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-b2fde6a [2018-09-28 10:28:07,282 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:28:07,284 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:28:07,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:28:07,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:28:07,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:28:07,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:28:07,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:28:07,312 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:28:07,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:28:07,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-28 10:28:07,359 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 [2018-09-28 10:28:07,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:28:07,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:28:07,386 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:28:07,386 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:28:07,390 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:28:07,390 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:28:07,390 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:28:07,391 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:28:07,391 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:28:07,391 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:28:07,391 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:28:07,391 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:28:07,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:28:07,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:28:07,392 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:28:07,392 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:28:07,392 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:28:07,393 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:28:07,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:28:07,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:28:07,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:28:07,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:28:07,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:28:07,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:28:07,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:28:07,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:28:07,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:28:07,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:28:07,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:28:07,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:28:07,396 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 10:28:07,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:28:07,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:28:07,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:28:07,482 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:28:07,482 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:28:07,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-28 10:28:07,483 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-09-28 10:28:07,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:28:07,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:28:07,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:28:07,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:28:07,562 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:28:07,584 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,597 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:28:07,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:28:07,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:28:07,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:28:07,618 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,618 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,619 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,620 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,623 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,626 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,627 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 28.09 10:28:07" (1/1) ... [2018-09-28 10:28:07,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:28:07,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:28:07,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:28:07,630 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:28:07,631 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 28.09 10:28:07" (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 [2018-09-28 10:28:07,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-28 10:28:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-28 10:28:07,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-28 10:28:07,977 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-28 10:28:07,978 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:28:07 BoogieIcfgContainer [2018-09-28 10:28:07,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:28:07,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:28:07,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:28:07,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:28:07,983 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 28.09 10:28:07" (1/2) ... [2018-09-28 10:28:07,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b510851 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:28:07, skipping insertion in model container [2018-09-28 10:28:07,984 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 28.09 10:28:07" (2/2) ... [2018-09-28 10:28:07,986 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-09-28 10:28:07,996 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:28:08,007 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:28:08,065 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:28:08,066 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:28:08,066 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:28:08,066 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:28:08,066 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:28:08,067 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:28:08,067 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:28:08,067 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:28:08,067 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:28:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-28 10:28:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-28 10:28:08,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:08,094 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:28:08,096 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:08,109 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:08,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-09-28 10:28:08,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:08,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:08,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:08,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:28:08,262 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:28:08,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:28:08,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:28:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:28:08,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:08,286 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-28 10:28:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:08,470 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-09-28 10:28:08,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:28:08,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-28 10:28:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:08,491 INFO L225 Difference]: With dead ends: 17 [2018-09-28 10:28:08,491 INFO L226 Difference]: Without dead ends: 10 [2018-09-28 10:28:08,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-28 10:28:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-28 10:28:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-28 10:28:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-09-28 10:28:08,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-09-28 10:28:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:08,535 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-09-28 10:28:08,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:28:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-09-28 10:28:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-28 10:28:08,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:08,536 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:28:08,536 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:08,537 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:08,537 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-09-28 10:28:08,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:08,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:08,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:08,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:28:08,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:08,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:08,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:08,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:28:08,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:08,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-28 10:28:08,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-28 10:28:08,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-28 10:28:08,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:08,719 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-09-28 10:28:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:08,859 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-09-28 10:28:08,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-28 10:28:08,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-09-28 10:28:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:08,864 INFO L225 Difference]: With dead ends: 17 [2018-09-28 10:28:08,864 INFO L226 Difference]: Without dead ends: 12 [2018-09-28 10:28:08,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-28 10:28:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-28 10:28:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-28 10:28:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-09-28 10:28:08,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-09-28 10:28:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:08,871 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-09-28 10:28:08,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-28 10:28:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-09-28 10:28:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-28 10:28:08,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:08,873 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:28:08,873 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:08,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-09-28 10:28:08,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:08,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:08,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:08,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:28:08,982 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:28:08,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-28 10:28:08,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:28:08,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:28:08,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:08,984 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-09-28 10:28:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:09,448 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-09-28 10:28:09,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:28:09,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-28 10:28:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:09,451 INFO L225 Difference]: With dead ends: 32 [2018-09-28 10:28:09,451 INFO L226 Difference]: Without dead ends: 27 [2018-09-28 10:28:09,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-28 10:28:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-09-28 10:28:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-28 10:28:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-09-28 10:28:09,459 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-09-28 10:28:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:09,460 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-09-28 10:28:09,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:28:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-09-28 10:28:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-28 10:28:09,461 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:09,461 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:28:09,462 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:09,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-09-28 10:28:09,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:09,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:09,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:09,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:09,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-28 10:28:09,578 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:28:09,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-28 10:28:09,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-28 10:28:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-28 10:28:09,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:09,579 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-09-28 10:28:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:09,756 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-09-28 10:28:09,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:28:09,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-28 10:28:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:09,758 INFO L225 Difference]: With dead ends: 26 [2018-09-28 10:28:09,759 INFO L226 Difference]: Without dead ends: 24 [2018-09-28 10:28:09,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-28 10:28:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-09-28 10:28:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-28 10:28:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-28 10:28:09,766 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-09-28 10:28:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:09,766 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-28 10:28:09,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-28 10:28:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-28 10:28:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:28:09,768 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:09,768 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-09-28 10:28:09,768 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:09,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-09-28 10:28:09,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:09,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:09,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:09,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:09,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:09,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:09,839 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 [2018-09-28 10:28:09,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:09,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:09,963 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:09,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-28 10:28:09,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:28:09,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:28:09,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:09,965 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-09-28 10:28:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:10,040 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-28 10:28:10,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:28:10,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-28 10:28:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:10,042 INFO L225 Difference]: With dead ends: 37 [2018-09-28 10:28:10,042 INFO L226 Difference]: Without dead ends: 23 [2018-09-28 10:28:10,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-28 10:28:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-28 10:28:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-28 10:28:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-28 10:28:10,057 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-09-28 10:28:10,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:10,057 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-28 10:28:10,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:28:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-28 10:28:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-28 10:28:10,058 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:10,058 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:10,058 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:10,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:10,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-09-28 10:28:10,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:10,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:10,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:10,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:10,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:10,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:10,281 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 [2018-09-28 10:28:10,297 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:10,350 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:10,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:10,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:10,468 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:10,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-28 10:28:10,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 10:28:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 10:28:10,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:10,469 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-09-28 10:28:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:10,967 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-28 10:28:10,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:28:10,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-09-28 10:28:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:10,968 INFO L225 Difference]: With dead ends: 39 [2018-09-28 10:28:10,968 INFO L226 Difference]: Without dead ends: 25 [2018-09-28 10:28:10,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-28 10:28:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-28 10:28:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-28 10:28:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-28 10:28:10,974 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-09-28 10:28:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:10,974 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-28 10:28:10,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 10:28:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-28 10:28:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-28 10:28:10,975 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:10,975 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:10,976 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:10,976 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-09-28 10:28:10,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:10,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:10,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:10,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:10,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:11,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:11,060 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 [2018-09-28 10:28:11,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:11,162 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-28 10:28:11,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:11,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:11,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:11,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-28 10:28:11,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:28:11,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:28:11,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:11,303 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-09-28 10:28:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:11,410 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-28 10:28:11,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:28:11,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-09-28 10:28:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:11,418 INFO L225 Difference]: With dead ends: 41 [2018-09-28 10:28:11,418 INFO L226 Difference]: Without dead ends: 27 [2018-09-28 10:28:11,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-28 10:28:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-28 10:28:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-28 10:28:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-28 10:28:11,428 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-09-28 10:28:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:11,428 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-28 10:28:11,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:28:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-28 10:28:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-28 10:28:11,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:11,431 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:11,431 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:11,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-09-28 10:28:11,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:11,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:11,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:11,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:11,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:11,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:11,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:11,585 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:11,613 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:11,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:11,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:11,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:11,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-28 10:28:11,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:28:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:28:11,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:11,716 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-09-28 10:28:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:11,858 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-28 10:28:11,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-28 10:28:11,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-28 10:28:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:11,861 INFO L225 Difference]: With dead ends: 43 [2018-09-28 10:28:11,861 INFO L226 Difference]: Without dead ends: 29 [2018-09-28 10:28:11,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-28 10:28:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-28 10:28:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-28 10:28:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-09-28 10:28:11,867 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-09-28 10:28:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:11,868 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-09-28 10:28:11,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:28:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-09-28 10:28:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-28 10:28:11,869 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:11,869 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:11,869 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:11,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-09-28 10:28:11,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:11,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:11,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:11,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:11,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:11,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:11,993 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 [2018-09-28 10:28:12,005 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:12,046 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-28 10:28:12,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:12,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:12,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:12,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-28 10:28:12,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:28:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:28:12,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:12,133 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-09-28 10:28:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:12,261 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-28 10:28:12,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-28 10:28:12,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-28 10:28:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:12,264 INFO L225 Difference]: With dead ends: 45 [2018-09-28 10:28:12,264 INFO L226 Difference]: Without dead ends: 31 [2018-09-28 10:28:12,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-28 10:28:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-28 10:28:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-28 10:28:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-28 10:28:12,270 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-09-28 10:28:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:12,271 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-28 10:28:12,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:28:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-28 10:28:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-28 10:28:12,272 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:12,272 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:12,272 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:12,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:12,273 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-09-28 10:28:12,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:12,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:12,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:12,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:12,388 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 [2018-09-28 10:28:12,395 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:12,511 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-28 10:28:12,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:12,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:12,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:12,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-28 10:28:12,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:28:12,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:28:12,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:12,751 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-09-28 10:28:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:12,836 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-09-28 10:28:12,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-28 10:28:12,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-09-28 10:28:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:12,838 INFO L225 Difference]: With dead ends: 47 [2018-09-28 10:28:12,839 INFO L226 Difference]: Without dead ends: 33 [2018-09-28 10:28:12,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-28 10:28:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-28 10:28:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-28 10:28:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-09-28 10:28:12,846 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-09-28 10:28:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:12,847 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-09-28 10:28:12,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:28:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-09-28 10:28:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-28 10:28:12,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:12,848 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:12,848 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:12,848 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:12,848 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-09-28 10:28:12,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:12,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:12,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:12,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:12,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:12,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:12,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:12,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:13,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:13,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:13,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-28 