java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:38:12,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:38:12,261 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:38:12,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:38:12,276 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:38:12,277 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:38:12,278 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:38:12,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:38:12,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:38:12,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:38:12,283 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 20:38:12,307 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 20:38:12,323 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:38:12,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:38:12,324 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:38:12,325 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:38:12,325 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:38:12,325 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:38:12,326 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:38:12,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:38:12,326 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:38:12,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:38:12,328 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:38:12,329 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:38:12,329 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:38:12,329 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:38:12,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:38:12,330 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:38:12,330 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:38:12,330 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:38:12,330 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:38:12,330 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:38:12,331 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:38:12,331 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:38:12,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:38:12,331 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:38:12,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:38:12,332 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:38:12,333 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:38:12,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:38:12,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:38:12,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:38:12,333 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:38:12,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:38:12,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:38:12,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:38:12,393 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:38:12,394 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:38:12,394 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-30 20:38:12,395 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-09-30 20:38:12,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:38:12,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:38:12,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:38:12,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:38:12,451 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:38:12,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:38:12,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:38:12,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:38:12,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:38:12,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... [2018-09-30 20:38:12,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:38:12,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:38:12,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:38:12,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:38:12,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:38:12,589 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 20:38:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 20:38:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 20:38:12,890 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 20:38:12,890 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:38:12 BoogieIcfgContainer [2018-09-30 20:38:12,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:38:12,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:38:12,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:38:12,896 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:38:12,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:12" (1/2) ... [2018-09-30 20:38:12,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59660566 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:38:12, skipping insertion in model container [2018-09-30 20:38:12,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:38:12" (2/2) ... [2018-09-30 20:38:12,899 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-30 20:38:12,909 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:38:12,922 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:38:12,981 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:38:12,982 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:38:12,982 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:38:12,982 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:38:12,982 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:38:12,982 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:38:12,983 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:38:12,983 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:38:12,983 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:38:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 20:38:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 20:38:13,015 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:13,016 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:38:13,017 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:13,031 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:13,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-09-30 20:38:13,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:13,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:13,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:13,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:13,219 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:38:13,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:38:13,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:38:13,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:38:13,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:13,241 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 20:38:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:13,415 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-09-30 20:38:13,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:38:13,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-30 20:38:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:13,429 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:38:13,429 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 20:38:13,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 20:38:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 20:38:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 20:38:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-09-30 20:38:13,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-09-30 20:38:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:13,478 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-09-30 20:38:13,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:38:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-09-30 20:38:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-30 20:38:13,478 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:13,479 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:38:13,479 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:13,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-09-30 20:38:13,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:13,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:13,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:13,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:13,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:13,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:13,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:13,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:13,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:13,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 20:38:13,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:38:13,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:38:13,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:13,705 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-09-30 20:38:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:13,820 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-09-30 20:38:13,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:38:13,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-09-30 20:38:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:13,823 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:38:13,823 INFO L226 Difference]: Without dead ends: 12 [2018-09-30 20:38:13,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-30 20:38:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-30 20:38:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-30 20:38:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-09-30 20:38:13,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-09-30 20:38:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:13,828 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-09-30 20:38:13,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:38:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-09-30 20:38:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:38:13,829 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:13,829 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:38:13,830 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:13,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-09-30 20:38:13,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:13,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:13,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:13,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:13,948 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:38:13,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 20:38:13,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:38:13,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:38:13,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:13,949 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-09-30 20:38:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:14,468 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-09-30 20:38:14,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:38:14,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-30 20:38:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:14,471 INFO L225 Difference]: With dead ends: 32 [2018-09-30 20:38:14,471 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 20:38:14,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 20:38:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-09-30 20:38:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 20:38:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-09-30 20:38:14,478 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-09-30 20:38:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:14,479 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-09-30 20:38:14,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:38:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-09-30 20:38:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:38:14,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:14,480 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:38:14,480 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:14,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:14,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-09-30 20:38:14,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:14,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:14,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:14,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:14,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 20:38:14,564 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:38:14,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 20:38:14,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:38:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:38:14,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:14,566 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-09-30 20:38:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:14,744 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-09-30 20:38:14,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:38:14,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-30 20:38:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:14,747 INFO L225 Difference]: With dead ends: 26 [2018-09-30 20:38:14,747 INFO L226 Difference]: Without dead ends: 24 [2018-09-30 20:38:14,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:14,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-30 20:38:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-09-30 20:38:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 20:38:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-30 20:38:14,755 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-09-30 20:38:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:14,755 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-30 20:38:14,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:38:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-30 20:38:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 20:38:14,756 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:14,757 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-09-30 20:38:14,757 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:14,757 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-09-30 20:38:14,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:14,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:14,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:14,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:14,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:14,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:14,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:14,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:14,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:14,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:14,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 20:38:14,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:38:14,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:38:14,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:14,961 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-09-30 20:38:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:15,037 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-30 20:38:15,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:38:15,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-30 20:38:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:15,042 INFO L225 Difference]: With dead ends: 37 [2018-09-30 20:38:15,043 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 20:38:15,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 20:38:15,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 20:38:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 20:38:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-30 20:38:15,052 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-09-30 20:38:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:15,052 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-30 20:38:15,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:38:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-30 20:38:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 20:38:15,053 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:15,053 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:15,053 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:15,054 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-09-30 20:38:15,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:15,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:15,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:15,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:15,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:15,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:15,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:15,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:15,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:15,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:15,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:15,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:15,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 20:38:15,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:38:15,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:38:15,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:15,548 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-09-30 20:38:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:16,064 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-30 20:38:16,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:38:16,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-09-30 20:38:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:16,067 INFO L225 Difference]: With dead ends: 39 [2018-09-30 20:38:16,067 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 20:38:16,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:38:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 20:38:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 20:38:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 20:38:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-30 20:38:16,074 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-09-30 20:38:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:16,074 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-30 20:38:16,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:38:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-30 20:38:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 20:38:16,075 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:16,075 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:16,076 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:16,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:16,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-09-30 20:38:16,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:16,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:16,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:16,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:16,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:16,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:16,169 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:16,258 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-30 20:38:16,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:16,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:16,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:16,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:38:16,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:38:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:38:16,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:16,411 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-09-30 20:38:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:16,539 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-30 20:38:16,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:38:16,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-09-30 20:38:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:16,547 INFO L225 Difference]: With dead ends: 41 [2018-09-30 20:38:16,547 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 20:38:16,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 20:38:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 20:38:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 20:38:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-30 20:38:16,554 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-09-30 20:38:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:16,554 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-30 20:38:16,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:38:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-30 20:38:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 20:38:16,556 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:16,556 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:16,556 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:16,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:16,556 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-09-30 20:38:16,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:16,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:16,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:16,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:16,689 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:16,689 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:16,708 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:16,735 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:16,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:16,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:16,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:16,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 20:38:16,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:38:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:38:16,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:16,825 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-09-30 20:38:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:16,969 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-30 20:38:16,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:38:16,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 20:38:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:16,973 INFO L225 Difference]: With dead ends: 43 [2018-09-30 20:38:16,973 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 20:38:16,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 20:38:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 20:38:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 20:38:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-09-30 20:38:16,979 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-09-30 20:38:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:16,980 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-09-30 20:38:16,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:38:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-09-30 20:38:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 20:38:16,981 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:16,981 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:16,981 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:16,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:16,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-09-30 20:38:16,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:16,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:16,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:16,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:17,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:17,092 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:17,103 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:17,146 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 20:38:17,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:17,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:17,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:17,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 20:38:17,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 20:38:17,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 20:38:17,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:17,257 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-09-30 20:38:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:17,464 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-30 20:38:17,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:38:17,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-30 20:38:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:17,467 INFO L225 Difference]: With dead ends: 45 [2018-09-30 20:38:17,467 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 20:38:17,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 20:38:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 20:38:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 20:38:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-30 20:38:17,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-09-30 20:38:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:17,473 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-30 20:38:17,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 20:38:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-30 20:38:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 20:38:17,474 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:17,475 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:17,475 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:17,475 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-09-30 20:38:17,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:17,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:17,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:17,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:17,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:17,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:17,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:17,569 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:17,702 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-30 20:38:17,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:17,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:17,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:17,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 20:38:17,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:38:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:38:17,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:17,906 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-09-30 20:38:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:17,978 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-09-30 20:38:17,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:38:17,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-09-30 20:38:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:17,980 INFO L225 Difference]: With dead ends: 47 [2018-09-30 20:38:17,980 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 20:38:17,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 20:38:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-30 20:38:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-30 20:38:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-09-30 20:38:17,987 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-09-30 20:38:17,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:17,988 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-09-30 20:38:17,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:38:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-09-30 20:38:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 20:38:17,989 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:17,989 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:17,989 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:17,990 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:17,990 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-09-30 20:38:17,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:17,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:17,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:17,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:17,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:18,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:18,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:18,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:18,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:18,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:18,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 20:38:18,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:38:18,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:38:18,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:18,249 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-09-30 20:38:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:18,352 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-09-30 20:38:18,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:38:18,354 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-09-30 20:38:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:18,355 INFO L225 Difference]: With dead ends: 49 [2018-09-30 20:38:18,355 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 20:38:18,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 20:38:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 20:38:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 20:38:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-09-30 20:38:18,361 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-09-30 20:38:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:18,362 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-09-30 20:38:18,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:38:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-09-30 20:38:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 20:38:18,363 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:18,363 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:18,363 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:18,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-09-30 20:38:18,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:18,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:18,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:18,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:18,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:18,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:18,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:18,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:18,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:18,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:18,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:18,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:18,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 20:38:18,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:38:18,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:38:18,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:18,619 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-09-30 20:38:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:18,720 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-09-30 20:38:18,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:38:18,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-09-30 20:38:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:18,722 INFO L225 Difference]: With dead ends: 51 [2018-09-30 20:38:18,722 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 20:38:18,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 20:38:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 20:38:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 20:38:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-09-30 20:38:18,728 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-09-30 20:38:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:18,728 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-09-30 20:38:18,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:38:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-09-30 20:38:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-30 20:38:18,730 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:18,730 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:18,730 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:18,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:18,730 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-09-30 20:38:18,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:18,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:18,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:18,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:18,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:18,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:18,876 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:18,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:18,938 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-30 20:38:18,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:18,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:19,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:19,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 20:38:19,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:38:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:38:19,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:19,111 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-09-30 20:38:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:19,492 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-09-30 20:38:19,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:38:19,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-09-30 20:38:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:19,494 INFO L225 Difference]: With dead ends: 53 [2018-09-30 20:38:19,495 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 20:38:19,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 20:38:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 20:38:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 20:38:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-09-30 20:38:19,501 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-09-30 20:38:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:19,502 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-09-30 20:38:19,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:38:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-09-30 20:38:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 20:38:19,503 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:19,503 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:19,503 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:19,504 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:19,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-09-30 20:38:19,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:19,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:19,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:19,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:19,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:19,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:19,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:19,654 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:19,683 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:19,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:19,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:19,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:19,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 20:38:19,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:38:19,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:38:19,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:19,836 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-09-30 20:38:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:19,970 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-09-30 20:38:19,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:38:19,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-09-30 20:38:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:19,972 INFO L225 Difference]: With dead ends: 55 [2018-09-30 20:38:19,972 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 20:38:19,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 20:38:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 20:38:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 20:38:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-09-30 20:38:19,986 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-09-30 20:38:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:19,986 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-09-30 20:38:19,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:38:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-09-30 20:38:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 20:38:19,991 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:19,991 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:19,992 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:19,992 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:19,992 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-09-30 20:38:19,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:19,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:19,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:19,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:19,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:20,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:20,207 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:20,218 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:20,311 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-30 20:38:20,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:20,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:20,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:20,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 20:38:20,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:38:20,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:38:20,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:20,427 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-09-30 20:38:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:20,523 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-09-30 20:38:20,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:38:20,528 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-09-30 20:38:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:20,528 INFO L225 Difference]: With dead ends: 57 [2018-09-30 20:38:20,529 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:38:20,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:38:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 20:38:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 20:38:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-09-30 20:38:20,535 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-09-30 20:38:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:20,535 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-09-30 20:38:20,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:38:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-09-30 20:38:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 20:38:20,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:20,536 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:20,537 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:20,537 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-09-30 20:38:20,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:20,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:20,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:20,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:20,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:21,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:21,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:21,052 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:21,134 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-09-30 20:38:21,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:21,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:21,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:21,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 20:38:21,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:38:21,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:38:21,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:21,251 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-09-30 20:38:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:21,834 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-09-30 20:38:21,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:38:21,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-09-30 20:38:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:21,835 INFO L225 Difference]: With dead ends: 59 [2018-09-30 20:38:21,836 INFO L226 Difference]: Without dead ends: 45 [2018-09-30 20:38:21,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-30 20:38:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-30 20:38:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-30 20:38:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-09-30 20:38:21,841 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-09-30 20:38:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:21,841 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-09-30 20:38:21,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:38:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-09-30 20:38:21,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 