12:12:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-02 12:12:20,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:20,134 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-02 12:12:20,134 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:20,134 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-02 12:12:20,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:20,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:20,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:20,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:20,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:22,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:22,476 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 12:12:22,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:12:22,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-02 12:12:22,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:22,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:22,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:22,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:12:22,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:12:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:12:22,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:22,920 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-02 12:12:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:23,468 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-02 12:12:23,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:12:23,469 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-02 12:12:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:23,469 INFO L225 Difference]: With dead ends: 147 [2018-10-02 12:12:23,470 INFO L226 Difference]: Without dead ends: 145 [2018-10-02 12:12:23,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime [2018-10-02 12:12:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-02 12:12:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-02 12:12:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-02 12:12:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-02 12:12:23,473 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-02 12:12:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:23,473 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-02 12:12:23,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:12:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-02 12:12:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-02 12:12:23,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:23,474 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-02 12:12:23,474 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:23,474 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:23,475 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-02 12:12:23,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:23,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:23,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:23,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:23,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:26,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:26,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:26,063 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:12:26,176 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:12:26,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:26,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:26,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:26,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-02 12:12:26,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:12:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:12:26,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:26,443 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-02 12:12:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:26,969 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-02 12:12:26,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:12:26,969 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-02 12:12:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:26,970 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:12:26,970 INFO L226 Difference]: Without dead ends: 147 [2018-10-02 12:12:26,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:12:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-02 12:12:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-02 12:12:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-02 12:12:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-02 12:12:26,973 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-02 12:12:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:26,973 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-02 12:12:26,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:12:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-02 12:12:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:12:26,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:26,974 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-02 12:12:26,974 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:26,975 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-02 12:12:26,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:26,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:26,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:26,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:26,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:29,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:29,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:29,095 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:12:29,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-02 12:12:29,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:29,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:29,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:29,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:12:29,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:12:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:12:29,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:29,782 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-02 12:12:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:30,283 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-02 12:12:30,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:12:30,283 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-02 12:12:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:30,284 INFO L225 Difference]: With dead ends: 151 [2018-10-02 12:12:30,284 INFO L226 Difference]: Without dead ends: 149 [2018-10-02 12:12:30,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime [2018-10-02 12:12:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-02 12:12:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-02 12:12:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:12:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-02 12:12:30,288 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-02 12:12:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:30,288 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-02 12:12:30,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:12:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-02 12:12:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:12:30,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:30,289 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-02 12:12:30,290 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:30,290 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:30,290 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-02 12:12:30,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:30,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:30,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:30,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:30,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:31,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:31,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:31,740 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:12:31,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-02 12:12:31,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:31,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:32,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:32,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-02 12:12:32,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:12:32,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:12:32,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:32,258 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-02 12:12:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:32,622 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-02 12:12:32,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:12:32,622 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-02 12:12:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:32,624 INFO L225 Difference]: With dead ends: 153 [2018-10-02 12:12:32,624 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:12:32,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:12:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:12:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:12:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:12:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-02 12:12:32,628 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-02 12:12:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:32,628 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-02 12:12:32,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:12:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-02 12:12:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-02 12:12:32,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:32,629 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-02 12:12:32,630 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:32,630 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:32,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-02 12:12:32,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:32,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:32,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:32,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:32,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:35,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:35,486 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 12:12:35,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:35,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:35,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:35,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:12:35,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:12:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:12:35,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:35,886 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-02 12:12:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:36,450 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-02 12:12:36,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:12:36,450 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-02 12:12:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:36,451 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:12:36,451 INFO L226 Difference]: Without dead ends: 153 [2018-10-02 12:12:36,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime [2018-10-02 12:12:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-02 12:12:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-02 12:12:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-02 12:12:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-02 12:12:36,454 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-02 12:12:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:36,454 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-02 12:12:36,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:12:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-02 12:12:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:12:36,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:36,455 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-02 12:12:36,455 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:36,455 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:36,455 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-02 12:12:36,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:36,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:36,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:36,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:36,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:37,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:37,811 