10:28:13,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:28:13,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:28:13,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:13,095 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-09-28 10:28:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:13,196 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-09-28 10:28:13,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-28 10:28:13,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-09-28 10:28:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:13,199 INFO L225 Difference]: With dead ends: 49 [2018-09-28 10:28:13,199 INFO L226 Difference]: Without dead ends: 35 [2018-09-28 10:28:13,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:13,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-28 10:28:13,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-28 10:28:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-28 10:28:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-09-28 10:28:13,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-09-28 10:28:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:13,206 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-09-28 10:28:13,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:28:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-09-28 10:28:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-28 10:28:13,207 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:13,207 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:13,207 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:13,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-09-28 10:28:13,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:13,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:13,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:13,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:13,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:13,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:13,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:13,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:13,509 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:13,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:13,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:13,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:13,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-28 10:28:13,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-28 10:28:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-28 10:28:13,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:13,593 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-09-28 10:28:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:13,706 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-09-28 10:28:13,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:28:13,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-09-28 10:28:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:13,710 INFO L225 Difference]: With dead ends: 51 [2018-09-28 10:28:13,710 INFO L226 Difference]: Without dead ends: 37 [2018-09-28 10:28:13,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-28 10:28:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-28 10:28:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-28 10:28:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-09-28 10:28:13,719 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-09-28 10:28:13,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:13,719 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-09-28 10:28:13,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-28 10:28:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-09-28 10:28:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-28 10:28:13,720 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:13,721 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:13,721 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:13,721 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-09-28 10:28:13,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:13,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:13,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:13,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:13,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:13,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:13,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:13,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:14,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-28 10:28:14,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:14,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:14,207 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:14,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-28 10:28:14,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:28:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:28:14,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:14,208 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-09-28 10:28:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:14,527 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-09-28 10:28:14,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:28:14,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-09-28 10:28:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:14,529 INFO L225 Difference]: With dead ends: 53 [2018-09-28 10:28:14,529 INFO L226 Difference]: Without dead ends: 39 [2018-09-28 10:28:14,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-28 10:28:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-28 10:28:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-28 10:28:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-09-28 10:28:14,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-09-28 10:28:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:14,536 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-09-28 10:28:14,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:28:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-09-28 10:28:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-28 10:28:14,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:14,537 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:14,538 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:14,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:14,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-09-28 10:28:14,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:14,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:14,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:14,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:14,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:14,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:14,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:14,735 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:14,760 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:14,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:14,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:14,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:14,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-28 10:28:14,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:28:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:28:14,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:14,917 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-09-28 10:28:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:15,090 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-09-28 10:28:15,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:28:15,091 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-09-28 10:28:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:15,092 INFO L225 Difference]: With dead ends: 55 [2018-09-28 10:28:15,092 INFO L226 Difference]: Without dead ends: 41 [2018-09-28 10:28:15,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-28 10:28:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-28 10:28:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-28 10:28:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-09-28 10:28:15,098 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-09-28 10:28:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:15,099 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-09-28 10:28:15,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:28:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-09-28 10:28:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-28 10:28:15,100 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:15,100 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:15,100 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:15,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:15,101 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-09-28 10:28:15,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:15,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:15,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:15,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:15,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:15,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:15,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:15,453 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:15,544 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-28 10:28:15,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:15,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:15,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:15,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-28 10:28:15,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:28:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:28:15,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:15,678 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-09-28 10:28:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:15,798 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-09-28 10:28:15,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-28 10:28:15,805 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-09-28 10:28:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:15,805 INFO L225 Difference]: With dead ends: 57 [2018-09-28 10:28:15,806 INFO L226 Difference]: Without dead ends: 43 [2018-09-28 10:28:15,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-28 10:28:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-28 10:28:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-28 10:28:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-09-28 10:28:15,811 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-09-28 10:28:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:15,812 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-09-28 10:28:15,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:28:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-09-28 10:28:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-28 10:28:15,813 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:15,813 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:15,813 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:15,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-09-28 10:28:15,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:15,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:15,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:15,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:15,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:16,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:16,121 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 [2018-09-28 10:28:16,129 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:16,256 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-09-28 10:28:16,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:16,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:16,488 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:16,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-28 10:28:16,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:28:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:28:16,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:16,489 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-09-28 10:28:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:16,686 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-09-28 10:28:16,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-28 10:28:16,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-09-28 10:28:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:16,693 INFO L225 Difference]: With dead ends: 59 [2018-09-28 10:28:16,694 INFO L226 Difference]: Without dead ends: 45 [2018-09-28 10:28:16,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-28 10:28:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-28 10:28:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-28 10:28:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-09-28 10:28:16,702 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-09-28 10:28:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:16,703 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-09-28 10:28:16,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:28:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-09-28 10:28:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-28 10:28:16,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:16,704 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:16,704 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:16,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-09-28 10:28:16,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:16,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:16,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:16,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:16,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:17,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:17,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:17,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:17,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:17,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:17,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-28 10:28:17,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:28:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:28:17,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:17,891 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-09-28 10:28:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:18,039 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-09-28 10:28:18,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:28:18,039 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-09-28 10:28:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:18,041 INFO L225 Difference]: With dead ends: 61 [2018-09-28 10:28:18,041 INFO L226 Difference]: Without dead ends: 47 [2018-09-28 10:28:18,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-28 10:28:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-28 10:28:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-28 10:28:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-09-28 10:28:18,049 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-09-28 10:28:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:18,050 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-09-28 10:28:18,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:28:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-09-28 10:28:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-28 10:28:18,051 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:18,051 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:18,051 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:18,051 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-09-28 10:28:18,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:18,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:18,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:18,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:18,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:18,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:18,234 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 [2018-09-28 10:28:18,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:18,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:18,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:18,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:18,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:18,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-28 10:28:18,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-28 10:28:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-28 10:28:18,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:18,397 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-09-28 10:28:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:18,580 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-09-28 10:28:18,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:28:18,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-09-28 10:28:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:18,582 INFO L225 Difference]: With dead ends: 63 [2018-09-28 10:28:18,582 INFO L226 Difference]: Without dead ends: 49 [2018-09-28 10:28:18,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-28 10:28:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-28 10:28:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-28 10:28:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-09-28 10:28:18,589 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-09-28 10:28:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:18,589 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-09-28 10:28:18,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-28 10:28:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-09-28 10:28:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-28 10:28:18,590 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:18,590 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:18,591 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:18,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:18,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-09-28 10:28:18,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:18,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:18,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:18,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:18,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:18,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:18,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:18,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:18,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-09-28 10:28:18,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:18,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:19,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:19,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-28 10:28:19,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-28 10:28:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-28 10:28:19,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:19,237 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-09-28 10:28:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:19,423 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-09-28 10:28:19,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-28 10:28:19,423 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-09-28 10:28:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:19,424 INFO L225 Difference]: With dead ends: 65 [2018-09-28 10:28:19,424 INFO L226 Difference]: Without dead ends: 51 [2018-09-28 10:28:19,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-28 10:28:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-28 10:28:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-28 10:28:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-28 10:28:19,429 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-09-28 10:28:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:19,429 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-28 10:28:19,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-28 10:28:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-28 10:28:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-28 10:28:19,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:19,431 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:19,431 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:19,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-09-28 10:28:19,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:19,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:19,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:19,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:19,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:19,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:19,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:19,608 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:19,644 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:19,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:19,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:19,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:19,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-28 10:28:19,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:28:19,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:28:19,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:19,745 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-09-28 10:28:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:19,873 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-09-28 10:28:19,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-28 10:28:19,874 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-09-28 10:28:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:19,875 INFO L225 Difference]: With dead ends: 67 [2018-09-28 10:28:19,875 INFO L226 Difference]: Without dead ends: 53 [2018-09-28 10:28:19,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-28 10:28:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-28 10:28:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-28 10:28:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-09-28 10:28:19,881 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-09-28 10:28:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:19,881 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-09-28 10:28:19,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:28:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-09-28 10:28:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-28 10:28:19,882 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:19,882 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:19,883 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:19,883 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:19,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-09-28 10:28:19,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:19,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:19,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:19,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:19,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:20,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:20,106 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 [2018-09-28 10:28:20,113 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:20,152 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-28 10:28:20,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:20,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:20,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:20,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-28 10:28:20,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-28 10:28:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-28 10:28:20,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:20,336 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-09-28 10:28:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:20,530 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-09-28 10:28:20,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-28 10:28:20,531 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-09-28 10:28:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:20,531 INFO L225 Difference]: With dead ends: 69 [2018-09-28 10:28:20,532 INFO L226 Difference]: Without dead ends: 55 [2018-09-28 10:28:20,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-28 10:28:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-28 10:28:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-28 10:28:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-09-28 10:28:20,539 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-09-28 10:28:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:20,539 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-09-28 10:28:20,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-28 10:28:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-09-28 10:28:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-28 10:28:20,540 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:20,540 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:20,540 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:20,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:20,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-09-28 10:28:20,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:20,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:20,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:20,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:20,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:20,727 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:20,727 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 [2018-09-28 10:28:20,736 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:20,844 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-09-28 10:28:20,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:20,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:21,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:21,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-28 10:28:21,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-28 10:28:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-28 10:28:21,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:21,033 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-09-28 10:28:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:21,395 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-09-28 10:28:21,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-28 10:28:21,397 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-09-28 10:28:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:21,398 INFO L225 Difference]: With dead ends: 71 [2018-09-28 10:28:21,398 INFO L226 Difference]: Without dead ends: 57 [2018-09-28 10:28:21,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-28 10:28:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-28 10:28:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-28 10:28:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-09-28 10:28:21,403 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-09-28 10:28:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:21,403 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-09-28 10:28:21,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-28 10:28:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-09-28 10:28:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-28 10:28:21,404 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:21,404 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:21,404 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:21,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:21,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-09-28 10:28:21,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:21,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:21,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:21,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:21,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:21,902 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:21,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:21,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:21,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:22,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:22,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-28 10:28:22,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-28 10:28:22,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-28 10:28:22,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:22,237 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-09-28 10:28:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:22,447 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-09-28 10:28:22,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-28 10:28:22,448 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-09-28 10:28:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:22,448 INFO L225 Difference]: With dead ends: 73 [2018-09-28 10:28:22,448 INFO L226 Difference]: Without dead ends: 59 [2018-09-28 10:28:22,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-28 10:28:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-28 10:28:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-28 10:28:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-09-28 10:28:22,453 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-09-28 10:28:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:22,453 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-09-28 