20:38:21,842 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:21,842 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:21,843 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:21,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:21,843 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-09-30 20:38:21,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:21,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:21,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:21,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:21,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:22,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:22,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:22,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:22,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:22,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:22,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 20:38:22,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:38:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:38:22,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:22,371 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-09-30 20:38:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:22,577 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-09-30 20:38:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:38:22,578 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-09-30 20:38:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:22,579 INFO L225 Difference]: With dead ends: 61 [2018-09-30 20:38:22,579 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 20:38:22,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 20:38:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 20:38:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 20:38:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-09-30 20:38:22,587 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-09-30 20:38:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:22,588 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-09-30 20:38:22,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:38:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-09-30 20:38:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 20:38:22,588 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:22,589 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:22,589 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:22,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-09-30 20:38:22,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:22,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:22,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:22,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:22,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:22,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:22,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:22,761 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:22,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:22,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:22,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:22,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:22,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 20:38:22,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:38:22,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:38:22,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:22,936 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-09-30 20:38:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:23,153 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-09-30 20:38:23,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 20:38:23,153 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-09-30 20:38:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:23,154 INFO L225 Difference]: With dead ends: 63 [2018-09-30 20:38:23,154 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 20:38:23,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 20:38:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 20:38:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 20:38:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-09-30 20:38:23,160 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-09-30 20:38:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:23,160 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-09-30 20:38:23,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:38:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-09-30 20:38:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 20:38:23,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:23,161 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:23,161 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:23,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-09-30 20:38:23,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:23,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:23,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:23,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:23,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:23,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:23,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:23,939 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:23,977 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-09-30 20:38:23,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:23,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:24,425 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:24,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 20:38:24,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:38:24,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:38:24,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:24,426 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-09-30 20:38:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:24,651 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-09-30 20:38:24,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:38:24,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-09-30 20:38:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:24,652 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:38:24,652 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 20:38:24,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:38:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 20:38:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 20:38:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 20:38:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-30 20:38:24,659 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-09-30 20:38:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:24,659 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-30 20:38:24,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:38:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-30 20:38:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 20:38:24,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:24,660 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:24,660 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:24,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-09-30 20:38:24,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:24,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:24,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:24,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:24,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:25,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:25,048 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:25,058 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:25,090 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:25,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:25,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:25,177 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:25,178 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 20:38:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:38:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:38:25,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:25,178 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-09-30 20:38:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:25,297 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-09-30 20:38:25,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:38:25,297 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-09-30 20:38:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:25,299 INFO L225 Difference]: With dead ends: 67 [2018-09-30 20:38:25,299 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 20:38:25,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 20:38:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 20:38:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 20:38:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-09-30 20:38:25,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-09-30 20:38:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:25,306 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-09-30 20:38:25,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:38:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-09-30 20:38:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 20:38:25,307 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:25,307 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:25,307 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:25,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-09-30 20:38:25,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:25,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:25,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:25,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:25,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:25,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:25,494 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:25,501 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:25,545 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-30 20:38:25,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:25,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:25,893 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:25,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 20:38:25,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:38:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:38:25,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:25,894 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-09-30 20:38:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:26,101 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-09-30 20:38:26,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:38:26,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-09-30 20:38:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:26,102 INFO L225 Difference]: With dead ends: 69 [2018-09-30 20:38:26,102 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 20:38:26,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 20:38:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 20:38:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 20:38:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-09-30 20:38:26,108 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-09-30 20:38:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:26,109 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-09-30 20:38:26,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:38:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-09-30 20:38:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 20:38:26,110 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:26,110 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:26,110 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:26,110 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:26,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-09-30 20:38:26,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:26,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:26,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:26,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:26,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:26,399 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:26,454 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-09-30 20:38:26,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:26,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:26,574 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:26,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 20:38:26,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:38:26,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:38:26,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:26,575 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-09-30 20:38:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:26,903 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-09-30 20:38:26,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:38:26,906 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-09-30 20:38:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:26,907 INFO L225 Difference]: With dead ends: 71 [2018-09-30 20:38:26,907 INFO L226 Difference]: Without dead ends: 57 [2018-09-30 20:38:26,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:38:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-30 20:38:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-30 20:38:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 20:38:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-09-30 20:38:26,912 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-09-30 20:38:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:26,913 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-09-30 20:38:26,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:38:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-09-30 20:38:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 20:38:26,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:26,914 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:26,914 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:26,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-09-30 20:38:26,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:26,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:26,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:26,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:27,344 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:27,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:27,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:27,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:27,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:27,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 20:38:27,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 20:38:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 20:38:27,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:27,567 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-09-30 20:38:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:27,870 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-09-30 20:38:27,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:38:27,874 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-09-30 20:38:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:27,874 INFO L225 Difference]: With dead ends: 73 [2018-09-30 20:38:27,874 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 20:38:27,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 20:38:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 20:38:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 20:38:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-09-30 20:38:27,880 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-09-30 20:38:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:27,880 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-09-30 20:38:27,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 20:38:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-09-30 20:38:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 20:38:27,880 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:27,881 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:27,881 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:27,881 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-09-30 20:38:27,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:27,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:27,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:28,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:28,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:28,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:28,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:28,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:28,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:28,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:28,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 20:38:28,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:38:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:38:28,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:28,486 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-09-30 20:38:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:28,604 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-09-30 20:38:28,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:38:28,604 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-09-30 20:38:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:28,605 INFO L225 Difference]: With dead ends: 75 [2018-09-30 20:38:28,605 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 20:38:28,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 20:38:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 20:38:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 20:38:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-09-30 20:38:28,610 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-09-30 20:38:28,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:28,610 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-09-30 20:38:28,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:38:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-09-30 20:38:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-30 20:38:28,611 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:28,611 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:28,611 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:28,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-09-30 20:38:28,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:28,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:28,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:28,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:28,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:28,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:28,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:28,815 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:28,863 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-09-30 20:38:28,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:28,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:29,002 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:29,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 20:38:29,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 20:38:29,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 20:38:29,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:29,003 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-09-30 20:38:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:29,115 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-09-30 20:38:29,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:38:29,116 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-09-30 20:38:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:29,116 INFO L225 Difference]: With dead ends: 77 [2018-09-30 20:38:29,116 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:38:29,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:38:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 20:38:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 20:38:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-09-30 20:38:29,119 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-09-30 20:38:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:29,120 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-09-30 20:38:29,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 20:38:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-09-30 20:38:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 20:38:29,120 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:29,120 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:29,121 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:29,121 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-09-30 20:38:29,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:29,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:29,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:29,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:29,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:29,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:29,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:29,348 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:29,385 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:29,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:29,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:29,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:29,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 20:38:29,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 20:38:29,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 20:38:29,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:29,498 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-09-30 20:38:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:29,697 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-09-30 20:38:29,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 20:38:29,698 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-09-30 20:38:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:29,698 INFO L225 Difference]: With dead ends: 79 [2018-09-30 20:38:29,699 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 20:38:29,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 20:38:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 20:38:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 20:38:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-09-30 20:38:29,703 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-09-30 20:38:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:29,703 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-09-30 20:38:29,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 20:38:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-09-30 20:38:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-30 20:38:29,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:29,704 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:29,704 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:29,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-09-30 20:38:29,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:29,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:29,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:29,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:29,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:30,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:30,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:30,101 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:30,159 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-30 20:38:30,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:30,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:30,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:30,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 20:38:30,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 20:38:30,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 20:38:30,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:30,320 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-09-30 20:38:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:30,558 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-09-30 20:38:30,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:38:30,559 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-09-30 20:38:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:30,559 INFO L225 Difference]: With dead ends: 81 [2018-09-30 20:38:30,559 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 20:38:30,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 20:38:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 20:38:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 20:38:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-09-30 20:38:30,565 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-09-30 20:38:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:30,565 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-09-30 20:38:30,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 20:38:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-09-30 20:38:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 20:38:30,566 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:30,566 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:30,567 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:30,567 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-09-30 20:38:30,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:30,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:30,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:30,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:30,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:30,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:30,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:30,804 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:30,861 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-09-30 20:38:30,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:30,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:31,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:31,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 20:38:31,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:38:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:38:31,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:31,007 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-09-30 20:38:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:31,271 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-09-30 20:38:31,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 20:38:31,272 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-09-30 20:38:31,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:31,272 INFO L225 Difference]: With dead ends: 83 [2018-09-30 20:38:31,273 INFO L226 Difference]: Without dead ends: 69 [2018-09-30 20:38:31,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-30 20:38:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-30 20:38:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 20:38:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-09-30 20:38:31,276 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-09-30 20:38:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:31,276 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-09-30 20:38:31,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:38:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-09-30 20:38:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 20:38:31,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:31,277 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:31,277 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:31,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-09-30 20:38:31,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:31,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:31,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:31,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:31,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:32,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:32,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:32,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:32,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:32,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:32,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 20:38:32,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 20:38:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 20:38:32,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:32,282 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-09-30 20:38:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:32,584 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-09-30 20:38:32,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:38:32,588 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-09-30 20:38:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:32,589 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:38:32,589 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 20:38:32,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:38:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 20:38:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 20:38:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 20:38:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-09-30 20:38:32,594 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-09-30 20:38:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:32,594 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-09-30 20:38:32,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 20:38:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-09-30 20:38:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 20:38:32,595 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:32,595 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:32,595 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:32,595 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-09-30 20:38:32,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:32,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:32,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:32,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:32,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:33,170 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:33,170 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:33,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:33,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:33,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:33,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:33,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:33,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 20:38:33,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 20:38:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 20:38:33,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:33,405 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-09-30 20:38:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:33,545 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-09-30 20:38:33,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:38:33,546 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-09-30 20:38:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:33,547 INFO L225 Difference]: With dead ends: 87 [2018-09-30 20:38:33,547 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 20:38:33,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:38:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 20:38:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 20:38:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 20:38:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-30 20:38:33,553 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-09-30 20:38:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:33,553 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-30 20:38:33,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 20:38:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-30 20:38:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-30 20:38:33,554 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:33,554 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:33,554 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:33,554 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:33,554 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-09-30 20:38:33,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:33,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:33,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:33,555 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:33,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:33,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:33,796 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:33,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:33,870 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-09-30 20:38:33,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:33,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:34,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:34,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 20:38:34,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 20:38:34,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 20:38:34,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:34,029 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-09-30 20:38:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:34,227 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-09-30 20:38:34,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:38:34,228 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-09-30 20:38:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:34,229 INFO L225 Difference]: With dead ends: 89 [2018-09-30 20:38:34,229 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 20:38:34,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:38:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 20:38:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 20:38:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 20:38:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-09-30 20:38:34,235 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-09-30 20:38:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:34,235 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-09-30 20:38:34,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 20:38:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-09-30 20:38:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 20:38:34,236 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:34,236 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:34,236 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:34,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-09-30 20:38:34,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:34,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:34,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:34,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:34,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:34,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:34,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:34,963 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:35,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:35,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:35,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:35,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:35,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 20:38:35,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:38:35,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:38:35,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:35,158 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-09-30 20:38:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:35,447 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-09-30 20:38:35,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:38:35,447 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-09-30 20:38:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:35,448 INFO L225 Difference]: With dead ends: 91 [2018-09-30 20:38:35,448 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 20:38:35,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:38:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 20:38:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 20:38:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 20:38:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-09-30 20:38:35,452 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-09-30 20:38:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:35,452 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-09-30 20:38:35,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:38:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-09-30 20:38:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 20:38:35,453 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:35,453 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:35,453 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:35,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-09-30 20:38:35,454 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:35,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:35,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:35,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:35,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:36,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:36,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:36,139 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:36,204 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-30 20:38:36,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:36,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:36,348 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:36,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 20:38:36,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 20:38:36,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 20:38:36,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:36,349 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-09-30 20:38:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:36,637 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-09-30 20:38:36,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:38:36,637 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-09-30 20:38:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:36,638 INFO L225 Difference]: With dead ends: 93 [2018-09-30 20:38:36,638 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 20:38:36,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:38:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 20:38:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 20:38:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 20:38:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-09-30 20:38:36,643 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-09-30 20:38:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:36,643 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-09-30 20:38:36,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 20:38:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-09-30 20:38:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 20:38:36,643 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:36,644 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:36,644 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:36,644 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-09-30 20:38:36,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:36,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:36,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:36,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:36,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:36,975 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:37,049 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-30 20:38:37,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:37,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:37,334 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:37,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 20:38:37,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 20:38:37,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 20:38:37,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:37,336 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-09-30 20:38:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:37,723 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-09-30 20:38:37,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:38:37,724 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-30 20:38:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:37,724 INFO L225 Difference]: With dead ends: 95 [2018-09-30 20:38:37,724 INFO L226 Difference]: Without dead ends: 81 [2018-09-30 20:38:37,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-30 20:38:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-30 20:38:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-30 20:38:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-09-30 20:38:37,729 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-09-30 20:38:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:37,730 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-09-30 20:38:37,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 20:38:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-09-30 20:38:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 20:38:37,730 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:37,730 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:37,730 