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 12:12:37,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:12:37,933 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:12:37,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:37,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:38,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:38,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-02 12:12:38,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:12:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:12:38,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:38,262 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-02 12:12:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:38,652 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-02 12:12:38,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:12:38,653 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-02 12:12:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:38,654 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:12:38,654 INFO L226 Difference]: Without dead ends: 155 [2018-10-02 12:12:38,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime [2018-10-02 12:12:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-02 12:12:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-02 12:12:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:12:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-02 12:12:38,657 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-02 12:12:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:38,657 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-02 12:12:38,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:12:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-02 12:12:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-02 12:12:38,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:38,658 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-02 12:12:38,658 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:38,658 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-02 12:12:38,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:38,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:38,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:38,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:38,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:41,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:41,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:41,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:12:41,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-02 12:12:41,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:41,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:41,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:41,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:12:41,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:12:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:12:41,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:41,577 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-02 12:12:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:41,941 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-02 12:12:41,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:12:41,941 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-02 12:12:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:41,942 INFO L225 Difference]: With dead ends: 159 [2018-10-02 12:12:41,942 INFO L226 Difference]: Without dead ends: 157 [2018-10-02 12:12:41,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime [2018-10-02 12:12:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-02 12:12:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-02 12:12:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-02 12:12:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-02 12:12:41,946 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-02 12:12:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:41,946 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-02 12:12:41,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:12:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-02 12:12:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-02 12:12:41,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:41,947 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-02 12:12:41,947 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:41,947 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-02 12:12:41,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:41,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:41,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:41,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:41,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:44,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:44,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:44,286 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:12:44,407 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:12:44,407 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:44,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:44,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:44,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-02 12:12:44,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:12:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:12:44,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:44,715 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-02 12:12:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:45,510 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-02 12:12:45,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:12:45,510 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-02 12:12:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:45,511 INFO L225 Difference]: With dead ends: 161 [2018-10-02 12:12:45,511 INFO L226 Difference]: Without dead ends: 159 [2018-10-02 12:12:45,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime [2018-10-02 12:12:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-02 12:12:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-02 12:12:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-02 12:12:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-02 12:12:45,514 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-02 12:12:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:45,515 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-02 12:12:45,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:12:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-02 12:12:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:12:45,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:45,515 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-02 12:12:45,516 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:45,516 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-02 12:12:45,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:45,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:45,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:45,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:45,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:47,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:47,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:47,938 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:12:48,139 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-02 12:12:48,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:48,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:48,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:48,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:12:48,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:12:48,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:12:48,422 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:48,423 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-02 12:12:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:49,074 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-02 12:12:49,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:12:49,074 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-02 12:12:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:49,075 INFO L225 Difference]: With dead ends: 163 [2018-10-02 12:12:49,075 INFO L226 Difference]: Without dead ends: 161 [2018-10-02 12:12:49,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime [2018-10-02 12:12:49,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-02 12:12:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-02 12:12:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-02 12:12:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-02 12:12:49,080 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-02 12:12:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:49,080 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-02 12:12:49,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:12:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-02 12:12:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-02 12:12:49,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:49,081 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-02 12:12:49,081 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:49,081 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-02 12:12:49,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:49,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:49,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:49,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:49,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:51,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:51,557 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 12:12:51,565 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:12:51,802 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-02 12:12:51,802 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:51,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:52,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:52,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-02 12:12:52,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:12:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:12:52,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:52,114 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-02 12:12:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:52,492 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-02 12:12:52,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:12:52,492 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-02 12:12:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:52,493 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:12:52,494 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:12:52,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime [2018-10-02 12:12:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:12:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-02 12:12:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-02 12:12:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-02 12:12:52,499 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-02 12:12:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:52,499 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-02 12:12:52,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:12:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-02 12:12:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-02 12:12:52,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:52,500 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-02 12:12:52,501 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:52,501 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:52,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-02 12:12:52,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:52,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:52,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:52,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:52,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:54,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:54,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:12:54,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:54,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:54,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:54,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:12:54,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:12:54,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:12:54,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:54,922 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-02 12:12:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:55,600 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-02 