10:28:22,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-28 10:28:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-09-28 10:28:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-28 10:28:22,454 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:22,454 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:22,455 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:22,455 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-09-28 10:28:22,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:22,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:22,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:22,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:22,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:22,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:22,716 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 [2018-09-28 10:28:22,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:22,764 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:22,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:22,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:22,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:22,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-28 10:28:22,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-28 10:28:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-28 10:28:22,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:22,898 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-09-28 10:28:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:23,021 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-09-28 10:28:23,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:28:23,021 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-09-28 10:28:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:23,022 INFO L225 Difference]: With dead ends: 75 [2018-09-28 10:28:23,022 INFO L226 Difference]: Without dead ends: 61 [2018-09-28 10:28:23,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-28 10:28:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-28 10:28:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-28 10:28:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-09-28 10:28:23,026 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-09-28 10:28:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:23,026 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-09-28 10:28:23,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-28 10:28:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-09-28 10:28:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-28 10:28:23,027 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:23,027 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:23,027 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:23,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:23,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-09-28 10:28:23,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:23,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:23,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:23,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:23,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:23,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:23,566 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 [2018-09-28 10:28:23,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:23,626 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-09-28 10:28:23,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:23,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:23,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:23,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-28 10:28:23,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-28 10:28:23,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-28 10:28:23,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:23,767 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-09-28 10:28:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:23,879 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-09-28 10:28:23,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-28 10:28:23,880 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-09-28 10:28:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:23,880 INFO L225 Difference]: With dead ends: 77 [2018-09-28 10:28:23,880 INFO L226 Difference]: Without dead ends: 63 [2018-09-28 10:28:23,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-28 10:28:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-28 10:28:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-28 10:28:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-09-28 10:28:23,884 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-09-28 10:28:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:23,884 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-09-28 10:28:23,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-28 10:28:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-09-28 10:28:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-28 10:28:23,885 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:23,885 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:23,885 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:23,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-09-28 10:28:23,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:23,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:23,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:23,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:23,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:24,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:24,052 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 [2018-09-28 10:28:24,065 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:24,107 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:24,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:24,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:24,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:24,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-28 10:28:24,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-28 10:28:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-28 10:28:24,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:24,240 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-09-28 10:28:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:24,568 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-09-28 10:28:24,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-28 10:28:24,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-09-28 10:28:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:24,569 INFO L225 Difference]: With dead ends: 79 [2018-09-28 10:28:24,569 INFO L226 Difference]: Without dead ends: 65 [2018-09-28 10:28:24,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-28 10:28:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-28 10:28:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-28 10:28:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-09-28 10:28:24,573 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-09-28 10:28:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:24,573 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-09-28 10:28:24,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-28 10:28:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-09-28 10:28:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-28 10:28:24,574 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:24,574 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:24,574 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:24,574 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:24,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-09-28 10:28:24,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:24,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:24,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:24,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:24,873 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 [2018-09-28 10:28:24,885 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:24,943 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-28 10:28:24,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:24,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:25,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:25,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-28 10:28:25,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-28 10:28:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-28 10:28:25,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:25,070 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-09-28 10:28:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:25,447 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-09-28 10:28:25,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:28:25,447 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-09-28 10:28:25,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:25,448 INFO L225 Difference]: With dead ends: 81 [2018-09-28 10:28:25,448 INFO L226 Difference]: Without dead ends: 67 [2018-09-28 10:28:25,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-28 10:28:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-28 10:28:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-28 10:28:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-09-28 10:28:25,453 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-09-28 10:28:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:25,453 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-09-28 10:28:25,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-28 10:28:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-09-28 10:28:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-28 10:28:25,454 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:25,454 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:25,454 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:25,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-09-28 10:28:25,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:25,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:25,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:25,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:25,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:25,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:25,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:25,683 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:25,740 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-09-28 10:28:25,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:25,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:25,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:25,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-28 10:28:25,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-28 10:28:25,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-28 10:28:25,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:25,866 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-09-28 10:28:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:26,439 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-09-28 10:28:26,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-28 10:28:26,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-09-28 10:28:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:26,441 INFO L225 Difference]: With dead ends: 83 [2018-09-28 10:28:26,441 INFO L226 Difference]: Without dead ends: 69 [2018-09-28 10:28:26,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-28 10:28:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-28 10:28:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-28 10:28:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-09-28 10:28:26,446 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-09-28 10:28:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:26,446 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-09-28 10:28:26,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-28 10:28:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-09-28 10:28:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-28 10:28:26,447 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:26,447 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:26,448 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:26,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-09-28 10:28:26,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:26,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:26,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:26,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:26,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:26,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:26,657 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 [2018-09-28 10:28:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:26,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:26,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:26,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-28 10:28:26,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-28 10:28:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-28 10:28:26,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:26,857 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-09-28 10:28:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:27,072 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-09-28 10:28:27,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:28:27,072 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-09-28 10:28:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:27,073 INFO L225 Difference]: With dead ends: 85 [2018-09-28 10:28:27,073 INFO L226 Difference]: Without dead ends: 71 [2018-09-28 10:28:27,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-28 10:28:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-28 10:28:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-28 10:28:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-09-28 10:28:27,077 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-09-28 10:28:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:27,078 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-09-28 10:28:27,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-28 10:28:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-09-28 10:28:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-28 10:28:27,078 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:27,078 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:27,078 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:27,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-09-28 10:28:27,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:27,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:27,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:27,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:27,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:27,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:27,292 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:27,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:27,346 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:27,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:27,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:27,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:27,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-28 10:28:27,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-28 10:28:27,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-28 10:28:27,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:27,523 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-09-28 10:28:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:27,673 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-09-28 10:28:27,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-28 10:28:27,674 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-09-28 10:28:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:27,674 INFO L225 Difference]: With dead ends: 87 [2018-09-28 10:28:27,674 INFO L226 Difference]: Without dead ends: 73 [2018-09-28 10:28:27,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-28 10:28:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-28 10:28:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-28 10:28:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-28 10:28:27,679 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-09-28 10:28:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:27,679 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-28 10:28:27,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-28 10:28:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-28 10:28:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-28 10:28:27,680 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:27,680 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:27,680 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:27,680 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-09-28 10:28:27,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:27,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:27,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:27,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:27,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:28,482 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:28,482 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 [2018-09-28 10:28:28,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:28,552 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-09-28 10:28:28,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:28,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:28,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:28,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-28 10:28:28,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-28 10:28:28,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-28 10:28:28,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:28,688 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-09-28 10:28:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:28,894 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-09-28 10:28:28,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-28 10:28:28,894 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-09-28 10:28:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:28,895 INFO L225 Difference]: With dead ends: 89 [2018-09-28 10:28:28,895 INFO L226 Difference]: Without dead ends: 75 [2018-09-28 10:28:28,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-28 10:28:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-28 10:28:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-28 10:28:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-09-28 10:28:28,900 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-09-28 10:28:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:28,901 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-09-28 10:28:28,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-28 10:28:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-09-28 10:28:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-28 10:28:28,901 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:28,901 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:28,902 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:28,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-09-28 10:28:28,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:28,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:28,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:28,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:28,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:29,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:29,167 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 [2018-09-28 10:28:29,176 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:29,222 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:29,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:29,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:29,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:29,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-28 10:28:29,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-28 10:28:29,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-28 10:28:29,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:29,393 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-09-28 10:28:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:29,676 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-09-28 10:28:29,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-28 10:28:29,677 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-09-28 10:28:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:29,677 INFO L225 Difference]: With dead ends: 91 [2018-09-28 10:28:29,677 INFO L226 Difference]: Without dead ends: 77 [2018-09-28 10:28:29,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-28 10:28:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-28 10:28:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-28 10:28:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-09-28 10:28:29,682 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-09-28 10:28:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:29,682 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-09-28 10:28:29,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-28 10:28:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-09-28 10:28:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-28 10:28:29,683 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:29,683 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:29,683 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:29,683 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-09-28 10:28:29,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:29,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:29,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:29,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:29,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:30,363 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:30,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:30,370 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:30,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-28 10:28:30,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:30,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:30,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:30,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-28 10:28:30,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-28 10:28:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-28 10:28:30,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:30,592 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-09-28 10:28:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:30,892 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-09-28 10:28:30,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-28 10:28:30,893 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-09-28 10:28:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:30,893 INFO L225 Difference]: With dead ends: 93 [2018-09-28 10:28:30,893 INFO L226 Difference]: Without dead ends: 79 [2018-09-28 10:28:30,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-28 10:28:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-28 10:28:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-28 10:28:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-09-28 10:28:30,898 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-09-28 10:28:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:30,898 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-09-28 10:28:30,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-28 10:28:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-09-28 10:28:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-28 10:28:30,899 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:30,899 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:30,899 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:30,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-09-28 10:28:30,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:30,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:30,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:30,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:30,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:31,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:31,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:31,398 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:31,469 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-28 10:28:31,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:31,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:31,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:31,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-28 10:28:31,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-28 10:28:31,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-28 10:28:31,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:31,712 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-09-28 10:28:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:32,051 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-09-28 10:28:32,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-28 10:28:32,052 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-28 10:28:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:32,053 INFO L225 Difference]: With dead ends: 95 [2018-09-28 10:28:32,053 INFO L226 Difference]: Without dead ends: 81 [2018-09-28 10:28:32,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-28 10:28:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-28 10:28:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-28 10:28:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-09-28 10:28:32,057 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-09-28 10:28:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:32,058 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-09-28 10:28:32,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-28 10:28:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-09-28 10:28:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-28 10:28:32,058 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:32,058 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:32,059 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:32,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-09-28 10:28:32,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:32,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:32,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:32,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:32,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:32,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:32,284 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 [2018-09-28 10:28:32,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:32,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:32,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:32,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-28 10:28:32,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-28 10:28:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-28 10:28:32,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:32,516 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-09-28 10:28:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:32,826 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-09-28 10:28:32,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-28 10:28:32,827 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-09-28 10:28:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:32,827 INFO L225 Difference]: With dead ends: 97 [2018-09-28 10:28:32,827 INFO L226 Difference]: Without dead ends: 83 [2018-09-28 10:28:32,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-28 10:28:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-28 10:28:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-28 10:28:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-09-28 10:28:32,832 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-09-28 10:28:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:32,833 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-09-28 10:28:32,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-28 10:28:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-09-28 10:28:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-28 10:28:32,833 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:32,834 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:32,834 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:32,834 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-09-28 10:28:32,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:32,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:32,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:32,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:32,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:33,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:33,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:33,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:33,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:33,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:33,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:33,331 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:33,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-28 10:28:33,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-28 10:28:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-28 