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:37,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:37,731 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-09-30 20:38:37,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:37,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:37,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:37,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:37,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:38,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:38,169 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:38,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:38,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:38,406 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:38,406 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 20:38:38,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 20:38:38,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 20:38:38,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:38,407 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-09-30 20:38:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:38,746 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-09-30 20:38:38,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:38:38,753 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-09-30 20:38:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:38,753 INFO L225 Difference]: With dead ends: 97 [2018-09-30 20:38:38,753 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 20:38:38,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 20:38:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 20:38:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 20:38:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-09-30 20:38:38,758 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-09-30 20:38:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:38,758 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-09-30 20:38:38,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 20:38:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-09-30 20:38:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 20:38:38,759 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:38,759 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:38,759 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:38,760 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:38,760 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-09-30 20:38:38,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:38,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:38,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:38,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:38,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:38,972 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:39,029 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:39,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:39,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:39,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:39,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 20:38:39,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:38:39,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:38:39,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:39,201 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-09-30 20:38:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:39,573 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-09-30 20:38:39,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:38:39,574 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-09-30 20:38:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:39,575 INFO L225 Difference]: With dead ends: 99 [2018-09-30 20:38:39,575 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 20:38:39,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:38:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 20:38:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 20:38:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 20:38:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-09-30 20:38:39,580 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-09-30 20:38:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:39,581 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-09-30 20:38:39,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:38:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-09-30 20:38:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 20:38:39,581 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:39,581 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:39,582 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:39,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-09-30 20:38:39,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:39,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:39,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:40,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:40,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:40,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:40,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-30 20:38:40,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:40,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:40,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:40,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 20:38:40,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 20:38:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 20:38:40,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:40,558 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-09-30 20:38:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:40,738 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-09-30 20:38:40,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:38:40,739 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-09-30 20:38:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:40,740 INFO L225 Difference]: With dead ends: 101 [2018-09-30 20:38:40,740 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 20:38:40,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:38:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 20:38:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 20:38:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 20:38:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-09-30 20:38:40,747 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-09-30 20:38:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:40,747 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-09-30 20:38:40,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 20:38:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-09-30 20:38:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 20:38:40,748 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:40,748 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:40,748 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:40,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:40,748 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-09-30 20:38:40,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:40,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:40,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:40,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:40,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:41,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:41,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:41,153 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:41,205 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:41,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:41,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:41,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:41,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 20:38:41,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 20:38:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 20:38:41,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:41,398 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-09-30 20:38:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:41,629 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-09-30 20:38:41,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 20:38:41,630 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-09-30 20:38:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:41,631 INFO L225 Difference]: With dead ends: 103 [2018-09-30 20:38:41,631 INFO L226 Difference]: Without dead ends: 89 [2018-09-30 20:38:41,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-30 20:38:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-30 20:38:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 20:38:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-09-30 20:38:41,635 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-09-30 20:38:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:41,635 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-09-30 20:38:41,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 20:38:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-09-30 20:38:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 20:38:41,636 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:41,636 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:41,636 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:41,636 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-09-30 20:38:41,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:41,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:41,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:41,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:41,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:41,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:41,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:41,942 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:42,039 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 20:38:42,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:42,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:42,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:42,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 20:38:42,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 20:38:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 20:38:42,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:42,683 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-09-30 20:38:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:43,218 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-09-30 20:38:43,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:38:43,218 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-09-30 20:38:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:43,219 INFO L225 Difference]: With dead ends: 105 [2018-09-30 20:38:43,219 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 20:38:43,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:38:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 20:38:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 20:38:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 20:38:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-09-30 20:38:43,223 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-09-30 20:38:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:43,224 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-09-30 20:38:43,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 20:38:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-09-30 20:38:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 20:38:43,224 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:43,224 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:43,224 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:43,225 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-09-30 20:38:43,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:43,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:43,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:43,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:43,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:43,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:43,897 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:43,904 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:43,991 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-09-30 20:38:43,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:43,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:44,190 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:44,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 20:38:44,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:38:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:38:44,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:44,191 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-09-30 20:38:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:44,517 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-09-30 20:38:44,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:38:44,518 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-09-30 20:38:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:44,519 INFO L225 Difference]: With dead ends: 107 [2018-09-30 20:38:44,519 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:38:44,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:38:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:38:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 20:38:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 20:38:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-09-30 20:38:44,525 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-09-30 20:38:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:44,525 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-09-30 20:38:44,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:38:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-09-30 20:38:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 20:38:44,526 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:44,526 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:44,526 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:44,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-09-30 20:38:44,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:44,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:44,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:45,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:45,299 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:45,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:45,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:45,551 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:45,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 20:38:45,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 20:38:45,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 20:38:45,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:45,552 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-09-30 20:38:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:45,825 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-09-30 20:38:45,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:38:45,825 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-09-30 20:38:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:45,826 INFO L225 Difference]: With dead ends: 109 [2018-09-30 20:38:45,827 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 20:38:45,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:38:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 20:38:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 20:38:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 20:38:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-09-30 20:38:45,832 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-09-30 20:38:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:45,832 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-09-30 20:38:45,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 20:38:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-09-30 20:38:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 20:38:45,832 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:45,833 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:45,833 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:45,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-09-30 20:38:45,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:45,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:45,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:45,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:45,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:46,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:46,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:46,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:46,777 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:46,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:46,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:46,989 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:46,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 20:38:46,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 20:38:46,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 20:38:46,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:46,990 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-09-30 20:38:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:47,444 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-09-30 20:38:47,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:38:47,444 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-09-30 20:38:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:47,445 INFO L225 Difference]: With dead ends: 111 [2018-09-30 20:38:47,445 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 20:38:47,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:38:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 20:38:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 20:38:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 20:38:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-09-30 20:38:47,451 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-09-30 20:38:47,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:47,451 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-09-30 20:38:47,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 20:38:47,451 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-09-30 20:38:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-30 20:38:47,452 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:47,452 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:47,452 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:47,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:47,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-09-30 20:38:47,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:47,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:47,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:47,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:47,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:48,149 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:48,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:48,156 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:48,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-09-30 20:38:48,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:48,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:48,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:48,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 20:38:48,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 20:38:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 20:38:48,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:48,461 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-09-30 20:38:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:48,937 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-09-30 20:38:48,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:38:48,938 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-09-30 20:38:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:48,939 INFO L225 Difference]: With dead ends: 113 [2018-09-30 20:38:48,939 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 20:38:48,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:38:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 20:38:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 20:38:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 20:38:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-09-30 20:38:48,943 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-09-30 20:38:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:48,944 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-09-30 20:38:48,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 20:38:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-09-30 20:38:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 20:38:48,945 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:48,945 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:48,945 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:48,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-09-30 20:38:48,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:48,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:48,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:48,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:48,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:50,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:50,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:50,016 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:50,081 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:50,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:50,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:51,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:51,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 20:38:51,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:38:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:38:51,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:51,502 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-09-30 20:38:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:52,891 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-09-30 20:38:52,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 20:38:52,891 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-09-30 20:38:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:52,892 INFO L225 Difference]: With dead ends: 115 [2018-09-30 20:38:52,892 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 20:38:52,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-09-30 20:38:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 20:38:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 20:38:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 20:38:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-09-30 20:38:52,896 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-09-30 20:38:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:52,896 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-09-30 20:38:52,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:38:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-09-30 20:38:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 20:38:52,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:52,897 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:52,897 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:52,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:52,898 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-09-30 20:38:52,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:52,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:52,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:52,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:52,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:53,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:53,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:53,645 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:53,743 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-30 20:38:53,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:53,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:53,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:53,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 20:38:53,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 20:38:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 20:38:53,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:53,946 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-09-30 20:38:54,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:54,346 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-09-30 20:38:54,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:38:54,346 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-09-30 20:38:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:54,347 INFO L225 Difference]: With dead ends: 117 [2018-09-30 20:38:54,347 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 20:38:54,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:38:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 20:38:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 20:38:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 20:38:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-09-30 20:38:54,354 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-09-30 20:38:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:54,354 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-09-30 20:38:54,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 20:38:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-09-30 20:38:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 20:38:54,355 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:54,356 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:54,356 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:54,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-09-30 20:38:54,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:54,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:54,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:54,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:54,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:54,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:54,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:54,704 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:54,844 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-09-30 20:38:54,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:54,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:55,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:55,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 20:38:55,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 20:38:55,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 20:38:55,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:55,021 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-09-30 20:38:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:55,321 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-09-30 20:38:55,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 20:38:55,322 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-09-30 20:38:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:55,323 INFO L225 Difference]: With dead ends: 119 [2018-09-30 20:38:55,323 INFO L226 Difference]: Without dead ends: 105 [2018-09-30 20:38:55,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-30 20:38:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-30 20:38:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-30 20:38:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-09-30 20:38:55,330 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-09-30 20:38:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:55,330 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-09-30 20:38:55,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 20:38:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-09-30 20:38:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 20:38:55,331 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:55,331 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:55,331 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:55,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-09-30 20:38:55,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:55,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:55,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:55,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:55,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:55,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:55,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:55,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:55,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:55,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:55,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 20:38:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 20:38:55,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 20:38:55,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:55,946 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-09-30 20:38:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:56,128 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-09-30 20:38:56,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:38:56,129 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-09-30 20:38:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:56,130 INFO L225 Difference]: With dead ends: 121 [2018-09-30 20:38:56,130 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 20:38:56,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 20:38:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 20:38:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 20:38:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-09-30 20:38:56,136 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-09-30 20:38:56,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:56,136 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-09-30 20:38:56,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 20:38:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-09-30 20:38:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 20:38:56,137 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:56,137 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:56,137 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:56,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-09-30 20:38:56,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:56,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:56,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:56,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:56,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:56,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:56,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:56,688 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:56,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:56,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:56,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:56,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 20:38:56,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:38:56,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:38:56,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:56,898 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-09-30 20:38:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:57,420 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-09-30 20:38:57,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:38:57,421 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-09-30 20:38:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:57,421 INFO L225 Difference]: With dead ends: 123 [2018-09-30 20:38:57,422 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 20:38:57,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 20:38:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 20:38:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 20:38:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-09-30 20:38:57,429 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-09-30 20:38:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:57,429 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-09-30 20:38:57,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:38:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-09-30 20:38:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 20:38:57,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:57,430 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:57,430 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:57,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-09-30 20:38:57,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:57,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:57,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:57,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:57,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:57,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:57,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:57,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:57,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-09-30 20:38:57,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:57,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:58,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:58,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 20:38:58,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 20:38:58,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 20:38:58,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:58,134 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-09-30 20:38:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:58,493 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-09-30 20:38:58,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:38:58,493 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-09-30 20:38:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:58,495 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:38:58,495 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 20:38:58,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 20:38:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 20:38:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 20:38:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-09-30 20:38:58,501 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-09-30 20:38:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:58,501 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-09-30 20:38:58,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 20:38:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-09-30 20:38:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 20:38:58,502 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:58,502 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:58,503 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:58,503 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-09-30 20:38:58,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:58,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:58,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:58,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:58,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:58,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:58,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:58,910 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:58,993 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:58,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:58,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:38:59,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:59,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 20:38:59,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 20:38:59,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 20:38:59,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:59,213 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-09-30 20:38:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:59,633 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-09-30 20:38:59,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 20:38:59,634 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-09-30 20:38:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:59,635 INFO L225 Difference]: With dead ends: 127 [2018-09-30 20:38:59,635 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 20:38:59,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 20:38:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 20:38:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 20:38:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-09-30 20:38:59,641 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-09-30 20:38:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:59,641 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-09-30 20:38:59,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 20:38:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-09-30 20:38:59,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-30 20:38:59,642 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:59,643 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:38:59,643 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:59,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-09-30 20:38:59,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:59,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:59,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:59,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:59,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:00,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:00,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:00,053 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:00,196 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 20:39:00,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:00,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:00,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:00,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 20:39:00,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 20:39:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 20:39:00,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:00,609 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-09-30 20:39:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:00,954 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-09-30 20:39:00,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:39:00,955 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-09-30 20:39:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:00,956 INFO L225 Difference]: With dead ends: 129 [2018-09-30 20:39:00,956 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 20:39:00,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 20:39:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 20:39:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 20:39:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-09-30 20:39:00,962 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-09-30 20:39:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:00,963 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-09-30 20:39:00,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 20:39:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-09-30 20:39:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 20:39:00,963 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:00,964 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:00,964 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:00,964 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:00,964 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-09-30 20:39:00,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:00,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:00,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:00,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:00,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:01,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:01,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:01,279 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:01,403 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-30 20:39:01,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:01,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:01,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:01,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 20:39:01,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:39:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:39:01,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:01,640 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-09-30 20:39:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:02,039 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-09-30 20:39:02,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 20:39:02,039 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-09-30 20:39:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:02,040 INFO L225 Difference]: With dead ends: 131 [2018-09-30 20:39:02,040 INFO L226 Difference]: Without dead ends: 117 [2018-09-30 20:39:02,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-30 20:39:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-30 20:39:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 20:39:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-09-30 20:39:02,048 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-09-30 20:39:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:02,048 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-09-30 