12:12:55,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:12:55,600 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-02 12:12:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:55,601 INFO L225 Difference]: With dead ends: 167 [2018-10-02 12:12:55,601 INFO L226 Difference]: Without dead ends: 165 [2018-10-02 12:12:55,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime [2018-10-02 12:12:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-02 12:12:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-02 12:12:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-02 12:12:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-02 12:12:55,606 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-02 12:12:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:55,606 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-02 12:12:55,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:12:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-02 12:12:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-02 12:12:55,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:55,607 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-02 12:12:55,608 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:55,608 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:55,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-02 12:12:55,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:55,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:55,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:55,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:55,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:58,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:58,335 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 12:12:58,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:12:58,469 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:12:58,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:58,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:58,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:58,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-02 12:12:58,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:12:58,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:12:58,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:58,768 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-02 12:12:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:59,374 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-02 12:12:59,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:12:59,375 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-02 12:12:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:59,376 INFO L225 Difference]: With dead ends: 169 [2018-10-02 12:12:59,376 INFO L226 Difference]: Without dead ends: 167 [2018-10-02 12:12:59,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime [2018-10-02 12:12:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-02 12:12:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-02 12:12:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-02 12:12:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-02 12:12:59,379 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-02 12:12:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:59,379 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-02 12:12:59,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:12:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-02 12:12:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-02 12:12:59,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:59,380 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-02 12:12:59,380 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:59,380 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:59,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-02 12:12:59,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:59,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:59,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:59,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:59,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:01,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:01,723 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 12:13:01,730 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:13:01,954 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-02 12:13:01,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:01,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:02,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:02,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:13:02,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:13:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:13:02,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:02,341 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-02 12:13:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:02,911 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-02 12:13:02,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:13:02,911 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-02 12:13:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:02,912 INFO L225 Difference]: With dead ends: 171 [2018-10-02 12:13:02,912 INFO L226 Difference]: Without dead ends: 169 [2018-10-02 12:13:02,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime [2018-10-02 12:13:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-02 12:13:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-02 12:13:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-02 12:13:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-02 12:13:02,915 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-02 12:13:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:02,915 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-02 12:13:02,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:13:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-02 12:13:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-02 12:13:02,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:02,916 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-02 12:13:02,916 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:02,917 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-02 12:13:02,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:02,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:02,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:02,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:02,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:04,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:04,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:04,840 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:13:04,972 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:13:04,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:04,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:05,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:05,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-02 12:13:05,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:13:05,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:13:05,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:05,373 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-02 12:13:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:05,848 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-02 12:13:05,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:13:05,849 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-02 12:13:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:05,850 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:13:05,850 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:13:05,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime [2018-10-02 12:13:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:13:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-02 12:13:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-02 12:13:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-02 12:13:05,853 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-02 12:13:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:05,854 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-02 12:13:05,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:13:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-02 12:13:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:13:05,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:05,854 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-02 12:13:05,855 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:05,855 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-02 12:13:05,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:05,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:05,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:05,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:05,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:08,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:08,345 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:08,352 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:13:08,579 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-02 12:13:08,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:08,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:08,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:08,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:13:08,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:13:08,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:13:08,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:08,887 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-02 12:13:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:09,312 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-02 12:13:09,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:13:09,312 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-02 12:13:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:09,313 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:13:09,313 INFO L226 Difference]: Without dead ends: 173 [2018-10-02 12:13:09,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime [2018-10-02 12:13:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-02 12:13:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-02 12:13:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-02 12:13:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-02 12:13:09,317 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-02 12:13:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:09,317 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-02 12:13:09,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:13:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-02 12:13:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-02 12:13:09,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:09,318 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-02 12:13:09,318 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:09,319 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-02 12:13:09,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:09,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:09,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:09,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:09,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:10,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:10,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:10,882 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:13:11,131 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-02 12:13:11,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:11,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:11,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:11,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-02 12:13:11,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:13:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:13:11,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:11,477 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-02 12:13:12,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:12,197 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-02 12:13:12,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:13:12,197 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-02 12:13:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:12,198 INFO L225 Difference]: With dead ends: 177 [2018-10-02 12:13:12,199 INFO L226 Difference]: Without dead ends: 175 [2018-10-02 12:13:12,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:13:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-02 12:13:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-02 12:13:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:13:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-02 