10:28:33,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:33,332 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-09-28 10:28:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:33,652 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-09-28 10:28:33,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-28 10:28:33,652 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-09-28 10:28:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:33,653 INFO L225 Difference]: With dead ends: 99 [2018-09-28 10:28:33,653 INFO L226 Difference]: Without dead ends: 85 [2018-09-28 10:28:33,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-28 10:28:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-28 10:28:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-28 10:28:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-09-28 10:28:33,658 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-09-28 10:28:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:33,658 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-09-28 10:28:33,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-28 10:28:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-09-28 10:28:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-28 10:28:33,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:33,659 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:33,660 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:33,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-09-28 10:28:33,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:33,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:33,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:33,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:33,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:33,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:33,909 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 [2018-09-28 10:28:33,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:33,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-28 10:28:33,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:34,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:34,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:34,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-28 10:28:34,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-28 10:28:34,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-28 10:28:34,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:34,159 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-09-28 10:28:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:34,334 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-09-28 10:28:34,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-28 10:28:34,334 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-09-28 10:28:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:34,335 INFO L225 Difference]: With dead ends: 101 [2018-09-28 10:28:34,335 INFO L226 Difference]: Without dead ends: 87 [2018-09-28 10:28:34,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-28 10:28:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-28 10:28:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-28 10:28:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-09-28 10:28:34,340 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-09-28 10:28:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:34,340 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-09-28 10:28:34,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-28 10:28:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-09-28 10:28:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-28 10:28:34,341 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:34,341 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:34,341 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:34,341 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-09-28 10:28:34,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:34,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:34,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:34,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:34,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:34,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:34,581 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 [2018-09-28 10:28:34,588 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:34,638 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:34,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:34,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:34,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:34,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-28 10:28:34,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-28 10:28:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-28 10:28:34,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:34,831 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-09-28 10:28:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:35,051 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-09-28 10:28:35,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-28 10:28:35,052 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-09-28 10:28:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:35,053 INFO L225 Difference]: With dead ends: 103 [2018-09-28 10:28:35,053 INFO L226 Difference]: Without dead ends: 89 [2018-09-28 10:28:35,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-28 10:28:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-28 10:28:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-28 10:28:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-09-28 10:28:35,057 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-09-28 10:28:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:35,058 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-09-28 10:28:35,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-28 10:28:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-09-28 10:28:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-28 10:28:35,058 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:35,058 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:35,059 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:35,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-09-28 10:28:35,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:35,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:35,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:35,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:35,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:35,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:35,443 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 [2018-09-28 10:28:35,450 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:35,541 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-28 10:28:35,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:35,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:37,016 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:37,016 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-28 10:28:37,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-28 10:28:37,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-28 10:28:37,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:37,017 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-09-28 10:28:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:37,362 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-09-28 10:28:37,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:28:37,362 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-09-28 10:28:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:37,363 INFO L225 Difference]: With dead ends: 105 [2018-09-28 10:28:37,363 INFO L226 Difference]: Without dead ends: 91 [2018-09-28 10:28:37,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-28 10:28:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-28 10:28:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-28 10:28:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-09-28 10:28:37,367 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-09-28 10:28:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:37,367 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-09-28 10:28:37,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-28 10:28:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-09-28 10:28:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-28 10:28:37,367 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:37,368 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:37,368 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:37,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:37,368 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-09-28 10:28:37,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:37,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:37,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:37,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:37,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:37,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:37,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:37,947 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:38,038 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-09-28 10:28:38,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:38,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:38,310 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:38,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-28 10:28:38,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-28 10:28:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-28 10:28:38,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:38,311 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-09-28 10:28:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:38,621 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-09-28 10:28:38,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-28 10:28:38,622 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-09-28 10:28:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:38,623 INFO L225 Difference]: With dead ends: 107 [2018-09-28 10:28:38,623 INFO L226 Difference]: Without dead ends: 93 [2018-09-28 10:28:38,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-28 10:28:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-28 10:28:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-28 10:28:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-09-28 10:28:38,626 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-09-28 10:28:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:38,627 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-09-28 10:28:38,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-28 10:28:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-09-28 10:28:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-28 10:28:38,627 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:38,627 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:38,628 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:38,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-09-28 10:28:38,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:38,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:38,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:38,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:38,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:39,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:39,242 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 [2018-09-28 10:28:39,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:39,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:39,467 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:39,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-28 10:28:39,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-28 10:28:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-28 10:28:39,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:39,468 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-09-28 10:28:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:39,744 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-09-28 10:28:39,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-28 10:28:39,744 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-09-28 10:28:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:39,745 INFO L225 Difference]: With dead ends: 109 [2018-09-28 10:28:39,745 INFO L226 Difference]: Without dead ends: 95 [2018-09-28 10:28:39,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-28 10:28:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-28 10:28:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-28 10:28:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-09-28 10:28:39,750 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-09-28 10:28:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:39,751 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-09-28 10:28:39,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-28 10:28:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-09-28 10:28:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-28 10:28:39,751 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:39,752 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:39,752 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:39,752 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-09-28 10:28:39,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:39,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:39,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:40,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:40,506 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 [2018-09-28 10:28:40,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:40,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:40,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:40,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:40,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:40,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-28 10:28:40,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-28 10:28:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-28 10:28:40,849 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:40,849 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-09-28 10:28:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:41,306 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-09-28 10:28:41,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-28 10:28:41,306 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-09-28 10:28:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:41,307 INFO L225 Difference]: With dead ends: 111 [2018-09-28 10:28:41,307 INFO L226 Difference]: Without dead ends: 97 [2018-09-28 10:28:41,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-28 10:28:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-28 10:28:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-28 10:28:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-09-28 10:28:41,313 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-09-28 10:28:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:41,313 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-09-28 10:28:41,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-28 10:28:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-09-28 10:28:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-28 10:28:41,314 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:41,314 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:41,314 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:41,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-09-28 10:28:41,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:41,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:41,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:41,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:41,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:41,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:41,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:41,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:41,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-09-28 10:28:41,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:41,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:42,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:42,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-28 10:28:42,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-28 10:28:42,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-28 10:28:42,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:42,101 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-09-28 10:28:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:42,462 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-09-28 10:28:42,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-28 10:28:42,463 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-09-28 10:28:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:42,464 INFO L225 Difference]: With dead ends: 113 [2018-09-28 10:28:42,464 INFO L226 Difference]: Without dead ends: 99 [2018-09-28 10:28:42,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-28 10:28:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-28 10:28:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-28 10:28:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-09-28 10:28:42,468 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-09-28 10:28:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:42,469 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-09-28 10:28:42,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-28 10:28:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-09-28 10:28:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-28 10:28:42,469 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:42,470 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:42,470 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:42,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:42,470 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-09-28 10:28:42,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:42,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:42,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:42,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:42,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:43,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:43,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:43,366 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:43,427 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:43,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:43,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:44,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:44,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-28 10:28:44,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-28 10:28:44,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-28 10:28:44,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:44,998 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-09-28 10:28:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:46,364 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-09-28 10:28:46,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-28 10:28:46,365 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-09-28 10:28:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:46,366 INFO L225 Difference]: With dead ends: 115 [2018-09-28 10:28:46,366 INFO L226 Difference]: Without dead ends: 101 [2018-09-28 10:28:46,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-28 10:28:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-28 10:28:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-28 10:28:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-09-28 10:28:46,372 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-09-28 10:28:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:46,372 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-09-28 10:28:46,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-28 10:28:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-09-28 10:28:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-28 10:28:46,373 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:46,373 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:46,373 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:46,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-09-28 10:28:46,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:46,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:46,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:46,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:46,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:46,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:46,901 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 [2018-09-28 10:28:46,908 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:47,006 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-28 10:28:47,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:47,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:47,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:47,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-28 10:28:47,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-28 10:28:47,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-28 10:28:47,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:47,215 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-09-28 10:28:47,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:47,656 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-09-28 10:28:47,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-28 10:28:47,657 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-09-28 10:28:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:47,657 INFO L225 Difference]: With dead ends: 117 [2018-09-28 10:28:47,657 INFO L226 Difference]: Without dead ends: 103 [2018-09-28 10:28:47,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-28 10:28:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-28 10:28:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-28 10:28:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-09-28 10:28:47,663 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-09-28 10:28:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:47,664 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-09-28 10:28:47,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-28 10:28:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-09-28 10:28:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-28 10:28:47,664 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:47,665 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:47,665 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:47,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-09-28 10:28:47,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:47,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:47,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:47,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:47,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:48,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:48,826 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 [2018-09-28 10:28:48,834 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:48,937 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-09-28 10:28:48,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:48,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:49,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:49,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-28 10:28:49,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-28 10:28:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-28 10:28:49,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:49,129 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-09-28 10:28:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:49,472 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-09-28 10:28:49,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-28 10:28:49,472 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-09-28 10:28:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:49,473 INFO L225 Difference]: With dead ends: 119 [2018-09-28 10:28:49,473 INFO L226 Difference]: Without dead ends: 105 [2018-09-28 10:28:49,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-28 10:28:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-28 10:28:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-28 10:28:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-09-28 10:28:49,479 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-09-28 10:28:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:49,480 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-09-28 10:28:49,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-28 10:28:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-09-28 10:28:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-28 10:28:49,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:49,480 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:49,481 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:49,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-09-28 10:28:49,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:49,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:49,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:50,206 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:50,206 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 [2018-09-28 10:28:50,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:50,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:50,483 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:50,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-28 10:28:50,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-28 10:28:50,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-28 10:28:50,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:50,484 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-09-28 10:28:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:50,700 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-09-28 10:28:50,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-28 10:28:50,700 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-09-28 10:28:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:50,701 INFO L225 Difference]: With dead ends: 121 [2018-09-28 10:28:50,701 INFO L226 Difference]: Without dead ends: 107 [2018-09-28 10:28:50,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-28 10:28:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-28 10:28:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-28 10:28:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-09-28 10:28:50,707 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-09-28 10:28:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:50,707 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-09-28 10:28:50,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-28 10:28:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-09-28 10:28:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-28 10:28:50,708 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:50,708 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:50,708 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:50,708 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:50,709 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-09-28 10:28:50,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:50,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:50,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:50,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:50,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:51,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:51,360 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 [2018-09-28 10:28:51,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:51,447 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:51,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:51,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:51,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:51,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-28 10:28:51,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-28 10:28:51,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-28 10:28:51,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:51,744 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-09-28 10:28:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:52,338 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-09-28 10:28:52,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-28 10:28:52,339 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-09-28 10:28:52,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:52,339 INFO L225 Difference]: With dead ends: 123 [2018-09-28 10:28:52,339 INFO L226 Difference]: Without dead ends: 109 [2018-09-28 10:28:52,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-28 10:28:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-28 10:28:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-28 10:28:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-09-28 10:28:52,345 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-09-28 10:28:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:52,345 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-09-28 10:28:52,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-28 10:28:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-09-28 10:28:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-28 10:28:52,346 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:52,346 