20:39:02,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:39:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-09-30 20:39:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 20:39:02,049 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:02,049 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:02,049 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:02,049 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-09-30 20:39:02,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:02,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:02,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:02,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:02,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:02,674 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:02,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:02,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:02,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:03,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:03,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 20:39:03,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 20:39:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 20:39:03,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:03,421 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-09-30 20:39:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:03,951 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-09-30 20:39:03,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:39:03,952 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-09-30 20:39:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:03,953 INFO L225 Difference]: With dead ends: 133 [2018-09-30 20:39:03,953 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 20:39:03,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:39:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 20:39:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 20:39:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 20:39:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-09-30 20:39:03,959 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-09-30 20:39:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:03,960 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-09-30 20:39:03,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 20:39:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-09-30 20:39:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 20:39:03,960 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:03,961 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:03,961 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:03,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-09-30 20:39:03,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:03,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:03,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:03,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:03,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:04,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:04,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:04,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:04,346 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:04,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:04,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:05,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:05,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 20:39:05,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 20:39:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 20:39:05,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:05,580 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-09-30 20:39:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:06,305 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-09-30 20:39:06,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 20:39:06,305 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-09-30 20:39:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:06,306 INFO L225 Difference]: With dead ends: 135 [2018-09-30 20:39:06,306 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 20:39:06,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:39:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 20:39:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 20:39:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 20:39:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-09-30 20:39:06,310 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-09-30 20:39:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:06,310 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-09-30 20:39:06,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 20:39:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-09-30 20:39:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-30 20:39:06,311 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:06,311 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:06,311 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:06,311 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:06,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-09-30 20:39:06,312 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:06,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:06,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:06,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:06,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:06,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:06,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:06,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:06,794 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-09-30 20:39:06,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:06,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:07,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:07,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 20:39:07,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 20:39:07,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 20:39:07,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:07,130 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-09-30 20:39:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:07,594 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-09-30 20:39:07,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:39:07,594 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-09-30 20:39:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:07,595 INFO L225 Difference]: With dead ends: 137 [2018-09-30 20:39:07,595 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:39:07,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:39:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 20:39:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 20:39:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-09-30 20:39:07,601 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-09-30 20:39:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:07,601 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-09-30 20:39:07,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 20:39:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-09-30 20:39:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 20:39:07,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:07,602 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:07,602 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:07,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:07,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-09-30 20:39:07,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:07,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:07,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:07,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:07,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:07,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:07,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:07,935 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:08,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:08,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:08,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:08,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:08,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 20:39:08,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:39:08,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:39:08,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:08,351 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-09-30 20:39:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:09,013 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-09-30 20:39:09,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:39:09,013 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-09-30 20:39:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:09,014 INFO L225 Difference]: With dead ends: 139 [2018-09-30 20:39:09,014 INFO L226 Difference]: Without dead ends: 125 [2018-09-30 20:39:09,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-30 20:39:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-30 20:39:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 20:39:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-09-30 20:39:09,018 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-09-30 20:39:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:09,019 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-09-30 20:39:09,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:39:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-09-30 20:39:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 20:39:09,019 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:09,019 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:09,019 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:09,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:09,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-09-30 20:39:09,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:09,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:09,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:09,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:09,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:09,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:09,337 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:09,352 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:09,564 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 20:39:09,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:09,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:09,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:09,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 20:39:09,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 20:39:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 20:39:09,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:09,892 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-09-30 20:39:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:10,400 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-09-30 20:39:10,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:39:10,401 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-09-30 20:39:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:10,401 INFO L225 Difference]: With dead ends: 141 [2018-09-30 20:39:10,401 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 20:39:10,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 20:39:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 20:39:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 20:39:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-09-30 20:39:10,407 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-09-30 20:39:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:10,407 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-09-30 20:39:10,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 20:39:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-09-30 20:39:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 20:39:10,407 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:10,408 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:10,408 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:10,408 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-09-30 20:39:10,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:10,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:10,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:10,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:10,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:10,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:10,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:10,947 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:11,084 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-09-30 20:39:11,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:11,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:11,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:11,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 20:39:11,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 20:39:11,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 20:39:11,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:11,313 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-09-30 20:39:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:11,834 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-09-30 20:39:11,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:39:11,834 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-09-30 20:39:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:11,835 INFO L225 Difference]: With dead ends: 143 [2018-09-30 20:39:11,835 INFO L226 Difference]: Without dead ends: 129 [2018-09-30 20:39:11,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-30 20:39:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-30 20:39:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 20:39:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-09-30 20:39:11,841 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-09-30 20:39:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:11,841 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-09-30 20:39:11,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 20:39:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-09-30 20:39:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 20:39:11,842 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:11,842 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:11,842 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:11,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-09-30 20:39:11,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:11,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:11,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:11,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:11,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:12,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:12,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:12,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:12,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:12,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:12,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 20:39:12,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 20:39:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 20:39:12,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:12,498 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-09-30 20:39:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:13,021 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-09-30 20:39:13,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:39:13,021 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-09-30 20:39:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:13,022 INFO L225 Difference]: With dead ends: 145 [2018-09-30 20:39:13,022 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 20:39:13,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 20:39:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 20:39:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 20:39:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-09-30 20:39:13,026 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-09-30 20:39:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:13,027 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-09-30 20:39:13,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 20:39:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-09-30 20:39:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 20:39:13,027 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:13,027 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:13,027 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:13,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-09-30 20:39:13,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:13,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:13,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:13,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:13,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:13,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:13,628 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:13,635 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:13,723 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:13,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:13,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:14,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:14,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 20:39:14,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:39:14,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:39:14,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:14,004 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-09-30 20:39:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:14,544 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-09-30 20:39:14,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:39:14,545 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-09-30 20:39:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:14,546 INFO L225 Difference]: With dead ends: 147 [2018-09-30 20:39:14,546 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 20:39:14,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 20:39:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 20:39:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 20:39:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-09-30 20:39:14,552 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-09-30 20:39:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:14,552 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-09-30 20:39:14,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:39:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-09-30 20:39:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-30 20:39:14,553 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:14,553 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:14,553 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:14,553 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:14,553 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-09-30 20:39:14,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:14,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:14,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:14,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:14,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:14,902 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:14,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:14,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:15,067 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-30 20:39:15,067 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:15,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:15,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:15,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 20:39:15,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 20:39:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 20:39:15,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:15,298 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-09-30 20:39:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:15,867 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-09-30 20:39:15,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:39:15,867 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-09-30 20:39:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:15,868 INFO L225 Difference]: With dead ends: 149 [2018-09-30 20:39:15,868 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 20:39:15,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 20:39:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 20:39:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 20:39:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-09-30 20:39:15,872 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-09-30 20:39:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:15,873 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-09-30 20:39:15,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 20:39:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-09-30 20:39:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 20:39:15,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:15,874 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:15,874 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:15,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:15,874 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-09-30 20:39:15,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:15,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:15,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:15,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:15,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:16,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:16,209 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:16,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:16,326 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:16,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:16,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:16,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:16,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 20:39:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 20:39:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 20:39:16,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:16,619 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-09-30 20:39:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:17,068 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-09-30 20:39:17,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 20:39:17,069 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-09-30 20:39:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:17,069 INFO L225 Difference]: With dead ends: 151 [2018-09-30 20:39:17,069 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 20:39:17,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 20:39:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 20:39:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 20:39:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-09-30 20:39:17,075 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-09-30 20:39:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:17,076 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-09-30 20:39:17,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 20:39:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-09-30 20:39:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-30 20:39:17,076 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:17,076 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:17,077 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:17,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-09-30 20:39:17,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:17,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:17,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:17,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:17,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:17,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:17,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:17,440 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:17,587 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-30 20:39:17,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:17,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:18,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:18,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 20:39:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 20:39:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 20:39:18,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:18,567 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-09-30 20:39:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:19,269 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-09-30 20:39:19,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:39:19,269 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-09-30 20:39:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:19,270 INFO L225 Difference]: With dead ends: 153 [2018-09-30 20:39:19,270 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 20:39:19,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:39:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 20:39:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 20:39:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 20:39:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-09-30 20:39:19,274 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-09-30 20:39:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:19,275 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-09-30 20:39:19,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 20:39:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-09-30 20:39:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 20:39:19,275 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:19,275 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:19,276 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:19,276 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:19,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-09-30 20:39:19,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:19,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:19,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:19,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:19,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:19,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:19,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:19,649 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:19,816 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-09-30 20:39:19,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:19,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:20,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:20,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 20:39:20,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:39:20,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:39:20,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:20,058 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-09-30 20:39:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:20,646 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-09-30 20:39:20,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:39:20,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-09-30 20:39:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:20,647 INFO L225 Difference]: With dead ends: 155 [2018-09-30 20:39:20,647 INFO L226 Difference]: Without dead ends: 141 [2018-09-30 20:39:20,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-30 20:39:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-30 20:39:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-30 20:39:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-09-30 20:39:20,653 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-09-30 20:39:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:20,653 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-09-30 20:39:20,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:39:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-09-30 20:39:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 20:39:20,654 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:20,654 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:20,655 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:20,655 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:20,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-09-30 20:39:20,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:20,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:20,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:20,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:20,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:21,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:21,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:21,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:21,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:21,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:21,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 20:39:21,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 20:39:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 20:39:21,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:21,360 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-09-30 20:39:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:21,983 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-09-30 20:39:21,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:39:21,983 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-09-30 20:39:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:21,984 INFO L225 Difference]: With dead ends: 157 [2018-09-30 20:39:21,984 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 20:39:21,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 20:39:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 20:39:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 20:39:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-09-30 20:39:21,990 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-09-30 20:39:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:21,991 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-09-30 20:39:21,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 20:39:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-09-30 20:39:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 20:39:21,991 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:21,992 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:21,992 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:21,992 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-09-30 20:39:21,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:21,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:21,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:21,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:21,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:22,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:22,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:22,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:22,453 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:22,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:22,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:22,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:22,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 20:39:22,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 20:39:22,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 20:39:22,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:22,698 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-09-30 20:39:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:23,395 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-09-30 20:39:23,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 20:39:23,396 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-09-30 20:39:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:23,397 INFO L225 Difference]: With dead ends: 159 [2018-09-30 20:39:23,397 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 20:39:23,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 20:39:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 20:39:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 20:39:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-09-30 20:39:23,402 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-09-30 20:39:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:23,402 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-09-30 20:39:23,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 20:39:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-09-30 20:39:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-30 20:39:23,403 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:23,403 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:23,403 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:23,403 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-09-30 20:39:23,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:23,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:23,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:23,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:23,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:23,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:23,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:23,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:24,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-09-30 20:39:24,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:24,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:24,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:24,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 20:39:24,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 20:39:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 20:39:24,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:24,379 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-09-30 20:39:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:25,099 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-09-30 20:39:25,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:39:25,099 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-09-30 20:39:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:25,100 INFO L225 Difference]: With dead ends: 161 [2018-09-30 20:39:25,100 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 20:39:25,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:25,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 20:39:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 20:39:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 20:39:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-09-30 20:39:25,111 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-09-30 20:39:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:25,112 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-09-30 20:39:25,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 20:39:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-09-30 20:39:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 20:39:25,113 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:25,113 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:25,113 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:25,113 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:25,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-09-30 20:39:25,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:25,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:25,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:25,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:25,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:25,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:25,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:25,526 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:25,624 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:25,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:25,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:26,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:26,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 20:39:26,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:39:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:39:26,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:26,114 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-09-30 20:39:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:26,795 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-09-30 20:39:26,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 20:39:26,796 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-09-30 20:39:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:26,797 INFO L225 Difference]: With dead ends: 163 [2018-09-30 20:39:26,797 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 20:39:26,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 20:39:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 20:39:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 20:39:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-09-30 20:39:26,804 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-09-30 20:39:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:26,804 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-09-30 20:39:26,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:39:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-09-30 20:39:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 20:39:26,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:26,805 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:26,806 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:26,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:26,806 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-09-30 20:39:26,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:26,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:26,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:26,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:26,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:27,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:27,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:27,356 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:27,542 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-30 20:39:27,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:27,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:27,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:27,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 20:39:27,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 20:39:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 20:39:27,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:27,826 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-09-30 20:39:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:28,306 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-09-30 20:39:28,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:39:28,306 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-09-30 20:39:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:28,307 INFO L225 Difference]: With dead ends: 165 [2018-09-30 20:39:28,307 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 20:39:28,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 20:39:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 20:39:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 20:39:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-09-30 20:39:28,314 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-09-30 20:39:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:28,315 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-09-30 20:39:28,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 20:39:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-09-30 20:39:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 20:39:28,316 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:28,316 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:28,316 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:28,316 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-09-30 20:39:28,316 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:28,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:28,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:28,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:28,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:29,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:29,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:29,375 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:29,557 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-30 20:39:29,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:29,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:29,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:29,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 20:39:29,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 20:39:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 20:39:29,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:29,855 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-09-30 20:39:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:30,525 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-09-30 20:39:30,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 20:39:30,525 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-09-30 20:39:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:30,526 INFO L225 Difference]: With dead ends: 167 [2018-09-30 20:39:30,526 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 