12:13:12,204 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-02 12:13:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:12,204 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-02 12:13:12,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:13:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-02 12:13:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-02 12:13:12,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:12,205 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-02 12:13:12,206 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:12,206 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:12,206 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-02 12:13:12,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:12,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:12,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:12,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:12,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:13,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:13,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:13,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:13,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:13,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:13,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-02 12:13:13,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:13:13,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:13:13,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:13,872 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-02 12:13:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:14,318 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-02 12:13:14,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:13:14,319 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-02 12:13:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:14,320 INFO L225 Difference]: With dead ends: 179 [2018-10-02 12:13:14,320 INFO L226 Difference]: Without dead ends: 177 [2018-10-02 12:13:14,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:13:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-02 12:13:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-02 12:13:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-02 12:13:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-02 12:13:14,324 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-02 12:13:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:14,324 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-02 12:13:14,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:13:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-02 12:13:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-02 12:13:14,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:14,325 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-02 12:13:14,325 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:14,325 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-02 12:13:14,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:14,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:14,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:14,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:14,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:16,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:16,256 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:16,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:13:16,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:13:16,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:16,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:16,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:16,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-02 12:13:16,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:13:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:13:16,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:16,736 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-02 12:13:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:17,274 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-02 12:13:17,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:13:17,274 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-02 12:13:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:17,275 INFO L225 Difference]: With dead ends: 181 [2018-10-02 12:13:17,275 INFO L226 Difference]: Without dead ends: 179 [2018-10-02 12:13:17,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:13:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-02 12:13:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-02 12:13:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-02 12:13:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-02 12:13:17,278 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-02 12:13:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:17,278 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-02 12:13:17,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:13:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-02 12:13:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:13:17,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:17,279 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-02 12:13:17,279 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:17,279 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:17,279 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-02 12:13:17,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:17,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:17,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:17,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:17,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:19,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:19,102 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:19,111 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:13:19,359 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-02 12:13:19,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:19,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:19,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:19,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-02 12:13:19,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:13:19,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:13:19,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:19,684 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-02 12:13:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:20,155 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-02 12:13:20,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:13:20,156 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-02 12:13:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:20,157 INFO L225 Difference]: With dead ends: 183 [2018-10-02 12:13:20,157 INFO L226 Difference]: Without dead ends: 181 [2018-10-02 12:13:20,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime [2018-10-02 12:13:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-02 12:13:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-02 12:13:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-02 12:13:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-02 12:13:20,161 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-02 12:13:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:20,161 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-02 12:13:20,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:13:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-02 12:13:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-02 12:13:20,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:20,162 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-02 12:13:20,162 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:20,162 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-02 12:13:20,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:20,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:20,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:20,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:20,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:21,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:21,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:21,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:13:22,073 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:13:22,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:22,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:22,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:22,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-02 12:13:22,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:13:22,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:13:22,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:22,404 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-02 12:13:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:22,962 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-02 12:13:22,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:13:22,962 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-02 12:13:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:22,963 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:13:22,963 INFO L226 Difference]: Without dead ends: 183 [2018-10-02 12:13:22,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:13:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-02 12:13:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-02 12:13:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-02 12:13:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-02 12:13:22,966 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-02 12:13:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:22,966 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-02 12:13:22,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:13:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-02 12:13:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:13:22,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:22,967 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-02 12:13:22,967 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:22,968 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-02 12:13:22,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:22,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:22,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:22,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:22,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:24,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:24,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:24,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:13:24,437 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-02 12:13:24,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:24,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:24,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:24,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-02 12:13:24,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:13:24,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:13:24,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:24,794 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-02 12:13:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:25,238 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-02 12:13:25,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:13:25,239 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-02 12:13:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:25,240 INFO L225 Difference]: With dead ends: 187 [2018-10-02 12:13:25,240 INFO L226 Difference]: Without dead ends: 185 [2018-10-02 12:13:25,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:13:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-02 12:13:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-02 12:13:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-02 12:13:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-02 12:13:25,243 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-02 12:13:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:25,243 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-02 12:13:25,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:13:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-02 12:13:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-02 12:13:25,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:25,244 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-02 12:13:25,244 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:25,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-02 