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:52,346 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:52,346 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:52,346 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-09-28 10:28:52,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:52,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:52,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:52,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:52,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:52,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:52,958 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:52,967 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:28:53,088 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-09-28 10:28:53,089 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:53,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:53,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:53,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-28 10:28:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-28 10:28:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-28 10:28:53,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:53,316 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-09-28 10:28:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:53,585 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-09-28 10:28:53,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-28 10:28:53,586 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-09-28 10:28:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:53,587 INFO L225 Difference]: With dead ends: 125 [2018-09-28 10:28:53,587 INFO L226 Difference]: Without dead ends: 111 [2018-09-28 10:28:53,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-28 10:28:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-28 10:28:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-28 10:28:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-09-28 10:28:53,592 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-09-28 10:28:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:53,593 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-09-28 10:28:53,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-28 10:28:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-09-28 10:28:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-28 10:28:53,594 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:53,594 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:53,594 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:53,594 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-09-28 10:28:53,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:53,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:53,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:53,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:53,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:53,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:53,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:53,938 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:28:54,021 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:28:54,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:54,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:54,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:54,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-28 10:28:54,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-28 10:28:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-28 10:28:54,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:54,224 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-09-28 10:28:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:54,696 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-09-28 10:28:54,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-28 10:28:54,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-09-28 10:28:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:54,697 INFO L225 Difference]: With dead ends: 127 [2018-09-28 10:28:54,697 INFO L226 Difference]: Without dead ends: 113 [2018-09-28 10:28:54,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-28 10:28:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-28 10:28:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-28 10:28:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-09-28 10:28:54,704 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-09-28 10:28:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:54,704 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-09-28 10:28:54,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-28 10:28:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-09-28 10:28:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-28 10:28:54,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:54,705 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:54,705 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:54,706 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:54,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-09-28 10:28:54,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:54,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:54,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:54,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:54,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:55,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:55,060 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 [2018-09-28 10:28:55,068 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:28:55,192 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-28 10:28:55,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:55,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:55,539 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:55,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-28 10:28:55,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-28 10:28:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-28 10:28:55,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:55,540 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-09-28 10:28:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:55,918 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-09-28 10:28:55,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-28 10:28:55,918 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-09-28 10:28:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:55,919 INFO L225 Difference]: With dead ends: 129 [2018-09-28 10:28:55,919 INFO L226 Difference]: Without dead ends: 115 [2018-09-28 10:28:55,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-28 10:28:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-28 10:28:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-28 10:28:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-09-28 10:28:55,925 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-09-28 10:28:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:55,925 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-09-28 10:28:55,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-28 10:28:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-09-28 10:28:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-28 10:28:55,926 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:55,926 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:55,926 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:55,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:55,927 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-09-28 10:28:55,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:55,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:55,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:55,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:55,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:56,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:56,220 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 [2018-09-28 10:28:56,227 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:28:56,352 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-28 10:28:56,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:56,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:56,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:56,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-28 10:28:56,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-28 10:28:56,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-28 10:28:56,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:56,591 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-09-28 10:28:57,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:57,262 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-09-28 10:28:57,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-28 10:28:57,262 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-09-28 10:28:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:57,263 INFO L225 Difference]: With dead ends: 131 [2018-09-28 10:28:57,263 INFO L226 Difference]: Without dead ends: 117 [2018-09-28 10:28:57,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-28 10:28:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-28 10:28:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-28 10:28:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-09-28 10:28:57,268 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-09-28 10:28:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:57,268 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-09-28 10:28:57,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-28 10:28:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-09-28 10:28:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-28 10:28:57,269 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:57,269 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:57,269 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:57,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-09-28 10:28:57,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:57,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:57,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:57,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:28:57,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:57,757 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:57,757 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 [2018-09-28 10:28:57,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:57,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:58,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:58,208 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-28 10:28:58,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-28 10:28:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-28 10:28:58,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:58,210 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-09-28 10:28:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:58,747 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-09-28 10:28:58,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-28 10:28:58,747 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-09-28 10:28:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:58,748 INFO L225 Difference]: With dead ends: 133 [2018-09-28 10:28:58,748 INFO L226 Difference]: Without dead ends: 119 [2018-09-28 10:28:58,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:58,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-28 10:28:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-28 10:28:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-28 10:28:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-09-28 10:28:58,753 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-09-28 10:28:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:58,754 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-09-28 10:28:58,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-28 10:28:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-09-28 10:28:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-28 10:28:58,754 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:58,754 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:28:58,755 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:58,755 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-09-28 10:28:58,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:58,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:58,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:58,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:58,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:28:59,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:59,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:28:59,064 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:59,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:59,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:59,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:00,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:00,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-28 10:29:00,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-28 10:29:00,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-28 10:29:00,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:00,414 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-09-28 10:29:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:01,173 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-09-28 10:29:01,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-28 10:29:01,174 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-09-28 10:29:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:01,175 INFO L225 Difference]: With dead ends: 135 [2018-09-28 10:29:01,175 INFO L226 Difference]: Without dead ends: 121 [2018-09-28 10:29:01,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-28 10:29:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-28 10:29:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-28 10:29:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-09-28 10:29:01,180 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-09-28 10:29:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:01,181 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-09-28 10:29:01,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-28 10:29:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-09-28 10:29:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-28 10:29:01,182 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:01,182 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:01,182 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:01,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-09-28 10:29:01,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:01,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:01,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:01,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:01,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:01,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:01,461 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 [2018-09-28 10:29:01,469 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:01,607 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-09-28 10:29:01,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:01,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:01,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:01,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-28 10:29:01,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-28 10:29:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-28 10:29:01,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:01,870 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-09-28 10:29:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:02,456 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-09-28 10:29:02,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-28 10:29:02,457 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-09-28 10:29:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:02,457 INFO L225 Difference]: With dead ends: 137 [2018-09-28 10:29:02,457 INFO L226 Difference]: Without dead ends: 123 [2018-09-28 10:29:02,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-28 10:29:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-28 10:29:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-28 10:29:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-09-28 10:29:02,466 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-09-28 10:29:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:02,466 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-09-28 10:29:02,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-28 10:29:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-09-28 10:29:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-28 10:29:02,467 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:02,467 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:02,467 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:02,467 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-09-28 10:29:02,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:02,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:02,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:02,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:02,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:02,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:02,789 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 [2018-09-28 10:29:02,797 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:02,876 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:02,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:02,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:03,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:03,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-28 10:29:03,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-28 10:29:03,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-28 10:29:03,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:03,160 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-09-28 10:29:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:03,739 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-09-28 10:29:03,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-28 10:29:03,739 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-09-28 10:29:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:03,740 INFO L225 Difference]: With dead ends: 139 [2018-09-28 10:29:03,740 INFO L226 Difference]: Without dead ends: 125 [2018-09-28 10:29:03,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-28 10:29:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-28 10:29:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-28 10:29:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-09-28 10:29:03,745 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-09-28 10:29:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:03,745 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-09-28 10:29:03,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-28 10:29:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-09-28 10:29:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-28 10:29:03,746 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:03,746 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:03,746 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:03,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-09-28 10:29:03,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:03,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:03,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:03,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:03,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:04,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:04,047 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 [2018-09-28 10:29:04,062 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:04,232 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-28 10:29:04,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:04,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:04,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:04,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-28 10:29:04,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-28 10:29:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-28 10:29:04,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:04,564 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-09-28 10:29:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:05,155 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-09-28 10:29:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-28 10:29:05,155 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-09-28 10:29:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:05,156 INFO L225 Difference]: With dead ends: 141 [2018-09-28 10:29:05,156 INFO L226 Difference]: Without dead ends: 127 [2018-09-28 10:29:05,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-28 10:29:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-28 10:29:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-28 10:29:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-09-28 10:29:05,160 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-09-28 10:29:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:05,160 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-09-28 10:29:05,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-28 10:29:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-09-28 10:29:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-28 10:29:05,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:05,161 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:05,161 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:05,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-09-28 10:29:05,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:05,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:05,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:05,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:05,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:05,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:05,547 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 [2018-09-28 10:29:05,556 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:05,700 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-09-28 10:29:05,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:05,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:05,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:05,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-28 10:29:05,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-28 10:29:05,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-28 10:29:05,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:05,930 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-09-28 10:29:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:06,524 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-09-28 10:29:06,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-28 10:29:06,525 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-09-28 10:29:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:06,525 INFO L225 Difference]: With dead ends: 143 [2018-09-28 10:29:06,525 INFO L226 Difference]: Without dead ends: 129 [2018-09-28 10:29:06,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-28 10:29:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-28 10:29:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-28 10:29:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-09-28 10:29:06,530 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-09-28 10:29:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:06,530 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-09-28 10:29:06,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-28 10:29:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-09-28 10:29:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-28 10:29:06,531 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:06,531 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:06,531 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:06,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:06,531 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-09-28 10:29:06,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:06,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:06,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:06,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:06,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:06,852 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:06,852 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 [2018-09-28 10:29:06,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:06,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:07,387 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:07,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-28 10:29:07,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-28 10:29:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-28 10:29:07,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:07,388 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-09-28 10:29:08,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:08,060 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-09-28 10:29:08,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-28 10:29:08,060 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-09-28 10:29:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:08,061 INFO L225 Difference]: With dead ends: 145 [2018-09-28 10:29:08,061 INFO L226 Difference]: Without dead ends: 131 [2018-09-28 10:29:08,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-28 10:29:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-28 10:29:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-28 10:29:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-09-28 10:29:08,067 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-09-28 10:29:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:08,067 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-09-28 10:29:08,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-28 10:29:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-09-28 10:29:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-28 10:29:08,068 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:08,068 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:08,069 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:08,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-09-28 10:29:08,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:08,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:08,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:08,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:08,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:08,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:08,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:08,507 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:29:08,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:29:08,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:08,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:08,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:08,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-28 10:29:08,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-28 10:29:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-28 10:29:08,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:08,828 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-09-28 10:29:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:09,486 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-09-28 10:29:09,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-28 10:29:09,486 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-09-28 10:29:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:09,487 INFO L225 Difference]: With dead ends: 147 [2018-09-28 10:29:09,487 INFO L226 Difference]: Without dead ends: 133 [2018-09-28 10:29:09,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-28 10:29:09,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-28 10:29:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-28 10:29:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-09-28 10:29:09,492 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-09-28 10:29:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:09,492 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-09-28 10:29:09,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-28 10:29:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-09-28 10:29:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-28 10:29:09,493 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:09,493 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:09,493 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:09,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:09,493 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-09-28 10:29:09,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:09,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:09,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:09,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:09,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:09,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:09,820 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 [2018-09-28 10:29:09,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:09,980 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-28 10:29:09,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:09,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:10,215 