20:39:30,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:39:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 20:39:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-30 20:39:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-30 20:39:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-09-30 20:39:30,531 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-09-30 20:39:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:30,531 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-09-30 20:39:30,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 20:39:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-09-30 20:39:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-30 20:39:30,532 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:30,532 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:30,532 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:30,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-09-30 20:39:30,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:30,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:30,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:30,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:30,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:30,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:30,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:30,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:31,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:31,338 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:31,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 20:39:31,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 20:39:31,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 20:39:31,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:31,339 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-09-30 20:39:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:32,044 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-09-30 20:39:32,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:39:32,045 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-09-30 20:39:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:32,046 INFO L225 Difference]: With dead ends: 169 [2018-09-30 20:39:32,046 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 20:39:32,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 20:39:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 20:39:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 20:39:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-09-30 20:39:32,051 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-09-30 20:39:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:32,051 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-09-30 20:39:32,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 20:39:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-09-30 20:39:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 20:39:32,052 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:32,052 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:32,052 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:32,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:32,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-09-30 20:39:32,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:32,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:32,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:32,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:32,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:32,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:32,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:32,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:32,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:32,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:33,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:33,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 20:39:33,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:39:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:39:33,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:33,121 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-09-30 20:39:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:33,964 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-09-30 20:39:33,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 20:39:33,964 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-09-30 20:39:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:33,965 INFO L225 Difference]: With dead ends: 171 [2018-09-30 20:39:33,965 INFO L226 Difference]: Without dead ends: 157 [2018-09-30 20:39:33,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-30 20:39:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-30 20:39:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-30 20:39:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-09-30 20:39:33,970 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-09-30 20:39:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:33,970 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-09-30 20:39:33,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:39:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-09-30 20:39:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-30 20:39:33,971 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:33,971 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:33,971 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:33,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-09-30 20:39:33,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:33,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:33,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:33,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:33,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:34,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:34,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:34,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:34,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-30 20:39:34,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:34,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:35,037 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:35,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 20:39:35,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 20:39:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 20:39:35,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:35,038 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-09-30 20:39:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:35,620 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-09-30 20:39:35,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:39:35,620 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-09-30 20:39:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:35,621 INFO L225 Difference]: With dead ends: 173 [2018-09-30 20:39:35,621 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 20:39:35,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 20:39:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 20:39:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 20:39:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-09-30 20:39:35,628 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-09-30 20:39:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:35,628 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-09-30 20:39:35,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 20:39:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-09-30 20:39:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 20:39:35,629 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:35,629 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:35,629 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:35,629 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-09-30 20:39:35,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:35,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:35,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:35,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:36,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:36,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:36,078 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:36,184 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:36,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:36,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:36,483 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:36,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 20:39:36,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 20:39:36,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 20:39:36,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:36,484 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-09-30 20:39:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:37,216 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-09-30 20:39:37,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 20:39:37,216 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-09-30 20:39:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:37,217 INFO L225 Difference]: With dead ends: 175 [2018-09-30 20:39:37,217 INFO L226 Difference]: Without dead ends: 161 [2018-09-30 20:39:37,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-30 20:39:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-30 20:39:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-30 20:39:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-09-30 20:39:37,224 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-09-30 20:39:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:37,224 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-09-30 20:39:37,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 20:39:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-09-30 20:39:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-30 20:39:37,225 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:37,226 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:37,226 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:37,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:37,226 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-09-30 20:39:37,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:37,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:37,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:37,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:37,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:37,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:37,665 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:37,873 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-30 20:39:37,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:37,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:38,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:38,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 20:39:38,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 20:39:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 20:39:38,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:38,204 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-09-30 20:39:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:38,943 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-09-30 20:39:38,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 20:39:38,944 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-09-30 20:39:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:38,945 INFO L225 Difference]: With dead ends: 177 [2018-09-30 20:39:38,945 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 20:39:38,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 20:39:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 20:39:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 20:39:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-09-30 20:39:38,953 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-09-30 20:39:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:38,953 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-09-30 20:39:38,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 20:39:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-09-30 20:39:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 20:39:38,954 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:38,954 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:38,954 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:38,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-09-30 20:39:38,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:38,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:38,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:38,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:38,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:39,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:39,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:39,642 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:39,879 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-09-30 20:39:39,879 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:39,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:40,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:40,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 20:39:40,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 20:39:40,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 20:39:40,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:40,159 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-09-30 20:39:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:40,651 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-09-30 20:39:40,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 20:39:40,651 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-09-30 20:39:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:40,652 INFO L225 Difference]: With dead ends: 179 [2018-09-30 20:39:40,652 INFO L226 Difference]: Without dead ends: 165 [2018-09-30 20:39:40,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-30 20:39:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-09-30 20:39:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-30 20:39:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-09-30 20:39:40,658 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-09-30 20:39:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:40,658 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-09-30 20:39:40,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 20:39:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-09-30 20:39:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-30 20:39:40,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:40,659 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:40,659 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:40,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-09-30 20:39:40,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:40,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:40,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:40,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:41,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:41,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:41,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:41,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:41,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:41,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 20:39:41,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 20:39:41,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 20:39:41,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:41,652 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-09-30 20:39:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:42,485 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-09-30 20:39:42,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:39:42,486 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-09-30 20:39:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:42,486 INFO L225 Difference]: With dead ends: 181 [2018-09-30 20:39:42,487 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 20:39:42,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 20:39:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 20:39:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 20:39:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-09-30 20:39:42,492 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-09-30 20:39:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:42,492 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-09-30 20:39:42,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 20:39:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-09-30 20:39:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 20:39:42,493 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:42,493 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:42,493 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:42,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:42,493 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-09-30 20:39:42,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:42,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:42,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:42,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:42,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:42,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:42,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:42,941 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:43,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:43,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:43,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:43,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:43,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 20:39:43,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 20:39:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 20:39:43,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:43,334 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-09-30 20:39:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:43,969 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-09-30 20:39:43,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 20:39:43,969 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-09-30 20:39:43,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:43,970 INFO L225 Difference]: With dead ends: 183 [2018-09-30 20:39:43,970 INFO L226 Difference]: Without dead ends: 169 [2018-09-30 20:39:43,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-30 20:39:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-30 20:39:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 20:39:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-09-30 20:39:43,975 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-09-30 20:39:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:43,975 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-09-30 20:39:43,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 20:39:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-09-30 20:39:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 20:39:43,976 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:43,976 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:43,976 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:43,977 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:43,977 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-09-30 20:39:43,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:43,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:43,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:43,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:43,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:44,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:44,796 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:44,805 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:45,032 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-09-30 20:39:45,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:45,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:45,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:45,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 20:39:45,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 20:39:45,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 20:39:45,324 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:45,324 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-09-30 20:39:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:45,828 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-09-30 20:39:45,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 20:39:45,828 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-09-30 20:39:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:45,829 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:39:45,829 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 20:39:45,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 20:39:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 20:39:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 20:39:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-09-30 20:39:45,834 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-09-30 20:39:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:45,834 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-09-30 20:39:45,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 20:39:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-09-30 20:39:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 20:39:45,835 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:45,835 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:45,835 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:45,835 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:45,836 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-09-30 20:39:45,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:45,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:45,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:45,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:45,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:46,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:46,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:46,569 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:46,683 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:46,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:46,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:46,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:46,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 20:39:46,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 20:39:46,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 20:39:46,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:46,999 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-09-30 20:39:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:47,517 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-09-30 20:39:47,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 20:39:47,517 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-09-30 20:39:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:47,518 INFO L225 Difference]: With dead ends: 187 [2018-09-30 20:39:47,518 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 20:39:47,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 20:39:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-30 20:39:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 20:39:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-09-30 20:39:47,524 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-09-30 20:39:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:47,524 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-09-30 20:39:47,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 20:39:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-09-30 20:39:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-30 20:39:47,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:47,525 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:47,525 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:47,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-09-30 20:39:47,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:47,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:47,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:47,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:48,016 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:48,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:48,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:48,249 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-09-30 20:39:48,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:48,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:48,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:48,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 20:39:48,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 20:39:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 20:39:48,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:48,539 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-09-30 20:39:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:48,999 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-09-30 20:39:49,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 20:39:49,000 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-09-30 20:39:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:49,001 INFO L225 Difference]: With dead ends: 189 [2018-09-30 20:39:49,001 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 20:39:49,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 20:39:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 20:39:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 20:39:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-09-30 20:39:49,008 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-09-30 20:39:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:49,009 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-09-30 20:39:49,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 20:39:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-09-30 20:39:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 20:39:49,010 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:49,010 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:49,010 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:49,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:49,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-09-30 20:39:49,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:49,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:49,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:49,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:49,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:49,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:49,809 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:50,039 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-09-30 20:39:50,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:50,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:50,343 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:50,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 20:39:50,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 20:39:50,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 20:39:50,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:50,345 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-09-30 20:39:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:50,987 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-09-30 20:39:50,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 20:39:50,988 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-09-30 20:39:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:50,988 INFO L225 Difference]: With dead ends: 191 [2018-09-30 20:39:50,989 INFO L226 Difference]: Without dead ends: 177 [2018-09-30 20:39:50,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-09-30 20:39:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-09-30 20:39:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-30 20:39:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-09-30 20:39:50,994 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-09-30 20:39:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:50,994 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-09-30 20:39:50,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 20:39:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-09-30 20:39:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-30 20:39:50,995 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:50,995 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:50,995 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:50,995 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-09-30 20:39:50,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:50,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:50,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:51,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:51,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:51,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:51,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:51,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:51,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 20:39:51,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 20:39:51,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 20:39:51,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:51,950 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-09-30 20:39:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:52,593 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-09-30 20:39:52,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 20:39:52,593 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-09-30 20:39:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:52,594 INFO L225 Difference]: With dead ends: 193 [2018-09-30 20:39:52,594 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 20:39:52,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 20:39:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 20:39:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 20:39:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-09-30 20:39:52,599 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-09-30 20:39:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:52,600 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-09-30 20:39:52,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 20:39:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-09-30 20:39:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 20:39:52,600 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:52,601 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:52,601 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:52,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-09-30 20:39:52,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:52,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:52,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:52,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:53,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:53,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:53,326 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:53,442 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:53,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:53,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:53,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:53,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 20:39:53,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 20:39:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 20:39:53,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:53,751 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-09-30 20:39:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:54,353 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-09-30 20:39:54,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 20:39:54,354 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-09-30 20:39:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:54,355 INFO L225 Difference]: With dead ends: 195 [2018-09-30 20:39:54,355 INFO L226 Difference]: Without dead ends: 181 [2018-09-30 20:39:54,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-30 20:39:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-30 20:39:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-30 20:39:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-09-30 20:39:54,364 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-09-30 20:39:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:54,364 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-09-30 20:39:54,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 20:39:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-09-30 20:39:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-30 20:39:54,365 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:54,365 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:54,366 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:54,366 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-09-30 20:39:54,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:54,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:54,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:54,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:55,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:55,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:55,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:55,334 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-09-30 20:39:55,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:55,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:55,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:55,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 20:39:55,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 20:39:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 20:39:55,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:55,743 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-09-30 20:39:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:56,169 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-09-30 20:39:56,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:39:56,170 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-09-30 20:39:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:56,171 INFO L225 Difference]: With dead ends: 197 [2018-09-30 20:39:56,171 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:39:56,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:39:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 20:39:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 20:39:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-09-30 20:39:56,178 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-09-30 20:39:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:56,178 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-09-30 20:39:56,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 20:39:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-09-30 20:39:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 20:39:56,180 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:56,180 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:56,180 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:56,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:56,180 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-09-30 20:39:56,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:56,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:56,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:56,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:56,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:56,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:56,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:56,735 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:56,849 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:56,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:56,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:57,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:57,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 20:39:57,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 20:39:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 20:39:57,173 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:57,174 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-09-30 20:39:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:57,893 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-09-30 20:39:57,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 20:39:57,893 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-09-30 20:39:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:57,894 INFO L225 Difference]: With dead ends: 199 [2018-09-30 20:39:57,894 INFO L226 Difference]: Without dead ends: 185 [2018-09-30 20:39:57,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-30 20:39:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-30 20:39:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-30 20:39:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-09-30 20:39:57,901 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-09-30 20:39:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:57,901 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-09-30 20:39:57,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 20:39:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-09-30 20:39:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-30 20:39:57,902 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:57,902 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:57,903 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:57,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-09-30 20:39:57,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:57,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:58,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:58,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:58,513 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:58,762 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-09-30 20:39:58,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:58,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:39:59,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:59,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 20:39:59,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 20:39:59,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 20:39:59,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:59,080 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-09-30 20:39:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:59,961 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-09-30 20:39:59,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 20:39:59,962 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-09-30 20:39:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:59,963 INFO L225 Difference]: With dead ends: 201 [2018-09-30 20:39:59,963 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 20:39:59,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 20:39:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 20:39:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 20:39:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-09-30 20:39:59,971 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-09-30 20:39:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:59,971 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-09-30 20:39:59,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 20:39:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-09-30 20:39:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 20:39:59,972 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:59,972 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:39:59,973 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:59,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:59,973 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-09-30 20:39:59,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:59,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:59,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:59,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:59,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:00,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:00,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:00,519 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:00,790 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-09-30 20:40:00,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:00,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:01,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:01,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 20:40:01,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 20:40:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 20:40:01,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:01,134 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-09-30 20:40:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:01,581 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-09-30 20:40:01,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 20:40:01,581 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-09-30 20:40:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:01,582 INFO L225 Difference]: With dead ends: 203 [2018-09-30 20:40:01,582 INFO L226 Difference]: Without dead ends: 189 [2018-09-30 20:40:01,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-09-30 20:40:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-09-30 20:40:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 20:40:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-09-30 