12:13:25,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:25,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:25,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:25,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:25,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:26,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:26,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:26,887 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:13:27,141 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-02 12:13:27,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:27,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:27,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:27,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-02 12:13:27,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:13:27,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:13:27,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:27,475 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-02 12:13:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:27,965 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-02 12:13:27,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:13:27,965 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-02 12:13:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:27,967 INFO L225 Difference]: With dead ends: 189 [2018-10-02 12:13:27,967 INFO L226 Difference]: Without dead ends: 187 [2018-10-02 12:13:27,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:13:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-02 12:13:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-02 12:13:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-02 12:13:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-02 12:13:27,972 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-02 12:13:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:27,973 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-02 12:13:27,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:13:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-02 12:13:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-02 12:13:27,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:27,974 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-02 12:13:27,974 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:27,974 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-02 12:13:27,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:27,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:27,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:27,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:27,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:29,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:29,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:29,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:29,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:29,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:29,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-02 12:13:29,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:13:29,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:13:29,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:29,880 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-02 12:13:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:30,350 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-02 12:13:30,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:13:30,350 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-02 12:13:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:30,351 INFO L225 Difference]: With dead ends: 191 [2018-10-02 12:13:30,351 INFO L226 Difference]: Without dead ends: 189 [2018-10-02 12:13:30,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:13:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-02 12:13:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-02 12:13:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-02 12:13:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-02 12:13:30,355 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-02 12:13:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:30,355 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-02 12:13:30,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:13:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-02 12:13:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:13:30,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:30,357 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-02 12:13:30,357 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:30,357 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-02 12:13:30,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:30,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:30,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:30,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:30,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:31,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:31,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:31,949 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:13:32,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:13:32,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:32,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:32,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:32,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-02 12:13:32,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:13:32,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:13:32,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:32,432 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-02 12:13:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:32,883 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-02 12:13:32,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:13:32,883 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-02 12:13:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:32,884 INFO L225 Difference]: With dead ends: 193 [2018-10-02 12:13:32,884 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:13:32,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:13:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:13:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:13:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:13:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-02 12:13:32,888 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-02 12:13:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:32,888 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-02 12:13:32,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:13:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-02 12:13:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-02 12:13:32,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:32,889 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-02 12:13:32,889 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:32,890 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-02 12:13:32,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:32,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:32,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:32,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:32,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:34,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:34,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:34,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:13:34,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-02 12:13:34,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:34,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:35,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:35,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-02 12:13:35,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:13:35,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:13:35,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:35,176 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-02 12:13:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:35,795 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-02 12:13:35,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:13:35,796 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-02 12:13:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:35,796 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:13:35,796 INFO L226 Difference]: Without dead ends: 193 [2018-10-02 12:13:35,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:13:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-02 12:13:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-02 12:13:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-02 12:13:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-02 12:13:35,800 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-02 12:13:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:35,801 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-02 12:13:35,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:13:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-02 12:13:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-02 12:13:35,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:35,802 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-02 12:13:35,802 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:35,802 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-02 12:13:35,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:35,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:35,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:35,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:35,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:37,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:37,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:37,978 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:13:38,121 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:13:38,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:38,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:38,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:38,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-02 12:13:38,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:13:38,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:13:38,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:38,524 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-02 12:13:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:39,131 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-02 12:13:39,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:13:39,132 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-02 12:13:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:39,133 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:13:39,133 INFO L226 Difference]: Without dead ends: 195 [2018-10-02 12:13:39,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:13:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-02 12:13:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-02 12:13:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-02 12:13:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-02 12:13:39,136 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-02 12:13:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:39,136 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-02 12:13:39,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:13:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-02 12:13:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-02 12:13:39,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:39,137 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-02 12:13:39,137 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:39,138 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-02 12:13:39,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:39,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:39,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:39,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:39,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:40,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:40,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:40,745 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:13:41,038 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-02 12:13:41,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:41,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:41,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:41,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-02 12:13:41,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:13:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:13:41,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:41,568 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-02 12:13:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:42,189 