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:10,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-28 10:29:10,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-28 10:29:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-28 10:29:10,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:10,216 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-09-28 10:29:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:10,891 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-09-28 10:29:10,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-28 10:29:10,891 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-09-28 10:29:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:10,892 INFO L225 Difference]: With dead ends: 149 [2018-09-28 10:29:10,892 INFO L226 Difference]: Without dead ends: 135 [2018-09-28 10:29:10,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-28 10:29:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-28 10:29:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-28 10:29:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-09-28 10:29:10,896 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-09-28 10:29:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:10,896 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-09-28 10:29:10,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-28 10:29:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-09-28 10:29:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-28 10:29:10,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:10,897 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:10,897 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:10,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:10,898 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-09-28 10:29:10,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:10,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:10,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:10,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:10,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:11,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:11,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:11,229 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:11,315 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:11,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:11,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:11,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:11,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-28 10:29:11,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-28 10:29:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-28 10:29:11,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:11,618 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-09-28 10:29:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:12,304 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-09-28 10:29:12,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-28 10:29:12,304 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-09-28 10:29:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:12,305 INFO L225 Difference]: With dead ends: 151 [2018-09-28 10:29:12,305 INFO L226 Difference]: Without dead ends: 137 [2018-09-28 10:29:12,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-28 10:29:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-28 10:29:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-28 10:29:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-09-28 10:29:12,309 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-09-28 10:29:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:12,309 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-09-28 10:29:12,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-28 10:29:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-09-28 10:29:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-28 10:29:12,310 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:12,310 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:12,310 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:12,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:12,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-09-28 10:29:12,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:12,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:12,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:12,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:12,740 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 [2018-09-28 10:29:12,748 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:12,901 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-28 10:29:12,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:12,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:13,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:13,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-28 10:29:13,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-28 10:29:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-28 10:29:13,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:13,322 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-09-28 10:29:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:14,005 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-09-28 10:29:14,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-28 10:29:14,005 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-09-28 10:29:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:14,006 INFO L225 Difference]: With dead ends: 153 [2018-09-28 10:29:14,006 INFO L226 Difference]: Without dead ends: 139 [2018-09-28 10:29:14,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-28 10:29:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-28 10:29:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-28 10:29:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-09-28 10:29:14,010 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-09-28 10:29:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:14,010 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-09-28 10:29:14,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-28 10:29:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-09-28 10:29:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-28 10:29:14,011 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:14,011 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:14,011 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:14,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-09-28 10:29:14,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:14,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:14,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:14,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:14,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:14,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:14,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:14,361 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:14,521 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-09-28 10:29:14,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:14,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:14,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:14,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-28 10:29:14,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-28 10:29:14,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-28 10:29:14,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:14,764 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-09-28 10:29:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:15,528 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-09-28 10:29:15,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-28 10:29:15,528 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-09-28 10:29:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:15,529 INFO L225 Difference]: With dead ends: 155 [2018-09-28 10:29:15,529 INFO L226 Difference]: Without dead ends: 141 [2018-09-28 10:29:15,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-28 10:29:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-28 10:29:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-28 10:29:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-09-28 10:29:15,534 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-09-28 10:29:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:15,535 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-09-28 10:29:15,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-28 10:29:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-09-28 10:29:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-28 10:29:15,535 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:15,536 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:15,536 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:15,536 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-09-28 10:29:15,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:15,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:15,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:15,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:15,890 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 [2018-09-28 10:29:15,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:16,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:16,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:16,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-28 10:29:16,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-28 10:29:16,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-28 10:29:16,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:16,292 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-09-28 10:29:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:17,021 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-09-28 10:29:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:29:17,021 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-09-28 10:29:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:17,022 INFO L225 Difference]: With dead ends: 157 [2018-09-28 10:29:17,022 INFO L226 Difference]: Without dead ends: 143 [2018-09-28 10:29:17,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-28 10:29:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-28 10:29:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-28 10:29:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-09-28 10:29:17,027 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-09-28 10:29:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:17,027 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-09-28 10:29:17,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-28 10:29:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-09-28 10:29:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-28 10:29:17,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:17,028 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:17,028 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:17,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:17,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-09-28 10:29:17,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:17,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:17,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:17,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:17,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:17,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:17,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:17,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:29:17,733 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:29:17,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:17,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:17,996 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:17,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-28 10:29:17,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-28 10:29:17,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-28 10:29:17,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:17,997 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-09-28 10:29:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:18,820 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-09-28 10:29:18,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-28 10:29:18,820 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-09-28 10:29:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:18,821 INFO L225 Difference]: With dead ends: 159 [2018-09-28 10:29:18,821 INFO L226 Difference]: Without dead ends: 145 [2018-09-28 10:29:18,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-28 10:29:18,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-28 10:29:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-28 10:29:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-09-28 10:29:18,826 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-09-28 10:29:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:18,827 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-09-28 10:29:18,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-28 10:29:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-09-28 10:29:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-28 10:29:18,827 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:18,828 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:18,828 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:18,828 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:18,828 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-09-28 10:29:18,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:18,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:18,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:18,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:18,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:19,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:19,437 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 [2018-09-28 10:29:19,447 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:19,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-09-28 10:29:19,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:19,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:19,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:19,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-28 10:29:19,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-28 10:29:19,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-28 10:29:19,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:19,898 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-09-28 10:29:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:20,785 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-09-28 10:29:20,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-28 10:29:20,786 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-09-28 10:29:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:20,787 INFO L225 Difference]: With dead ends: 161 [2018-09-28 10:29:20,787 INFO L226 Difference]: Without dead ends: 147 [2018-09-28 10:29:20,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-28 10:29:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-28 10:29:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-28 10:29:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-09-28 10:29:20,793 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-09-28 10:29:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:20,794 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-09-28 10:29:20,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-28 10:29:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-09-28 10:29:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-28 10:29:20,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:20,795 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:20,795 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:20,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-09-28 10:29:20,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:20,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:20,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:21,253 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:21,253 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 [2018-09-28 10:29:21,261 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:21,356 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:21,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:21,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:21,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:21,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-28 10:29:21,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-28 10:29:21,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-28 10:29:21,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:21,664 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-09-28 10:29:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:22,627 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-09-28 10:29:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-28 10:29:22,627 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-09-28 10:29:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:22,628 INFO L225 Difference]: With dead ends: 163 [2018-09-28 10:29:22,628 INFO L226 Difference]: Without dead ends: 149 [2018-09-28 10:29:22,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-28 10:29:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-28 10:29:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-28 10:29:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-09-28 10:29:22,635 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-09-28 10:29:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:22,635 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-09-28 10:29:22,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-28 10:29:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-09-28 10:29:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-28 10:29:22,636 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:22,636 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:22,637 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:22,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-09-28 10:29:22,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:22,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:22,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:23,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:23,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:23,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:23,293 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-28 10:29:23,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:23,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:23,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:23,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-28 10:29:23,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-28 10:29:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-28 10:29:23,603 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:23,603 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-09-28 10:29:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:24,230 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-09-28 10:29:24,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-28 10:29:24,230 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-09-28 10:29:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:24,231 INFO L225 Difference]: With dead ends: 165 [2018-09-28 10:29:24,231 INFO L226 Difference]: Without dead ends: 151 [2018-09-28 10:29:24,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-28 10:29:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-28 10:29:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-28 10:29:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-09-28 10:29:24,237 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-09-28 10:29:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:24,238 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-09-28 10:29:24,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-28 10:29:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-09-28 10:29:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-28 10:29:24,239 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:24,239 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:24,239 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:24,239 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-09-28 10:29:24,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:24,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:24,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:24,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:24,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:24,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:24,656 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 [2018-09-28 10:29:24,663 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:24,848 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-28 10:29:24,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:24,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:25,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:25,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-28 10:29:25,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-28 10:29:25,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-28 10:29:25,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:25,132 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-09-28 10:29:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:25,963 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-09-28 10:29:25,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-28 10:29:25,964 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-09-28 10:29:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:25,965 INFO L225 Difference]: With dead ends: 167 [2018-09-28 10:29:25,965 INFO L226 Difference]: Without dead ends: 153 [2018-09-28 10:29:25,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-28 10:29:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-28 10:29:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-28 10:29:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-09-28 10:29:25,969 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-09-28 10:29:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:25,970 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-09-28 10:29:25,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-28 10:29:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-09-28 10:29:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-28 10:29:25,970 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:25,970 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:25,971 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:25,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-09-28 10:29:25,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:25,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:25,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:25,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:25,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:26,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:26,380 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 [2018-09-28 10:29:26,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:26,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:26,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:26,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-28 10:29:26,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-28 10:29:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-28 10:29:26,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:26,772 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-09-28 10:29:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:27,854 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-09-28 10:29:27,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-28 10:29:27,855 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-09-28 10:29:27,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:27,855 INFO L225 Difference]: With dead ends: 169 [2018-09-28 10:29:27,856 INFO L226 Difference]: Without dead ends: 155 [2018-09-28 10:29:27,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-28 10:29:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-28 10:29:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-28 10:29:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-09-28 10:29:27,860 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-09-28 10:29:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:27,861 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-09-28 10:29:27,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-28 10:29:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-09-28 10:29:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-28 10:29:27,861 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:27,861 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:27,862 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:27,862 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-09-28 10:29:27,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:27,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:27,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:28,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:28,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:28,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:29:28,363 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:29:28,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:28,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:28,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:28,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-28 10:29:28,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-28 10:29:28,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-28 10:29:28,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:28,917 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-09-28 10:29:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:29,864 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-09-28 10:29:29,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-28 10:29:29,864 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-09-28 10:29:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:29,865 INFO L225 Difference]: With dead ends: 171 [2018-09-28 10:29:29,865 INFO L226 Difference]: Without dead ends: 157 [2018-09-28 10:29:29,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-28 10:29:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-28 10:29:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-28 10:29:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-09-28 10:29:29,870 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-09-28 10:29:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:29,870 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-09-28 10:29:29,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-28 10:29:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-09-28 10:29:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-28 10:29:29,870 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:29,871 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:29,871 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:29,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-09-28 10:29:29,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:29,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:29,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:30,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:30,306 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 [2018-09-28 10:29:30,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:30,514 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-28 10:29:30,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:30,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:30,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:30,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-28 10:29:30,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-28 10:29:30,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-28 10:29:30,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:30,793 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-09-28 10:29:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:31,552 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-09-28 10:29:31,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-28 10:29:31,552 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-09-28 10:29:31,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:31,553 INFO L225 Difference]: With dead ends: 173 [2018-09-28 10:29:31,553 INFO L226 Difference]: Without dead ends: 159 [2018-09-28 10:29:31,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-28 10:29:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-28 10:29:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-28 10:29:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-09-28 10:29:31,559 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-09-28 10:29:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:31,559 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-09-28 10:29:31,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-28 10:29:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-09-28 10:29:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-28 10:29:31,560 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:31,560 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:31,560 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:31,560 