20:40:01,590 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-09-30 20:40:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:01,590 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-09-30 20:40:01,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 20:40:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-09-30 20:40:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 20:40:01,591 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:01,591 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:01,591 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:01,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-09-30 20:40:01,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:01,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:01,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:01,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:01,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:02,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:02,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:02,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:02,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:02,604 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:02,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 20:40:02,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 20:40:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 20:40:02,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:02,606 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-09-30 20:40:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:03,093 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-09-30 20:40:03,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 20:40:03,093 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-09-30 20:40:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:03,094 INFO L225 Difference]: With dead ends: 205 [2018-09-30 20:40:03,094 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 20:40:03,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 20:40:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 20:40:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 20:40:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-09-30 20:40:03,101 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-09-30 20:40:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:03,101 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-09-30 20:40:03,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 20:40:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-09-30 20:40:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 20:40:03,102 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:03,102 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:03,102 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:03,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-09-30 20:40:03,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:03,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:03,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:03,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:03,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:03,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:03,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:03,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:03,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:04,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:04,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 20:40:04,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 20:40:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 20:40:04,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:04,118 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-09-30 20:40:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:05,065 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-09-30 20:40:05,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 20:40:05,066 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-09-30 20:40:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:05,066 INFO L225 Difference]: With dead ends: 207 [2018-09-30 20:40:05,066 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 20:40:05,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 20:40:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-30 20:40:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-30 20:40:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-09-30 20:40:05,072 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-09-30 20:40:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:05,072 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-09-30 20:40:05,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 20:40:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-09-30 20:40:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-30 20:40:05,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:05,073 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:05,073 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:05,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-09-30 20:40:05,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:05,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:05,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:05,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:05,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:05,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:05,756 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:06,040 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-09-30 20:40:06,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:06,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:06,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:06,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 20:40:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 20:40:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 20:40:06,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:06,378 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-09-30 20:40:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:06,898 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-09-30 20:40:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 20:40:06,898 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-09-30 20:40:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:06,899 INFO L225 Difference]: With dead ends: 209 [2018-09-30 20:40:06,899 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 20:40:06,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 20:40:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 20:40:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 20:40:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-09-30 20:40:06,904 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-09-30 20:40:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:06,905 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-09-30 20:40:06,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 20:40:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-09-30 20:40:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 20:40:06,905 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:06,906 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:06,906 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:06,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-09-30 20:40:06,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:06,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:06,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:06,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:06,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:07,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:07,472 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:07,480 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:07,609 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:07,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:07,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:07,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:07,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 20:40:07,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 20:40:07,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 20:40:07,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:07,945 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-09-30 20:40:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:08,785 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-09-30 20:40:08,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 20:40:08,785 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-09-30 20:40:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:08,786 INFO L225 Difference]: With dead ends: 211 [2018-09-30 20:40:08,786 INFO L226 Difference]: Without dead ends: 197 [2018-09-30 20:40:08,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-09-30 20:40:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-09-30 20:40:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-30 20:40:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-09-30 20:40:08,792 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-09-30 20:40:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:08,793 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-09-30 20:40:08,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 20:40:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-09-30 20:40:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-30 20:40:08,794 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:08,794 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:08,794 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:08,794 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:08,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-09-30 20:40:08,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:08,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:08,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:08,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:08,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:09,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:09,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:09,380 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:09,655 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-09-30 20:40:09,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:09,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:10,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:10,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 20:40:10,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 20:40:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 20:40:10,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:10,248 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-09-30 20:40:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:11,006 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-09-30 20:40:11,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 20:40:11,006 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-09-30 20:40:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:11,007 INFO L225 Difference]: With dead ends: 213 [2018-09-30 20:40:11,007 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 20:40:11,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 20:40:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 20:40:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 20:40:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-09-30 20:40:11,013 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-09-30 20:40:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:11,013 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-09-30 20:40:11,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 20:40:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-09-30 20:40:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 20:40:11,014 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:11,014 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:11,014 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:11,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-09-30 20:40:11,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:11,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:11,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:11,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:11,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:11,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:11,622 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:11,903 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-09-30 20:40:11,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:11,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:12,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:12,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 20:40:12,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 20:40:12,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 20:40:12,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:12,250 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-09-30 20:40:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:12,960 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-09-30 20:40:12,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 20:40:12,961 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-09-30 20:40:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:12,961 INFO L225 Difference]: With dead ends: 215 [2018-09-30 20:40:12,962 INFO L226 Difference]: Without dead ends: 201 [2018-09-30 20:40:12,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-30 20:40:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-09-30 20:40:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-30 20:40:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-09-30 20:40:12,967 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-09-30 20:40:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:12,967 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-09-30 20:40:12,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 20:40:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-09-30 20:40:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-30 20:40:12,968 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:12,968 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:12,968 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:12,969 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-09-30 20:40:12,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:12,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:12,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:12,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:12,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:13,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:13,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:13,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:13,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:14,072 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:14,072 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 20:40:14,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 20:40:14,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 20:40:14,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:14,074 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-09-30 20:40:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:14,877 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-09-30 20:40:14,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 20:40:14,877 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-09-30 20:40:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:14,878 INFO L225 Difference]: With dead ends: 217 [2018-09-30 20:40:14,878 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 20:40:14,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 20:40:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 20:40:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 20:40:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-09-30 20:40:14,885 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-09-30 20:40:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:14,886 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-09-30 20:40:14,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 20:40:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-09-30 20:40:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 20:40:14,886 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:14,886 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:14,887 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:14,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-09-30 20:40:14,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:14,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:14,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:14,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:15,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:15,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:15,684 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:15,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:15,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:15,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:16,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:16,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 20:40:16,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 20:40:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 20:40:16,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:16,199 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-09-30 20:40:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:17,006 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-09-30 20:40:17,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 20:40:17,006 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-09-30 20:40:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:17,007 INFO L225 Difference]: With dead ends: 219 [2018-09-30 20:40:17,007 INFO L226 Difference]: Without dead ends: 205 [2018-09-30 20:40:17,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-30 20:40:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-30 20:40:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-30 20:40:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-09-30 20:40:17,013 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-09-30 20:40:17,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:17,013 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-09-30 20:40:17,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 20:40:17,013 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-09-30 20:40:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-30 20:40:17,014 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:17,014 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:17,014 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:17,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:17,014 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-09-30 20:40:17,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:17,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:17,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:17,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:17,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:17,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:17,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:17,694 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:18,012 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-09-30 20:40:18,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:18,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:18,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:18,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 20:40:18,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 20:40:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 20:40:18,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:18,374 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-09-30 20:40:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:18,933 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-09-30 20:40:18,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 20:40:18,933 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-09-30 20:40:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:18,934 INFO L225 Difference]: With dead ends: 221 [2018-09-30 20:40:18,934 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 20:40:18,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 20:40:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 20:40:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 20:40:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-09-30 20:40:18,942 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-09-30 20:40:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:18,943 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-09-30 20:40:18,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 20:40:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-09-30 20:40:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 20:40:18,944 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:18,944 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:18,944 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:18,944 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-09-30 20:40:18,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:18,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:18,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:18,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:18,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:19,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:19,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:19,598 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:19,728 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:19,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:19,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:20,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:20,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 20:40:20,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 20:40:20,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 20:40:20,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:20,143 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-09-30 20:40:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:21,036 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-09-30 20:40:21,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 20:40:21,036 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-09-30 20:40:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:21,037 INFO L225 Difference]: With dead ends: 223 [2018-09-30 20:40:21,037 INFO L226 Difference]: Without dead ends: 209 [2018-09-30 20:40:21,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-30 20:40:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-30 20:40:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 20:40:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-09-30 20:40:21,043 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-09-30 20:40:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:21,044 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-09-30 20:40:21,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 20:40:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-09-30 20:40:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 20:40:21,044 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:21,045 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:21,045 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:21,045 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-09-30 20:40:21,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:21,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:21,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:21,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:21,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:21,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:21,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:21,720 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:22,034 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-09-30 20:40:22,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:22,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:22,395 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:22,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 20:40:22,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 20:40:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 20:40:22,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:22,397 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-09-30 20:40:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:22,975 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-09-30 20:40:22,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 20:40:22,976 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-09-30 20:40:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:22,976 INFO L225 Difference]: With dead ends: 225 [2018-09-30 20:40:22,977 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 20:40:22,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 20:40:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 20:40:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 20:40:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-09-30 20:40:22,985 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-09-30 20:40:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:22,986 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-09-30 20:40:22,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 20:40:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-09-30 20:40:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 20:40:22,987 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:22,987 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:22,987 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:22,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:22,988 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-09-30 20:40:22,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:22,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:22,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:22,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:22,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:23,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:23,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:23,666 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:23,976 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-09-30 20:40:23,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:23,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:24,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:24,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 20:40:24,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 20:40:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 20:40:24,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:24,344 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-09-30 20:40:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:25,336 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-09-30 20:40:25,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 20:40:25,336 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-09-30 20:40:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:25,337 INFO L225 Difference]: With dead ends: 227 [2018-09-30 20:40:25,337 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 20:40:25,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 20:40:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-30 20:40:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-30 20:40:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-09-30 20:40:25,343 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-09-30 20:40:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:25,344 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-09-30 20:40:25,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 20:40:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-09-30 20:40:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-30 20:40:25,344 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:25,345 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:25,345 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:25,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:25,345 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-09-30 20:40:25,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:25,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:25,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:25,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:25,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:26,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:26,064 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:26,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:26,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:26,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:26,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 20:40:26,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 20:40:26,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 20:40:26,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:26,591 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-09-30 20:40:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:27,226 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-09-30 20:40:27,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 20:40:27,226 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-09-30 20:40:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:27,227 INFO L225 Difference]: With dead ends: 229 [2018-09-30 20:40:27,227 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 20:40:27,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 20:40:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 20:40:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 20:40:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-09-30 20:40:27,236 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-09-30 20:40:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:27,236 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-09-30 20:40:27,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 20:40:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-09-30 20:40:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 20:40:27,237 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:27,237 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:27,238 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:27,238 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-09-30 20:40:27,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:27,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:27,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:27,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:27,914 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:28,061 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:28,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:28,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:28,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:28,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 20:40:28,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 20:40:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 20:40:28,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:28,464 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-09-30 20:40:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:29,371 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-09-30 20:40:29,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 20:40:29,372 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-09-30 20:40:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:29,373 INFO L225 Difference]: With dead ends: 231 [2018-09-30 20:40:29,373 INFO L226 Difference]: Without dead ends: 217 [2018-09-30 20:40:29,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-30 20:40:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-30 20:40:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-30 20:40:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-09-30 20:40:29,382 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-09-30 20:40:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:29,382 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-09-30 20:40:29,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 20:40:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-09-30 20:40:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-30 20:40:29,383 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:29,383 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:29,383 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:29,383 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:29,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-09-30 20:40:29,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:29,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:29,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:29,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:29,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:30,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:30,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:30,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:30,443 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-09-30 20:40:30,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:30,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:30,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:30,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 20:40:30,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 20:40:30,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 20:40:30,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:30,890 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-09-30 20:40:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:31,517 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-09-30 20:40:31,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 20:40:31,517 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-09-30 20:40:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:31,518 INFO L225 Difference]: With dead ends: 233 [2018-09-30 20:40:31,518 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 20:40:31,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 20:40:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 20:40:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 20:40:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-09-30 20:40:31,524 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-09-30 20:40:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:31,525 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-09-30 20:40:31,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 20:40:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-09-30 20:40:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 20:40:31,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:31,525 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:31,526 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:31,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-09-30 20:40:31,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:31,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:31,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:31,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:32,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:32,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:32,245 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:32,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:32,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:32,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:32,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:32,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 20:40:32,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 20:40:32,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 20:40:32,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:32,910 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-09-30 20:40:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:33,829 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-09-30 20:40:33,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 20:40:33,829 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-09-30 20:40:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:33,830 INFO L225 Difference]: With dead ends: 235 [2018-09-30 20:40:33,830 INFO L226 Difference]: Without dead ends: 221 [2018-09-30 20:40:33,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-30 20:40:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-09-30 20:40:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-30 20:40:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-09-30 20:40:33,835 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-09-30 20:40:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:33,836 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-09-30 20:40:33,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 20:40:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-09-30 20:40:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-30 20:40:33,837 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:33,837 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:33,837 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:33,837 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-09-30 20:40:33,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:33,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:33,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:33,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:33,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:34,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:34,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:34,596 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:34,946 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-09-30 20:40:34,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:34,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:35,336 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:35,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 20:40:35,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 20:40:35,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 20:40:35,338 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:35,338 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-09-30 20:40:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:36,475 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-09-30 20:40:36,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 20:40:36,476 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-09-30 20:40:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:36,476 INFO L225 Difference]: With dead ends: 237 [2018-09-30 20:40:36,477 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 20:40:36,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 20:40:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 20:40:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 20:40:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-09-30 20:40:36,485 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-09-30 20:40:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:36,485 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-09-30 20:40:36,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 20:40:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-09-30 20:40:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 20:40:36,486 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:36,486 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:36,486 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:36,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:36,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-09-30 20:40:36,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:36,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:36,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:36,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:36,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:37,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:37,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:37,265 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:37,606 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-09-30 20:40:37,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:37,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:37,989 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:37,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 20:40:37,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 20:40:37,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 20:40:37,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:37,991 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-09-30 20:40:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:39,037 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-09-30 20:40:39,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 20:40:39,038 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-09-30 20:40:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:39,039 INFO L225 Difference]: With dead ends: 239 [2018-09-30 20:40:39,039 INFO L226 Difference]: Without dead ends: 225 [2018-09-30 20:40:39,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-09-30 20:40:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-09-30 20:40:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-09-30 20:40:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-09-30 20:40:39,047 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-09-30 20:40:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:39,047 