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-02 12:13:42,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:13:42,190 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-02 12:13:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:42,191 INFO L225 Difference]: With dead ends: 199 [2018-10-02 12:13:42,191 INFO L226 Difference]: Without dead ends: 197 [2018-10-02 12:13:42,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime [2018-10-02 12:13:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-02 12:13:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-02 12:13:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-02 12:13:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-02 12:13:42,194 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-02 12:13:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:42,195 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-02 12:13:42,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:13:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-02 12:13:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-02 12:13:42,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:42,196 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-02 12:13:42,196 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:42,196 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-02 12:13:42,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:42,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:42,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:42,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:42,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:43,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:43,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:43,809 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:13:44,085 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-02 12:13:44,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:44,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:44,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:44,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-02 12:13:44,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-02 12:13:44,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-02 12:13:44,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:44,441 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-02 12:13:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:44,917 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-02 12:13:44,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-02 12:13:44,918 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-02 12:13:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:44,919 INFO L225 Difference]: With dead ends: 201 [2018-10-02 12:13:44,919 INFO L226 Difference]: Without dead ends: 199 [2018-10-02 12:13:44,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:13:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-02 12:13:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-02 12:13:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-02 12:13:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-02 12:13:44,923 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-02 12:13:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:44,924 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-02 12:13:44,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-02 12:13:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-02 12:13:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-02 12:13:44,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:44,925 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-02 12:13:44,925 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:44,925 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-02 12:13:44,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:44,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:44,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:44,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:44,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:46,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:46,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:46,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:46,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:47,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:47,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-02 12:13:47,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:13:47,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:13:47,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:47,388 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-02 12:13:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:47,929 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-02 12:13:47,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-02 12:13:47,930 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-02 12:13:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:47,931 INFO L225 Difference]: With dead ends: 203 [2018-10-02 12:13:47,931 INFO L226 Difference]: Without dead ends: 201 [2018-10-02 12:13:47,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:13:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-02 12:13:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-02 12:13:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-02 12:13:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-02 12:13:47,934 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-02 12:13:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:47,934 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-02 12:13:47,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:13:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-02 12:13:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-02 12:13:47,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:47,935 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-02 12:13:47,936 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:47,936 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:47,936 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-02 12:13:47,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:47,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:47,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:47,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:47,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:49,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:49,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:49,750 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:13:49,901 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:13:49,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:49,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:50,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:50,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-02 12:13:50,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:13:50,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:13:50,271 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:50,272 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-02 12:13:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:50,855 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-02 12:13:50,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:13:50,855 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-02 12:13:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:50,856 INFO L225 Difference]: With dead ends: 205 [2018-10-02 12:13:50,856 INFO L226 Difference]: Without dead ends: 203 [2018-10-02 12:13:50,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:13:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-02 12:13:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-02 12:13:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-02 12:13:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-02 12:13:50,859 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-02 12:13:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:50,859 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-02 12:13:50,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:13:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-02 12:13:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-02 12:13:50,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:50,860 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-02 12:13:50,861 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:50,861 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-02 12:13:50,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:50,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:50,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:50,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:50,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:52,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:52,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:52,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:13:53,014 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-02 12:13:53,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:53,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:53,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:53,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-02 12:13:53,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:13:53,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:13:53,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:53,378 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-02 12:13:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:53,901 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-02 12:13:53,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-02 12:13:53,901 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-02 12:13:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:53,902 INFO L225 Difference]: With dead ends: 207 [2018-10-02 12:13:53,902 INFO L226 Difference]: Without dead ends: 205 [2018-10-02 12:13:53,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:13:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-02 12:13:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-02 12:13:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-02 12:13:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-02 12:13:53,905 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-02 12:13:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:53,906 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-02 12:13:53,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:13:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-02 12:13:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-02 12:13:53,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:53,907 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-02 12:13:53,907 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:53,907 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:53,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-02 12:13:53,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:53,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:53,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:53,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:53,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:55,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:55,489 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:55,496 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:13:55,649 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:13:55,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:55,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:56,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:56,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-02 12:13:56,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:13:56,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:13:56,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:56,030 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-02 12:13:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:56,730 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-02 12:13:56,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:13:56,730 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-02 12:13:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:56,731 INFO L225 Difference]: With dead ends: 209 [2018-10-02 12:13:56,731 INFO L226 Difference]: Without dead ends: 207 [2018-10-02 12:13:56,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:13:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-02 12:13:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-02 12:13:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-02 12:13:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-02 12:13:56,736 