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-09-28 10:29:31,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:31,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:31,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:31,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:31,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:31,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:31,977 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 [2018-09-28 10:29:31,984 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:32,085 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:32,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:32,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:32,406 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:32,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-28 10:29:32,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-28 10:29:32,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-28 10:29:32,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:32,408 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-09-28 10:29:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:33,386 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-09-28 10:29:33,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-28 10:29:33,386 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-09-28 10:29:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:33,387 INFO L225 Difference]: With dead ends: 175 [2018-09-28 10:29:33,388 INFO L226 Difference]: Without dead ends: 161 [2018-09-28 10:29:33,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-28 10:29:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-28 10:29:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-28 10:29:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-09-28 10:29:33,394 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-09-28 10:29:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:33,394 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-09-28 10:29:33,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-28 10:29:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-09-28 10:29:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-28 10:29:33,395 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:33,396 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:33,396 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:33,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-09-28 10:29:33,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:33,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:33,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:33,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:33,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:34,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:34,281 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 [2018-09-28 10:29:34,288 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:34,482 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-28 10:29:34,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:34,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:34,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:34,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-28 10:29:34,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-28 10:29:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-28 10:29:34,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:34,871 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-09-28 10:29:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:35,783 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-09-28 10:29:35,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-28 10:29:35,783 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-09-28 10:29:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:35,784 INFO L225 Difference]: With dead ends: 177 [2018-09-28 10:29:35,784 INFO L226 Difference]: Without dead ends: 163 [2018-09-28 10:29:35,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-28 10:29:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-28 10:29:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-28 10:29:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-09-28 10:29:35,793 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-09-28 10:29:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:35,794 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-09-28 10:29:35,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-28 10:29:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-09-28 10:29:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-28 10:29:35,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:35,795 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:35,795 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:35,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-09-28 10:29:35,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:35,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:35,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:35,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:35,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:36,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:36,237 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 [2018-09-28 10:29:36,244 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:36,465 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-09-28 10:29:36,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:36,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:36,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:36,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-28 10:29:36,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-28 10:29:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-28 10:29:36,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:36,755 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-09-28 10:29:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:37,374 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-09-28 10:29:37,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-28 10:29:37,374 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-09-28 10:29:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:37,375 INFO L225 Difference]: With dead ends: 179 [2018-09-28 10:29:37,375 INFO L226 Difference]: Without dead ends: 165 [2018-09-28 10:29:37,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-28 10:29:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-09-28 10:29:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-28 10:29:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-09-28 10:29:37,380 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-09-28 10:29:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:37,380 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-09-28 10:29:37,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-28 10:29:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-09-28 10:29:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-28 10:29:37,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:37,381 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:37,381 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:37,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:37,382 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-09-28 10:29:37,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:37,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:37,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:37,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:37,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:37,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:37,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:38,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:38,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:38,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-28 10:29:38,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-28 10:29:38,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-28 10:29:38,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:38,484 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-09-28 10:29:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:39,517 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-09-28 10:29:39,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-28 10:29:39,517 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-09-28 10:29:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:39,518 INFO L225 Difference]: With dead ends: 181 [2018-09-28 10:29:39,518 INFO L226 Difference]: Without dead ends: 167 [2018-09-28 10:29:39,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-28 10:29:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-28 10:29:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-28 10:29:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-09-28 10:29:39,523 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-09-28 10:29:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:39,523 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-09-28 10:29:39,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-28 10:29:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-09-28 10:29:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-28 10:29:39,523 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:39,524 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:39,524 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:39,524 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:39,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-09-28 10:29:39,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:39,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:39,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:39,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:39,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:39,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:39,969 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 [2018-09-28 10:29:39,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:29:40,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:29:40,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:40,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:40,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:40,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-28 10:29:40,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-28 10:29:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-28 10:29:40,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:40,383 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-09-28 10:29:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:41,245 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-09-28 10:29:41,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-28 10:29:41,245 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-09-28 10:29:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:41,246 INFO L225 Difference]: With dead ends: 183 [2018-09-28 10:29:41,246 INFO L226 Difference]: Without dead ends: 169 [2018-09-28 10:29:41,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-28 10:29:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-28 10:29:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-28 10:29:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-09-28 10:29:41,251 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-09-28 10:29:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:41,252 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-09-28 10:29:41,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-28 10:29:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-09-28 10:29:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-28 10:29:41,252 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:41,252 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:41,253 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:41,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-09-28 10:29:41,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:41,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:41,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:41,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:41,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:41,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:41,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:41,706 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:41,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-09-28 10:29:41,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:41,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:42,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:42,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-28 10:29:42,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-28 10:29:42,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-28 10:29:42,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:42,232 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-09-28 10:29:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:43,072 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-09-28 10:29:43,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-28 10:29:43,072 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-09-28 10:29:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:43,073 INFO L225 Difference]: With dead ends: 185 [2018-09-28 10:29:43,073 INFO L226 Difference]: Without dead ends: 171 [2018-09-28 10:29:43,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-28 10:29:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-28 10:29:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-28 10:29:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-09-28 10:29:43,078 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-09-28 10:29:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:43,078 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-09-28 10:29:43,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-28 10:29:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-09-28 10:29:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-28 10:29:43,079 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:43,079 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:43,080 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:43,080 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:43,080 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-09-28 10:29:43,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:43,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:43,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:43,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:43,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:43,599 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:43,706 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:43,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:43,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:44,017 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:44,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-28 10:29:44,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-28 10:29:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-28 10:29:44,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:44,018 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-09-28 10:29:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:44,715 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-09-28 10:29:44,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-28 10:29:44,715 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-09-28 10:29:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:44,716 INFO L225 Difference]: With dead ends: 187 [2018-09-28 10:29:44,716 INFO L226 Difference]: Without dead ends: 173 [2018-09-28 10:29:44,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-28 10:29:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-28 10:29:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-28 10:29:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-09-28 10:29:44,723 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-09-28 10:29:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:44,723 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-09-28 10:29:44,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-28 10:29:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-09-28 10:29:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-28 10:29:44,724 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:44,725 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:44,725 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:44,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:44,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-09-28 10:29:44,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:44,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:44,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:44,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:44,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:45,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:45,197 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 [2018-09-28 10:29:45,205 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:45,426 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-09-28 10:29:45,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:45,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:45,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:45,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-28 10:29:45,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-28 10:29:45,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-28 10:29:45,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:45,751 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-09-28 10:29:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:46,452 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-09-28 10:29:46,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-28 10:29:46,453 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-09-28 10:29:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:46,453 INFO L225 Difference]: With dead ends: 189 [2018-09-28 10:29:46,453 INFO L226 Difference]: Without dead ends: 175 [2018-09-28 10:29:46,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-28 10:29:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-28 10:29:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-28 10:29:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-09-28 10:29:46,459 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-09-28 10:29:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:46,460 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-09-28 10:29:46,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-28 10:29:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-09-28 10:29:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-28 10:29:46,461 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:46,461 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:46,461 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:46,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:46,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-09-28 10:29:46,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:46,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:46,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:46,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:46,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:46,971 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:46,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:46,992 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:47,217 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-09-28 10:29:47,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:47,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:47,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:47,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-28 10:29:47,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-28 10:29:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-28 10:29:47,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:47,530 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-09-28 10:29:48,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:48,427 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-09-28 10:29:48,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-28 10:29:48,427 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-09-28 10:29:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:48,428 INFO L225 Difference]: With dead ends: 191 [2018-09-28 10:29:48,428 INFO L226 Difference]: Without dead ends: 177 [2018-09-28 10:29:48,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-09-28 10:29:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-09-28 10:29:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-28 10:29:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-09-28 10:29:48,433 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-09-28 10:29:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:48,434 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-09-28 10:29:48,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-28 10:29:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-09-28 10:29:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-28 10:29:48,435 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:48,435 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:48,435 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:48,435 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-09-28 10:29:48,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:48,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:48,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:48,938 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:48,938 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 [2018-09-28 10:29:48,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:49,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:49,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:49,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-28 10:29:49,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-28 10:29:49,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-28 10:29:49,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:49,406 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-09-28 10:29:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:50,336 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-09-28 10:29:50,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-28 10:29:50,337 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-09-28 10:29:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:50,338 INFO L225 Difference]: With dead ends: 193 [2018-09-28 10:29:50,338 INFO L226 Difference]: Without dead ends: 179 [2018-09-28 10:29:50,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-28 10:29:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-28 10:29:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-28 10:29:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-09-28 10:29:50,343 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-09-28 10:29:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:50,343 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-09-28 10:29:50,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-28 10:29:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-09-28 10:29:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-28 10:29:50,344 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:50,344 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:50,345 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:50,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:50,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-09-28 10:29:50,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:50,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:50,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:50,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:29:50,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:51,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:51,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:51,077 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:29:51,192 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:29:51,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:51,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:51,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:51,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-28 10:29:51,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-28 10:29:51,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-28 10:29:51,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:51,532 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-09-28 10:29:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:52,380 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-09-28 10:29:52,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-28 10:29:52,380 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-09-28 10:29:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:52,381 INFO L225 Difference]: With dead ends: 195 [2018-09-28 10:29:52,381 INFO L226 Difference]: Without dead ends: 181 [2018-09-28 10:29:52,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-28 10:29:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-28 10:29:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-28 10:29:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-09-28 10:29:52,387 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-09-28 10:29:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:52,387 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-09-28 10:29:52,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-28 10:29:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-09-28 10:29:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-28 10:29:52,387 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:52,388 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:52,388 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:52,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-09-28 10:29:52,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:52,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:52,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:52,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:52,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:52,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:52,877 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 [2018-09-28 10:29:52,885 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:29:53,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-09-28 10:29:53,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:53,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:53,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:53,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-28 10:29:53,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-28 10:29:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-28 10:29:53,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:53,728 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-09-28 10:29:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:54,484 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-09-28 10:29:54,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-28 10:29:54,484 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-09-28 10:29:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:54,485 INFO L225 Difference]: With dead ends: 197 [2018-09-28 10:29:54,485 INFO L226 Difference]: Without dead ends: 183 [2018-09-28 10:29:54,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-28 10:29:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-28 10:29:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-28 10:29:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-09-28 10:29:54,492 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-09-28 10:29:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:54,492 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-09-28 10:29:54,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-28 10:29:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-09-28 10:29:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-28 10:29:54,493 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:54,493 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:54,493 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:54,494 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-09-28 10:29:54,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:54,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:54,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:54,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:54,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:55,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:55,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:29:55,045 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:29:55,157 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:29:55,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:55,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:55,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:55,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-28 10:29:55,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-28 10:29:55,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-28 10:29:55,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:55,495 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-09-28 10:29:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:56,432 