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-09-30 20:40:39,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 20:40:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-09-30 20:40:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-30 20:40:39,048 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:39,048 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:39,048 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:39,048 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-09-30 20:40:39,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:39,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:39,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:39,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:39,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:39,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:39,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:39,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:40,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:40,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:40,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 20:40:40,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 20:40:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 20:40:40,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:40,446 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-09-30 20:40:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:41,344 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-09-30 20:40:41,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 20:40:41,344 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-09-30 20:40:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:41,345 INFO L225 Difference]: With dead ends: 241 [2018-09-30 20:40:41,345 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 20:40:41,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 20:40:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 20:40:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 20:40:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-09-30 20:40:41,354 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-09-30 20:40:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:41,354 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-09-30 20:40:41,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 20:40:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-09-30 20:40:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 20:40:41,355 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:41,356 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:41,356 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:41,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-09-30 20:40:41,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:41,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:41,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:41,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:41,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:42,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:42,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:42,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:42,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:42,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:42,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:42,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:42,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 20:40:42,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 20:40:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 20:40:42,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:42,638 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-09-30 20:40:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:43,354 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-09-30 20:40:43,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 20:40:43,354 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-09-30 20:40:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:43,355 INFO L225 Difference]: With dead ends: 243 [2018-09-30 20:40:43,355 INFO L226 Difference]: Without dead ends: 229 [2018-09-30 20:40:43,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-09-30 20:40:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-09-30 20:40:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 20:40:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-09-30 20:40:43,362 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-09-30 20:40:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:43,362 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-09-30 20:40:43,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 20:40:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-09-30 20:40:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 20:40:43,363 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:43,363 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:43,363 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:43,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:43,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-09-30 20:40:43,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:43,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:43,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:43,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:43,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:44,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:44,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:44,104 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:44,492 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-09-30 20:40:44,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:44,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:44,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:44,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 20:40:44,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 20:40:44,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 20:40:44,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:44,891 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-09-30 20:40:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:45,684 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-09-30 20:40:45,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 20:40:45,685 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-09-30 20:40:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:45,685 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:40:45,685 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 20:40:45,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 20:40:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 20:40:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 20:40:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-09-30 20:40:45,693 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-09-30 20:40:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:45,693 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-09-30 20:40:45,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 20:40:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-09-30 20:40:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 20:40:45,694 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:45,694 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:45,694 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:45,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:45,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-09-30 20:40:45,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:45,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:45,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:45,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:45,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:46,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:46,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:46,523 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:46,678 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:46,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:46,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:47,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:47,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 20:40:47,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 20:40:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 20:40:47,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:47,089 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-09-30 20:40:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:48,172 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-09-30 20:40:48,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 20:40:48,172 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-09-30 20:40:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:48,173 INFO L225 Difference]: With dead ends: 247 [2018-09-30 20:40:48,173 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 20:40:48,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 20:40:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-09-30 20:40:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-09-30 20:40:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-09-30 20:40:48,179 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-09-30 20:40:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:48,180 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-09-30 20:40:48,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 20:40:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-09-30 20:40:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-30 20:40:48,180 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:48,180 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:48,181 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:48,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-09-30 20:40:48,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:48,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:48,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:48,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:48,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:48,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:48,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:48,936 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:49,310 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-09-30 20:40:49,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:49,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:49,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:49,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 20:40:49,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 20:40:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 20:40:49,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:49,721 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-09-30 20:40:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:51,129 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-09-30 20:40:51,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 20:40:51,129 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-09-30 20:40:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:51,130 INFO L225 Difference]: With dead ends: 249 [2018-09-30 20:40:51,130 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 20:40:51,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 20:40:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 20:40:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 20:40:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-09-30 20:40:51,136 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-09-30 20:40:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:51,136 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-09-30 20:40:51,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 20:40:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-09-30 20:40:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 20:40:51,137 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:51,137 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:51,137 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:51,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:51,137 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-09-30 20:40:51,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:51,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:51,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:51,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:51,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:51,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:51,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:51,871 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:52,284 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-09-30 20:40:52,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:52,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:52,731 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:52,731 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 20:40:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 20:40:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 20:40:52,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:52,733 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-09-30 20:40:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:53,689 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-09-30 20:40:53,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 20:40:53,689 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-09-30 20:40:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:53,690 INFO L225 Difference]: With dead ends: 251 [2018-09-30 20:40:53,690 INFO L226 Difference]: Without dead ends: 237 [2018-09-30 20:40:53,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-09-30 20:40:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-09-30 20:40:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-09-30 20:40:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-09-30 20:40:53,696 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-09-30 20:40:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:53,697 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-09-30 20:40:53,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 20:40:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-09-30 20:40:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-30 20:40:53,697 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:53,697 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:53,698 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:53,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-09-30 20:40:53,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:53,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:53,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:53,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:53,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:54,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:54,464 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:54,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:54,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:55,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:55,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 20:40:55,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 20:40:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 20:40:55,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:55,054 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-09-30 20:40:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:56,020 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-09-30 20:40:56,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 20:40:56,020 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-09-30 20:40:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:56,021 INFO L225 Difference]: With dead ends: 253 [2018-09-30 20:40:56,021 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 20:40:56,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 20:40:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 20:40:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 20:40:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-09-30 20:40:56,031 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-09-30 20:40:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:56,031 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-09-30 20:40:56,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 20:40:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-09-30 20:40:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 20:40:56,032 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:56,032 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:56,033 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:56,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-09-30 20:40:56,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:56,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:56,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:56,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:56,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:56,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:56,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:56,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:57,018 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:57,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:57,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:57,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:57,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 20:40:57,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 20:40:57,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 20:40:57,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:57,443 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-09-30 20:40:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:58,665 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-09-30 20:40:58,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 20:40:58,666 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-09-30 20:40:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:58,666 INFO L225 Difference]: With dead ends: 255 [2018-09-30 20:40:58,666 INFO L226 Difference]: Without dead ends: 241 [2018-09-30 20:40:58,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-09-30 20:40:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-09-30 20:40:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-09-30 20:40:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-09-30 20:40:58,673 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-09-30 20:40:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:58,673 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-09-30 20:40:58,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 20:40:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-09-30 20:40:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-30 20:40:58,674 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:58,674 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:40:58,674 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:58,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:58,674 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-09-30 20:40:58,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:58,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:58,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:58,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:58,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:40:59,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:59,454 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:59,462 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:59,902 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-09-30 20:40:59,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:59,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:00,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:00,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 20:41:00,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 20:41:00,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 20:41:00,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:00,337 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-09-30 20:41:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:01,593 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-09-30 20:41:01,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 20:41:01,593 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-09-30 20:41:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:01,594 INFO L225 Difference]: With dead ends: 257 [2018-09-30 20:41:01,594 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:41:01,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:41:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 20:41:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 20:41:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-09-30 20:41:01,601 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-09-30 20:41:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:01,601 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-09-30 20:41:01,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 20:41:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-09-30 20:41:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 20:41:01,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:01,602 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:01,602 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:01,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-09-30 20:41:01,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:01,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:01,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:01,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:01,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:02,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:02,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:02,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:02,562 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:02,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:02,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:03,113 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:03,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 20:41:03,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 20:41:03,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 20:41:03,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:03,115 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-09-30 20:41:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:04,300 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-09-30 20:41:04,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 20:41:04,301 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-09-30 20:41:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:04,301 INFO L225 Difference]: With dead ends: 259 [2018-09-30 20:41:04,301 INFO L226 Difference]: Without dead ends: 245 [2018-09-30 20:41:04,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-09-30 20:41:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-09-30 20:41:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-30 20:41:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-09-30 20:41:04,308 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-09-30 20:41:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:04,308 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-09-30 20:41:04,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 20:41:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-09-30 20:41:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-30 20:41:04,309 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:04,309 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:04,309 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:04,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-09-30 20:41:04,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:04,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:04,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:04,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:04,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:05,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:05,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:05,161 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:05,573 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-09-30 20:41:05,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:05,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:06,005 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:06,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 20:41:06,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 20:41:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 20:41:06,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:06,007 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 117 states. [2018-09-30 20:41:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:07,422 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-09-30 20:41:07,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 20:41:07,423 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 244 [2018-09-30 20:41:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:07,423 INFO L225 Difference]: With dead ends: 261 [2018-09-30 20:41:07,424 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 20:41:07,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 20:41:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 20:41:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 20:41:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-09-30 20:41:07,430 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 244 [2018-09-30 20:41:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:07,430 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-09-30 20:41:07,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 20:41:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-09-30 20:41:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 20:41:07,431 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:07,431 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:07,431 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:07,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1996536584, now seen corresponding path program 114 times [2018-09-30 20:41:07,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:07,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:07,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:07,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:07,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:08,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:08,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:08,258 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:08,672 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 116 check-sat command(s) [2018-09-30 20:41:08,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:08,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:09,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:09,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 20:41:09,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 20:41:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 20:41:09,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:09,094 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 118 states. [2018-09-30 20:41:10,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:10,274 INFO L93 Difference]: Finished difference Result 263 states and 267 transitions. [2018-09-30 20:41:10,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 20:41:10,274 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 246 [2018-09-30 20:41:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:10,275 INFO L225 Difference]: With dead ends: 263 [2018-09-30 20:41:10,275 INFO L226 Difference]: Without dead ends: 249 [2018-09-30 20:41:10,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-09-30 20:41:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-09-30 20:41:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 20:41:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-09-30 20:41:10,282 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 246 [2018-09-30 20:41:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:10,282 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-09-30 20:41:10,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 20:41:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-09-30 20:41:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 20:41:10,283 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:10,283 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:10,283 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:10,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 428110084, now seen corresponding path program 115 times [2018-09-30 20:41:10,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:10,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:10,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:10,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:10,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:11,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:11,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:11,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:11,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:11,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:11,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 20:41:11,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 20:41:11,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 20:41:11,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:11,853 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 119 states. [2018-09-30 20:41:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:12,984 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-09-30 20:41:12,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 20:41:12,984 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 248 [2018-09-30 20:41:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:12,985 INFO L225 Difference]: With dead ends: 265 [2018-09-30 20:41:12,985 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 20:41:12,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 20:41:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 20:41:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 20:41:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-09-30 20:41:12,992 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 248 [2018-09-30 20:41:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:12,992 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-09-30 20:41:12,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 20:41:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-09-30 20:41:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 20:41:12,993 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:12,993 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:12,993 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:12,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:12,993 INFO L82 PathProgramCache]: Analyzing trace with hash 703764480, now seen corresponding path program 116 times [2018-09-30 20:41:12,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:12,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:12,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:12,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:12,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:13,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:13,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:13,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:14,065 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:14,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:14,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:14,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:14,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 20:41:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 20:41:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 20:41:14,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:14,488 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 120 states. [2018-09-30 20:41:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:15,274 INFO L93 Difference]: Finished difference Result 267 states and 271 transitions. [2018-09-30 20:41:15,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 20:41:15,274 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 250 [2018-09-30 20:41:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:15,275 INFO L225 Difference]: With dead ends: 267 [2018-09-30 20:41:15,275 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 20:41:15,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 20:41:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-09-30 20:41:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-09-30 20:41:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-09-30 20:41:15,282 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 250 [2018-09-30 20:41:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:15,282 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-09-30 20:41:15,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 20:41:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-09-30 20:41:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-30 20:41:15,283 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:15,283 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:15,283 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:15,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -680333316, now seen corresponding path program 117 times [2018-09-30 20:41:15,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:15,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:15,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:15,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:15,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:16,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:16,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:16,139 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:16,620 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 119 check-sat command(s) [2018-09-30 20:41:16,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:16,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:17,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:17,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 20:41:17,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 20:41:17,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 20:41:17,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:17,094 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand 121 states. [2018-09-30 20:41:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:18,215 INFO L93 Difference]: Finished difference Result 269 states and 273 transitions. [2018-09-30 20:41:18,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 20:41:18,216 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 252 [2018-09-30 20:41:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:18,216 INFO L225 Difference]: With dead ends: 269 [2018-09-30 20:41:18,216 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 20:41:18,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 20:41:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 20:41:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 20:41:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-09-30 20:41:18,223 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 252 [2018-09-30 20:41:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:18,223 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-09-30 20:41:18,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 20:41:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-09-30 20:41:18,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 20:41:18,224 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:18,224 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:18,224 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:18,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash 641546488, now seen corresponding path program 118 times [2018-09-30 20:41:18,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:18,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:18,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:19,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:19,078 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:19,086 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:19,254 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:19,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:19,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:19,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:19,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 20:41:19,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 20:41:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 20:41:19,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:19,709 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 122 states. [2018-09-30 20:41:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:21,137 INFO L93 Difference]: Finished difference Result 271 states and 275 transitions. [2018-09-30 20:41:21,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 20:41:21,137 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 254 [2018-09-30 20:41:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:21,138 INFO L225 Difference]: With dead ends: 271 [2018-09-30 20:41:21,138 INFO L226 Difference]: Without dead ends: 257 [2018-09-30 20:41:21,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-09-30 20:41:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-09-30 20:41:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-09-30 20:41:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2018-09-30 20:41:21,148 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 254 [2018-09-30 20:41:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:21,149 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2018-09-30 20:41:21,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 20:41:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2018-09-30 20:41:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-30 20:41:21,150 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:21,150 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:21,150 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:21,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash -342281484, now seen corresponding path program 119 times [2018-09-30 20:41:21,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:21,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:21,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:21,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:21,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:22,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:22,315 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:22,322 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:22,805 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-09-30 20:41:22,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:22,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:23,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:23,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 20:41:23,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 20:41:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 20:41:23,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:23,323 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand 123 states. [2018-09-30 20:41:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:24,697 INFO L93 Difference]: Finished difference Result 273 states and 277 transitions. [2018-09-30 20:41:24,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 20:41:24,697 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 256 [2018-09-30 20:41:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:24,698 INFO L225 Difference]: With dead ends: 273 [2018-09-30 20:41:24,698 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 20:41:24,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:41:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 20:41:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 20:41:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 20:41:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2018-09-30 20:41:24,705 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 256 [2018-09-30 20:41:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:24,705 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 261 transitions. [2018-09-30 20:41:24,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 20:41:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 261 transitions. [2018-09-30 20:41:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 20:41:24,706 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:24,706 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:24,706 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:24,706 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash -908157456, now seen corresponding path program 120 times [2018-09-30 20:41:24,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:24,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:24,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:24,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:24,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:25,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:25,574 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:25,581 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:26,037 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 122 check-sat command(s) [2018-09-30 