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-02 12:13:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:56,736 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-02 12:13:56,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:13:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-02 12:13:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-02 12:13:56,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:56,738 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-02 12:13:56,738 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:56,738 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-02 12:13:56,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:56,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:56,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:56,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:13:56,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:59,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:59,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:59,402 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:13:59,865 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-02 12:13:59,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:59,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:00,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:00,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-02 12:14:00,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:14:00,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:14:00,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:00,358 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-02 12:14:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:01,130 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-02 12:14:01,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-02 12:14:01,130 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-02 12:14:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:01,131 INFO L225 Difference]: With dead ends: 211 [2018-10-02 12:14:01,131 INFO L226 Difference]: Without dead ends: 209 [2018-10-02 12:14:01,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime [2018-10-02 12:14:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-02 12:14:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-02 12:14:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-02 12:14:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-02 12:14:01,135 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-02 12:14:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:01,135 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-02 12:14:01,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:14:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-02 12:14:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-02 12:14:01,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:01,136 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-02 12:14:01,136 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:01,136 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-02 12:14:01,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:01,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:01,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:01,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:01,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:03,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:03,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:03,139 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:14:03,447 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-02 12:14:03,447 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:03,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:03,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:03,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-02 12:14:03,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-02 12:14:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-02 12:14:03,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:03,829 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-02 12:14:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:04,534 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-02 12:14:04,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-02 12:14:04,535 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-02 12:14:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:04,535 INFO L225 Difference]: With dead ends: 213 [2018-10-02 12:14:04,535 INFO L226 Difference]: Without dead ends: 211 [2018-10-02 12:14:04,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:14:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-02 12:14:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-02 12:14:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-02 12:14:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-02 12:14:04,540 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-02 12:14:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:04,540 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-02 12:14:04,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-02 12:14:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-02 12:14:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-02 12:14:04,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:04,542 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-02 12:14:04,542 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:04,542 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:04,542 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-02 12:14:04,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:04,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:04,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:04,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:04,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:06,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:06,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:06,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:06,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:07,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:07,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-02 12:14:07,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-02 12:14:07,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-02 12:14:07,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:07,165 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-02 12:14:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:07,781 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-02 12:14:07,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-02 12:14:07,781 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-02 12:14:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:07,782 INFO L225 Difference]: With dead ends: 215 [2018-10-02 12:14:07,782 INFO L226 Difference]: Without dead ends: 213 [2018-10-02 12:14:07,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime [2018-10-02 12:14:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-02 12:14:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-02 12:14:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-02 12:14:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-02 12:14:07,786 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-02 12:14:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:07,786 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-02 12:14:07,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-02 12:14:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-02 12:14:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-02 12:14:07,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:07,788 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-02 12:14:07,788 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:07,788 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-02 12:14:07,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:07,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:07,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:10,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:10,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:10,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:14:10,727 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:14:10,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:10,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:11,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:11,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-02 12:14:11,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-02 12:14:11,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-02 12:14:11,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:11,157 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-02 12:14:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:12,171 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-02 12:14:12,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-02 12:14:12,171 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-02 12:14:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:12,172 INFO L225 Difference]: With dead ends: 217 [2018-10-02 12:14:12,172 INFO L226 Difference]: Without dead ends: 215 [2018-10-02 12:14:12,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime [2018-10-02 12:14:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-02 12:14:12,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-02 12:14:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-02 12:14:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-02 12:14:12,177 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-02 12:14:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:12,177 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-02 12:14:12,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-02 12:14:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-02 12:14:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-02 12:14:12,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:12,178 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-02 12:14:12,178 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:12,178 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:12,178 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-02 12:14:12,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:12,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:12,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:12,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:12,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:14,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:14,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:14,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:14:15,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-02 12:14:15,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:15,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:15,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:15,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-02 12:14:15,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-02 12:14:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-02 12:14:15,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:15,685 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-02 12:14:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:16,585 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-02 12:14:16,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-02 12:14:16,585 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-02 12:14:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:16,586 INFO L225 Difference]: With dead ends: 219 [2018-10-02 12:14:16,586 INFO L226 Difference]: Without dead ends: 217 [2018-10-02 12:14:16,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime [2018-10-02 12:14:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-02 12:14:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-02 12:14:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-02 12:14:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-02 12:14:16,590 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-02 12:14:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:16,591 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-02 12:14:16,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-02 12:14:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-02 12:14:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-02 12:14:16,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:16,592 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-02 12:14:16,592 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:16,592 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-02 