20:41:26,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:26,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:26,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:26,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 20:41:26,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 20:41:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 20:41:26,503 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:26,503 INFO L87 Difference]: Start difference. First operand 259 states and 261 transitions. Second operand 124 states. [2018-09-30 20:41:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:27,789 INFO L93 Difference]: Finished difference Result 275 states and 279 transitions. [2018-09-30 20:41:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 20:41:27,789 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 258 [2018-09-30 20:41:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:27,790 INFO L225 Difference]: With dead ends: 275 [2018-09-30 20:41:27,790 INFO L226 Difference]: Without dead ends: 261 [2018-09-30 20:41:27,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-09-30 20:41:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-09-30 20:41:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-09-30 20:41:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2018-09-30 20:41:27,797 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 258 [2018-09-30 20:41:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:27,797 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2018-09-30 20:41:27,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 20:41:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2018-09-30 20:41:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-30 20:41:27,798 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:27,798 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:27,798 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:27,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 745880044, now seen corresponding path program 121 times [2018-09-30 20:41:27,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:27,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:27,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:27,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:27,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:28,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:28,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:28,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:28,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:29,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:29,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-30 20:41:29,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 20:41:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 20:41:29,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:29,374 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand 125 states. [2018-09-30 20:41:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:30,268 INFO L93 Difference]: Finished difference Result 277 states and 281 transitions. [2018-09-30 20:41:30,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 20:41:30,268 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 260 [2018-09-30 20:41:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:30,269 INFO L225 Difference]: With dead ends: 277 [2018-09-30 20:41:30,269 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 20:41:30,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 20:41:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 20:41:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 20:41:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 265 transitions. [2018-09-30 20:41:30,276 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 265 transitions. Word has length 260 [2018-09-30 20:41:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:30,276 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 265 transitions. [2018-09-30 20:41:30,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 20:41:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 265 transitions. [2018-09-30 20:41:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 20:41:30,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:30,277 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:30,278 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:30,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1138018024, now seen corresponding path program 122 times [2018-09-30 20:41:30,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:30,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:30,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:30,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:30,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:31,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:31,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:31,180 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:31,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:31,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:31,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:32,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:32,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-30 20:41:32,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 20:41:32,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 20:41:32,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:32,242 INFO L87 Difference]: Start difference. First operand 263 states and 265 transitions. Second operand 126 states. [2018-09-30 20:41:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:33,549 INFO L93 Difference]: Finished difference Result 279 states and 283 transitions. [2018-09-30 20:41:33,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-30 20:41:33,549 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 262 [2018-09-30 20:41:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:33,550 INFO L225 Difference]: With dead ends: 279 [2018-09-30 20:41:33,550 INFO L226 Difference]: Without dead ends: 265 [2018-09-30 20:41:33,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:41:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-09-30 20:41:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-09-30 20:41:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-09-30 20:41:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-09-30 20:41:33,557 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 262 [2018-09-30 20:41:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:33,557 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-09-30 20:41:33,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 20:41:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-09-30 20:41:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-09-30 20:41:33,558 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:33,558 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:33,559 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:33,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:33,559 INFO L82 PathProgramCache]: Analyzing trace with hash 25494756, now seen corresponding path program 123 times [2018-09-30 20:41:33,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:33,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:33,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:33,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:33,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:34,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:34,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:34,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:34,968 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 125 check-sat command(s) [2018-09-30 20:41:34,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:34,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:35,439 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:35,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-30 20:41:35,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-30 20:41:35,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-30 20:41:35,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:35,442 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 127 states. [2018-09-30 20:41:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:37,036 INFO L93 Difference]: Finished difference Result 281 states and 285 transitions. [2018-09-30 20:41:37,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 20:41:37,037 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 264 [2018-09-30 20:41:37,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:37,037 INFO L225 Difference]: With dead ends: 281 [2018-09-30 20:41:37,037 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 20:41:37,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 20:41:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 20:41:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 20:41:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 269 transitions. [2018-09-30 20:41:37,044 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 269 transitions. Word has length 264 [2018-09-30 20:41:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:37,044 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 269 transitions. [2018-09-30 20:41:37,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-30 20:41:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 269 transitions. [2018-09-30 20:41:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 20:41:37,045 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:37,045 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:37,045 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:37,046 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:37,046 INFO L82 PathProgramCache]: Analyzing trace with hash 337490912, now seen corresponding path program 124 times [2018-09-30 20:41:37,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:37,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:37,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:37,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:37,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:38,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:38,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:38,012 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:38,186 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:38,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:38,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:38,657 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:38,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-30 20:41:38,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 20:41:38,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 20:41:38,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:38,660 INFO L87 Difference]: Start difference. First operand 267 states and 269 transitions. Second operand 128 states. [2018-09-30 20:41:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:39,861 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-09-30 20:41:39,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 20:41:39,862 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 266 [2018-09-30 20:41:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:39,863 INFO L225 Difference]: With dead ends: 283 [2018-09-30 20:41:39,863 INFO L226 Difference]: Without dead ends: 269 [2018-09-30 20:41:39,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-09-30 20:41:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-09-30 20:41:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-30 20:41:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 271 transitions. [2018-09-30 20:41:39,872 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 271 transitions. Word has length 266 [2018-09-30 20:41:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:39,872 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 271 transitions. [2018-09-30 20:41:39,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 20:41:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 271 transitions. [2018-09-30 20:41:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-30 20:41:39,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:39,873 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:39,874 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:39,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash -481913892, now seen corresponding path program 125 times [2018-09-30 20:41:39,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:39,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:39,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:39,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:39,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:40,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:40,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:40,799 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:41,295 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-09-30 20:41:41,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:41,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:41,774 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:41,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-30 20:41:41,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-30 20:41:41,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-30 20:41:41,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:41,776 INFO L87 Difference]: Start difference. First operand 269 states and 271 transitions. Second operand 129 states. [2018-09-30 20:41:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:43,457 INFO L93 Difference]: Finished difference Result 285 states and 289 transitions. [2018-09-30 20:41:43,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 20:41:43,457 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 268 [2018-09-30 20:41:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:43,458 INFO L225 Difference]: With dead ends: 285 [2018-09-30 20:41:43,458 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 20:41:43,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 20:41:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 20:41:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 20:41:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-09-30 20:41:43,467 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 268 [2018-09-30 20:41:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:43,467 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-09-30 20:41:43,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-30 20:41:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-09-30 20:41:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 20:41:43,468 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:43,468 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:43,468 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:43,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1950915368, now seen corresponding path program 126 times [2018-09-30 20:41:43,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:43,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:43,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:44,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:44,494 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:44,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:44,995 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 128 check-sat command(s) [2018-09-30 20:41:44,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:45,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:45,462 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:45,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-30 20:41:45,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 20:41:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 20:41:45,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:45,465 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 130 states. [2018-09-30 20:41:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:47,282 INFO L93 Difference]: Finished difference Result 287 states and 291 transitions. [2018-09-30 20:41:47,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-30 20:41:47,283 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 270 [2018-09-30 20:41:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:47,283 INFO L225 Difference]: With dead ends: 287 [2018-09-30 20:41:47,283 INFO L226 Difference]: Without dead ends: 273 [2018-09-30 20:41:47,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:41:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-30 20:41:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-09-30 20:41:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-09-30 20:41:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 275 transitions. [2018-09-30 20:41:47,290 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 275 transitions. Word has length 270 [2018-09-30 20:41:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:47,291 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 275 transitions. [2018-09-30 20:41:47,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-30 20:41:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 275 transitions. [2018-09-30 20:41:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-30 20:41:47,291 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:47,292 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:47,292 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:47,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:47,292 INFO L82 PathProgramCache]: Analyzing trace with hash -617093420, now seen corresponding path program 127 times [2018-09-30 20:41:47,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:47,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:47,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:47,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:47,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16530 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:48,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:48,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:48,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:48,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16530 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:48,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:48,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-09-30 20:41:48,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-30 20:41:48,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-30 20:41:48,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:48,947 INFO L87 Difference]: Start difference. First operand 273 states and 275 transitions. Second operand 131 states. [2018-09-30 20:41:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:50,712 INFO L93 Difference]: Finished difference Result 289 states and 293 transitions. [2018-09-30 20:41:50,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 20:41:50,713 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 272 [2018-09-30 20:41:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:50,713 INFO L225 Difference]: With dead ends: 289 [2018-09-30 20:41:50,713 INFO L226 Difference]: Without dead ends: 275 [2018-09-30 20:41:50,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-30 20:41:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-30 20:41:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-30 20:41:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 277 transitions. [2018-09-30 20:41:50,721 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 277 transitions. Word has length 272 [2018-09-30 20:41:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:50,721 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 277 transitions. [2018-09-30 20:41:50,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-30 20:41:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 277 transitions. [2018-09-30 20:41:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-30 20:41:50,722 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:50,722 INFO L375 BasicCegarLoop]: trace histogram [130, 129, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:50,722 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:50,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1285544400, now seen corresponding path program 128 times [2018-09-30 20:41:50,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:50,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:50,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:50,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:50,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16788 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:51,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:51,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:51,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:51,876 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:51,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:51,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16788 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:52,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:52,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-09-30 20:41:52,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 20:41:52,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 20:41:52,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:52,590 INFO L87 Difference]: Start difference. First operand 275 states and 277 transitions. Second operand 132 states. [2018-09-30 20:41:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:53,540 INFO L93 Difference]: Finished difference Result 291 states and 295 transitions. [2018-09-30 20:41:53,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-09-30 20:41:53,541 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 274 [2018-09-30 20:41:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:53,541 INFO L225 Difference]: With dead ends: 291 [2018-09-30 20:41:53,541 INFO L226 Difference]: Without dead ends: 277 [2018-09-30 20:41:53,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:41:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-09-30 20:41:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-09-30 20:41:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-09-30 20:41:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 279 transitions. [2018-09-30 20:41:53,549 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 279 transitions. Word has length 274 [2018-09-30 20:41:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:53,549 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 279 transitions. [2018-09-30 20:41:53,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 20:41:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 279 transitions. [2018-09-30 20:41:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-30 20:41:53,550 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:53,550 INFO L375 BasicCegarLoop]: trace histogram [131, 130, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:53,550 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:53,550 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash 64421324, now seen corresponding path program 129 times [2018-09-30 20:41:53,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:53,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:53,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:53,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:53,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 17048 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:54,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:54,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:54,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:55,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 131 check-sat command(s) [2018-09-30 20:41:55,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:55,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17048 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:55,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:55,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-09-30 20:41:55,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-09-30 20:41:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-09-30 20:41:55,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:55,702 INFO L87 Difference]: Start difference. First operand 277 states and 279 transitions. Second operand 133 states. [2018-09-30 20:41:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:57,336 INFO L93 Difference]: Finished difference Result 293 states and 297 transitions. [2018-09-30 20:41:57,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-30 20:41:57,337 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 276 [2018-09-30 20:41:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:57,337 INFO L225 Difference]: With dead ends: 293 [2018-09-30 20:41:57,337 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 20:41:57,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:41:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 20:41:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-30 20:41:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 20:41:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 281 transitions. [2018-09-30 20:41:57,344 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 281 transitions. Word has length 276 [2018-09-30 20:41:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:57,344 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 281 transitions. [2018-09-30 20:41:57,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-09-30 20:41:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 281 transitions. [2018-09-30 20:41:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 20:41:57,345 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:57,345 INFO L375 BasicCegarLoop]: trace histogram [132, 131, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:41:57,345 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:57,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:57,346 INFO L82 PathProgramCache]: Analyzing trace with hash -908782904, now seen corresponding path program 130 times [2018-09-30 20:41:57,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:57,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:57,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:57,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:57,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17310 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:58,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:58,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:58,402 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:58,585 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:58,585 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:58,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17310 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:41:59,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:59,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-09-30 20:41:59,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-09-30 20:41:59,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-09-30 20:41:59,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:59,093 INFO L87 Difference]: Start difference. First operand 279 states and 281 transitions. Second operand 134 states. [2018-09-30 20:42:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:00,852 INFO L93 Difference]: Finished difference Result 295 states and 299 transitions. [2018-09-30 20:42:00,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-30 20:42:00,852 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 278 [2018-09-30 20:42:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:00,853 INFO L225 Difference]: With dead ends: 295 [2018-09-30 20:42:00,853 INFO L226 Difference]: Without dead ends: 281 [2018-09-30 20:42:00,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:42:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-09-30 20:42:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-09-30 20:42:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-09-30 20:42:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2018-09-30 20:42:00,865 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 278 [2018-09-30 20:42:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:00,865 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 283 transitions. [2018-09-30 20:42:00,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-09-30 20:42:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 283 transitions. [2018-09-30 20:42:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-09-30 20:42:00,866 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:00,866 INFO L375 BasicCegarLoop]: trace histogram [133, 132, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:42:00,867 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:00,867 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:00,867 INFO L82 PathProgramCache]: Analyzing trace with hash 144824516, now seen corresponding path program 131 times [2018-09-30 20:42:00,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:00,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:00,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:00,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:00,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17574 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:01,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:01,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:01,984 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:42:02,571 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 133 check-sat command(s) [2018-09-30 20:42:02,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:02,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17574 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:03,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:03,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-09-30 20:42:03,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-09-30 20:42:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-09-30 20:42:03,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:03,129 INFO L87 Difference]: Start difference. First operand 281 states and 283 transitions. Second operand 135 states. [2018-09-30 20:42:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:05,012 INFO L93 Difference]: Finished difference Result 297 states and 301 transitions. [2018-09-30 20:42:05,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-09-30 20:42:05,012 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 280 [2018-09-30 20:42:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:05,013 INFO L225 Difference]: With dead ends: 297 [2018-09-30 20:42:05,013 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 20:42:05,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:42:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 20:42:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-30 20:42:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-30 20:42:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 285 transitions. [2018-09-30 20:42:05,025 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 285 transitions. Word has length 280 [2018-09-30 20:42:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:05,025 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 285 transitions. [2018-09-30 20:42:05,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-09-30 20:42:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 285 transitions. [2018-09-30 20:42:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-30 20:42:05,026 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:05,026 INFO L375 BasicCegarLoop]: trace histogram [134, 133, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:42:05,027 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:05,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash -950726720, now seen corresponding path program 132 times [2018-09-30 20:42:05,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:05,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:05,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:05,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:05,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 17840 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:06,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:06,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:06,090 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:42:06,639 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) [2018-09-30 20:42:06,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:06,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17840 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:07,150 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:07,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-09-30 20:42:07,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 20:42:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 20:42:07,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:07,152 INFO L87 Difference]: Start difference. First operand 283 states and 285 transitions. Second operand 136 states. [2018-09-30 20:42:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:08,837 INFO L93 Difference]: Finished difference Result 299 states and 303 transitions. [2018-09-30 20:42:08,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-30 20:42:08,838 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 282 [2018-09-30 20:42:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:08,838 INFO L225 Difference]: With dead ends: 299 [2018-09-30 20:42:08,838 INFO L226 Difference]: Without dead ends: 285 [2018-09-30 20:42:08,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:42:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-09-30 20:42:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-09-30 20:42:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-09-30 20:42:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2018-09-30 20:42:08,845 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 282 [2018-09-30 20:42:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:08,846 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2018-09-30 20:42:08,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 20:42:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2018-09-30 20:42:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-30 20:42:08,846 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:08,846 INFO L375 BasicCegarLoop]: trace histogram [135, 134, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:42:08,847 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:08,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1508476996, now seen corresponding path program 133 times [2018-09-30 20:42:08,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:08,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:08,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:08,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:08,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18108 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:09,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:09,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:09,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:10,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18108 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:10,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:10,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-09-30 20:42:10,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-09-30 20:42:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-09-30 20:42:10,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:10,588 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand 137 states. [2018-09-30 20:42:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:12,264 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2018-09-30 20:42:12,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-30 20:42:12,265 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 284 [2018-09-30 20:42:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:12,266 INFO L225 Difference]: With dead ends: 301 [2018-09-30 20:42:12,266 INFO L226 Difference]: Without dead ends: 287 [2018-09-30 20:42:12,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:42:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-30 20:42:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-30 20:42:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-30 20:42:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 289 transitions. [2018-09-30 20:42:12,273 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 289 transitions. Word has length 284 [2018-09-30 20:42:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:12,273 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 289 transitions. [2018-09-30 20:42:12,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-09-30 20:42:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 289 transitions. [2018-09-30 20:42:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-30 20:42:12,274 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:12,275 INFO L375 BasicCegarLoop]: trace histogram [136, 135, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-30 20:42:12,275 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:12,275 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -635580232, now seen corresponding path program 134 times [2018-09-30 20:42:12,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:12,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:12,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:12,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:12,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18378 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:13,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:13,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:13,515 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:42:13,697 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:42:13,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:13,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18378 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:42:14,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:14,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-09-30 20:42:14,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-09-30 20:42:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-09-30 20:42:14,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:14,236 INFO L87 Difference]: Start difference. First operand 287 states and 289 transitions. Second operand 138 states. Received shutdown request... [2018-09-30 20:42:14,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:42:14,747 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:42:14,754 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:42:14,754 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:42:14 BoogieIcfgContainer [2018-09-30 20:42:14,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:42:14,755 INFO L168 Benchmark]: Toolchain (without parser) took 242307.51 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 598.2 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -213.4 MB). Peak memory consumption was 384.9 MB. Max. memory is 7.1 GB. [2018-09-30 20:42:14,757 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 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. [2018-09-30 20:42:14,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.32 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. [2018-09-30 20:42:14,758 INFO L168 Benchmark]: Boogie Preprocessor took 21.38 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. [2018-09-30 20:42:14,758 INFO L168 Benchmark]: RCFGBuilder took 376.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:42:14,764 INFO L168 Benchmark]: TraceAbstraction took 241862.27 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 598.2 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -234.5 MB). Peak memory consumption was 363.7 MB. Max. memory is 7.1 GB. [2018-09-30 20:42:14,767 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 0.29 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 41.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.38 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 376.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241862.27 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 598.2 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -234.5 MB). Peak memory consumption was 363.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was constructing difference of abstraction (287states) and FLOYD_HOARE automaton (currently 85 states, 138 states before enhancement), while ReachableStatesComputation was computing reachable states (165 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 241.7s OverallTime, 138 OverallIterations, 136 TraceHistogramMax, 92.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1235 SDtfs, 31 SDslu, 32346 SDs, 0 SdLazy, 18643 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29837 GetRequests, 20515 SyntacticMatches, 0 SemanticMatches, 9322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=137, 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: 0.8s AutomataMinimizationTime, 137 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.5s SsaConstructionTime, 26.4s SatisfiabilityAnalysisTime, 112.0s InterpolantComputationTime, 41051 NumberOfCodeBlocks, 41051 NumberOfCodeBlocksAsserted, 4850 NumberOfCheckSat, 40778 ConstructedInterpolants, 0 QuantifiedInterpolants, 22329116 SizeOfPredicates, 135 NumberOfNonLiveVariables, 100536 ConjunctsInSsa, 9450 ConjunctsInUnsatCore, 273 InterpolantComputations, 3 PerfectInterpolantSequences, 4836/1681716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-42-14-778.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-42-14-778.csv Completed graceful shutdown