12:14:16,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:16,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:16,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:16,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:16,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:19,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:19,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:19,530 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:14:19,692 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:14:19,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:19,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:20,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:20,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-02 12:14:20,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-02 12:14:20,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-02 12:14:20,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:20,092 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-02 12:14:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:20,989 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-02 12:14:20,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-02 12:14:20,990 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-02 12:14:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:20,990 INFO L225 Difference]: With dead ends: 221 [2018-10-02 12:14:20,990 INFO L226 Difference]: Without dead ends: 219 [2018-10-02 12:14:20,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime [2018-10-02 12:14:20,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-02 12:14:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-02 12:14:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-02 12:14:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-02 12:14:20,995 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-02 12:14:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:20,995 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-02 12:14:20,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-02 12:14:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-02 12:14:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-02 12:14:20,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:20,996 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-02 12:14:20,997 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:20,997 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-02 12:14:20,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:20,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:20,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:20,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:20,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:23,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:23,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:23,017 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:14:23,346 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-02 12:14:23,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:23,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:23,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:23,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-02 12:14:23,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-02 12:14:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-02 12:14:23,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:23,752 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-02 12:14:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:24,351 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-02 12:14:24,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-02 12:14:24,351 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-02 12:14:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:24,352 INFO L225 Difference]: With dead ends: 223 [2018-10-02 12:14:24,352 INFO L226 Difference]: Without dead ends: 221 [2018-10-02 12:14:24,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:14:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-02 12:14:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-02 12:14:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-02 12:14:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-02 12:14:24,356 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-02 12:14:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:24,356 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-02 12:14:24,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-02 12:14:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-02 12:14:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-02 12:14:24,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:24,357 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-02 12:14:24,357 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:24,358 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:24,358 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-02 12:14:24,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:24,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:24,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:24,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:24,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:26,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:26,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:26,705 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:14:27,040 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-02 12:14:27,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:27,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:27,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:27,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-02 12:14:27,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-02 12:14:27,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-02 12:14:27,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:27,669 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-02 12:14:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:28,519 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-02 12:14:28,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-02 12:14:28,519 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-02 12:14:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:28,519 INFO L225 Difference]: With dead ends: 225 [2018-10-02 12:14:28,519 INFO L226 Difference]: Without dead ends: 223 [2018-10-02 12:14:28,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.8s impTime [2018-10-02 12:14:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-02 12:14:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-02 12:14:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-02 12:14:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-02 12:14:28,523 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-02 12:14:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:28,523 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-02 12:14:28,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-02 12:14:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-02 12:14:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-02 12:14:28,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:28,524 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-02 12:14:28,524 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:28,524 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-02 12:14:28,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:28,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:28,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:28,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:28,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:30,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:30,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:30,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:31,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:14:31,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:31,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-02 12:14:31,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-02 12:14:31,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-02 12:14:31,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:31,581 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-02 12:14:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:32,590 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-02 12:14:32,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-02 12:14:32,590 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-02 12:14:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:32,591 INFO L225 Difference]: With dead ends: 227 [2018-10-02 12:14:32,591 INFO L226 Difference]: Without dead ends: 225 [2018-10-02 12:14:32,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime [2018-10-02 12:14:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-02 12:14:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-02 12:14:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-02 12:14:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-02 12:14:32,594 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-02 12:14:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:32,594 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-02 12:14:32,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-02 12:14:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-02 12:14:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-02 12:14:32,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:32,595 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-02 12:14:32,595 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:32,595 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-02 12:14:32,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:32,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:32,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:32,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:32,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-02 12:14:32,873 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:14:32,877 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:14:32,877 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:14:32 BoogieIcfgContainer [2018-10-02 12:14:32,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:14:32,878 INFO L168 Benchmark]: Toolchain (without parser) took 236755.61 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 437.3 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 436.4 MB). Peak memory consumption was 873.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:14:32,880 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 12:14:32,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.59 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 12:14:32,881 INFO L168 Benchmark]: Boogie Preprocessor took 24.34 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 12:14:32,881 INFO L168 Benchmark]: RCFGBuilder took 304.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:14:32,883 INFO L168 Benchmark]: TraceAbstraction took 236378.72 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 437.3 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 415.2 MB). Peak memory consumption was 852.5 MB. Max. memory is 7.1 GB. [2018-10-02 12:14:32,886 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 0.22 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 41.59 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 24.34 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 304.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236378.72 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 437.3 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 415.2 MB). Peak memory consumption was 852.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 225 with TraceHistMax 111, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 223 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 236.3s OverallTime, 111 OverallIterations, 111 TraceHistogramMax, 43.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 440 SDtfs, 0 SDslu, 9384 SDs, 0 SdLazy, 9494 SolverSat, 201 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18532 GetRequests, 12427 SyntacticMatches, 0 SemanticMatches, 6105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 110 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 17.0s SatisfiabilityAnalysisTime, 167.6s InterpolantComputationTime, 24856 NumberOfCodeBlocks, 24856 NumberOfCodeBlocksAsserted, 3261 NumberOfCheckSat, 24637 ConstructedInterpolants, 0 QuantifiedInterpolants, 10891519 SizeOfPredicates, 326 NumberOfNonLiveVariables, 73575 ConjunctsInSsa, 6754 ConjunctsInUnsatCore, 219 InterpolantComputations, 1 PerfectInterpolantSequences, 0/887260 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-14-32-895.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-14-32-895.csv Completed graceful shutdown