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-09-28 10:29:56,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-28 10:29:56,432 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-09-28 10:29:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:56,433 INFO L225 Difference]: With dead ends: 199 [2018-09-28 10:29:56,433 INFO L226 Difference]: Without dead ends: 185 [2018-09-28 10:29:56,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-28 10:29:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-28 10:29:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-28 10:29:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-09-28 10:29:56,439 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-09-28 10:29:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:56,439 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-09-28 10:29:56,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-28 10:29:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-09-28 10:29:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-28 10:29:56,440 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:56,440 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:56,440 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:56,440 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:56,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-09-28 10:29:56,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:56,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:56,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:56,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:56,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:56,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:56,950 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 [2018-09-28 10:29:56,961 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:29:57,206 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-09-28 10:29:57,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:57,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:57,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:57,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-28 10:29:57,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-28 10:29:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-28 10:29:57,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:57,549 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-09-28 10:29:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:29:58,629 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-09-28 10:29:58,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-28 10:29:58,629 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-09-28 10:29:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:29:58,630 INFO L225 Difference]: With dead ends: 201 [2018-09-28 10:29:58,630 INFO L226 Difference]: Without dead ends: 187 [2018-09-28 10:29:58,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:29:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-28 10:29:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-28 10:29:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-28 10:29:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-09-28 10:29:58,638 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-09-28 10:29:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:29:58,638 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-09-28 10:29:58,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-28 10:29:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-09-28 10:29:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-28 10:29:58,639 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:29:58,639 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:29:58,639 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:29:58,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:29:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-09-28 10:29:58,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:29:58,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:29:58,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:58,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:29:58,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:29:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:29:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:59,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:29:59,182 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 [2018-09-28 10:29:59,191 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:29:59,443 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-09-28 10:29:59,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:29:59,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:29:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:29:59,791 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:29:59,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-28 10:29:59,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-28 10:29:59,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-28 10:29:59,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:29:59,794 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-09-28 10:30:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:00,607 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-09-28 10:30:00,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-28 10:30:00,607 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-09-28 10:30:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:00,608 INFO L225 Difference]: With dead ends: 203 [2018-09-28 10:30:00,608 INFO L226 Difference]: Without dead ends: 189 [2018-09-28 10:30:00,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-09-28 10:30:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-09-28 10:30:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-28 10:30:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-09-28 10:30:00,616 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-09-28 10:30:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:00,616 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-09-28 10:30:00,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-28 10:30:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-09-28 10:30:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-28 10:30:00,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:00,618 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:00,618 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:00,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-09-28 10:30:00,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:00,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:00,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:00,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:00,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:01,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:01,166 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 [2018-09-28 10:30:01,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:01,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:01,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:01,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-28 10:30:01,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-28 10:30:01,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-28 10:30:01,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:01,667 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-09-28 10:30:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:02,426 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-09-28 10:30:02,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-28 10:30:02,426 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-09-28 10:30:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:02,427 INFO L225 Difference]: With dead ends: 205 [2018-09-28 10:30:02,427 INFO L226 Difference]: Without dead ends: 191 [2018-09-28 10:30:02,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-28 10:30:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-28 10:30:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-28 10:30:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-09-28 10:30:02,434 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-09-28 10:30:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:02,434 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-09-28 10:30:02,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-28 10:30:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-09-28 10:30:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-28 10:30:02,435 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:02,435 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:02,435 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:02,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-09-28 10:30:02,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:02,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:02,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:02,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:02,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:03,027 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:03,027 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 [2018-09-28 10:30:03,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:30:03,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:30:03,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:03,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:03,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:03,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-28 10:30:03,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-28 10:30:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-28 10:30:03,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:03,755 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-09-28 10:30:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:04,856 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-09-28 10:30:04,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-28 10:30:04,857 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-09-28 10:30:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:04,857 INFO L225 Difference]: With dead ends: 207 [2018-09-28 10:30:04,857 INFO L226 Difference]: Without dead ends: 193 [2018-09-28 10:30:04,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-28 10:30:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-28 10:30:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-28 10:30:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-09-28 10:30:04,863 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-09-28 10:30:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:04,863 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-09-28 10:30:04,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-28 10:30:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-09-28 10:30:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-28 10:30:04,864 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:04,864 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:04,864 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:04,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-09-28 10:30:04,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:04,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:04,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:04,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:04,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:05,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:05,441 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 [2018-09-28 10:30:05,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:30:05,735 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-09-28 10:30:05,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:05,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:06,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:06,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-28 10:30:06,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-28 10:30:06,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-28 10:30:06,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:06,101 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-09-28 10:30:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:06,927 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-09-28 10:30:06,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-28 10:30:06,927 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-09-28 10:30:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:06,928 INFO L225 Difference]: With dead ends: 209 [2018-09-28 10:30:06,928 INFO L226 Difference]: Without dead ends: 195 [2018-09-28 10:30:06,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-28 10:30:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-28 10:30:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-28 10:30:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-09-28 10:30:06,934 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-09-28 10:30:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:06,934 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-09-28 10:30:06,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-28 10:30:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-09-28 10:30:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-28 10:30:06,935 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:06,935 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:06,935 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:06,935 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:06,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-09-28 10:30:06,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:06,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:06,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:07,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:07,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:07,706 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:30:07,831 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:30:07,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:07,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:08,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:08,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-28 10:30:08,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-28 10:30:08,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-28 10:30:08,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:08,195 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-09-28 10:30:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:09,330 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-09-28 10:30:09,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-28 10:30:09,330 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-09-28 10:30:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:09,331 INFO L225 Difference]: With dead ends: 211 [2018-09-28 10:30:09,331 INFO L226 Difference]: Without dead ends: 197 [2018-09-28 10:30:09,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-09-28 10:30:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-09-28 10:30:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-28 10:30:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-09-28 10:30:09,337 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-09-28 10:30:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:09,337 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-09-28 10:30:09,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-28 10:30:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-09-28 10:30:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-28 10:30:09,338 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:09,338 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:09,338 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:09,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-09-28 10:30:09,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:09,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:09,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:09,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:09,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:09,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:09,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:09,913 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:30:10,200 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-09-28 10:30:10,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:10,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:10,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:10,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-28 10:30:10,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-28 10:30:10,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-28 10:30:10,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:10,575 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-09-28 10:30:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:11,732 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-09-28 10:30:11,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-28 10:30:11,733 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-09-28 10:30:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:11,733 INFO L225 Difference]: With dead ends: 213 [2018-09-28 10:30:11,733 INFO L226 Difference]: Without dead ends: 199 [2018-09-28 10:30:11,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-28 10:30:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-28 10:30:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-28 10:30:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-09-28 10:30:11,740 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-09-28 10:30:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:11,740 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-09-28 10:30:11,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-28 10:30:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-09-28 10:30:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-28 10:30:11,741 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:11,741 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:11,741 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:11,741 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-09-28 10:30:11,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:11,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:11,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:11,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:11,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:12,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:12,317 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 [2018-09-28 10:30:12,324 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:30:12,608 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-09-28 10:30:12,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:12,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:12,976 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:12,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-28 10:30:12,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-28 10:30:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-28 10:30:12,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:12,979 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-09-28 10:30:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:14,077 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-09-28 10:30:14,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-28 10:30:14,078 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-09-28 10:30:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:14,078 INFO L225 Difference]: With dead ends: 215 [2018-09-28 10:30:14,079 INFO L226 Difference]: Without dead ends: 201 [2018-09-28 10:30:14,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-28 10:30:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-09-28 10:30:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-28 10:30:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-09-28 10:30:14,084 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-09-28 10:30:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:14,085 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-09-28 10:30:14,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-28 10:30:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-09-28 10:30:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-28 10:30:14,085 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:14,085 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:14,086 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:14,086 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:14,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-09-28 10:30:14,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:14,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:14,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:14,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:14,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:14,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:14,700 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 [2018-09-28 10:30:14,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:14,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:15,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:15,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-28 10:30:15,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-28 10:30:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-28 10:30:15,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:15,256 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-09-28 10:30:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:16,421 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-09-28 10:30:16,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-28 10:30:16,421 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-09-28 10:30:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:16,422 INFO L225 Difference]: With dead ends: 217 [2018-09-28 10:30:16,422 INFO L226 Difference]: Without dead ends: 203 [2018-09-28 10:30:16,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-28 10:30:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-28 10:30:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-28 10:30:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-09-28 10:30:16,428 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-09-28 10:30:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:16,428 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-09-28 10:30:16,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-28 10:30:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-09-28 10:30:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-28 10:30:16,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:16,429 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:16,429 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:16,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-09-28 10:30:16,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:16,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:16,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:16,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:16,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:17,035 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:17,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:17,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:30:17,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:30:17,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:17,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:17,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:17,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-28 10:30:17,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-28 10:30:17,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-28 10:30:17,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:17,558 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-09-28 10:30:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:18,962 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-09-28 10:30:18,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-28 10:30:18,962 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-09-28 10:30:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:18,963 INFO L225 Difference]: With dead ends: 219 [2018-09-28 10:30:18,963 INFO L226 Difference]: Without dead ends: 205 [2018-09-28 10:30:18,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-28 10:30:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-28 10:30:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-28 10:30:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-09-28 10:30:18,969 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-09-28 10:30:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:18,969 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-09-28 10:30:18,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-28 10:30:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-09-28 10:30:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-28 10:30:18,970 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:18,970 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:18,970 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:18,970 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-09-28 10:30:18,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:18,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:18,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:18,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:18,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:19,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:19,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:19,610 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:30:19,936 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-09-28 10:30:19,936 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:19,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:20,313 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:20,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-28 10:30:20,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-28 10:30:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-28 10:30:20,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:20,315 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-09-28 10:30:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:21,241 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-09-28 10:30:21,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-28 10:30:21,241 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-09-28 10:30:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:21,242 INFO L225 Difference]: With dead ends: 221 [2018-09-28 10:30:21,242 INFO L226 Difference]: Without dead ends: 207 [2018-09-28 10:30:21,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-28 10:30:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-28 10:30:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-28 10:30:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-09-28 10:30:21,250 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-09-28 10:30:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:21,250 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-09-28 10:30:21,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-28 10:30:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-09-28 10:30:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-28 10:30:21,251 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:21,251 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:21,251 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:21,252 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:21,252 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-09-28 10:30:21,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:21,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:21,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:21,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:21,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:21,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:21,872 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 [2018-09-28 10:30:21,880 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:30:22,012 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:30:22,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:22,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:22,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:22,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-28 10:30:22,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-28 10:30:22,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-28 10:30:22,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:22,409 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-09-28 10:30:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:23,709 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-09-28 10:30:23,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-28 10:30:23,709 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-09-28 10:30:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:23,710 INFO L225 Difference]: With dead ends: 223 [2018-09-28 10:30:23,710 INFO L226 Difference]: Without dead ends: 209 [2018-09-28 10:30:23,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-28 10:30:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-28 10:30:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-28 10:30:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-09-28 10:30:23,716 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-09-28 10:30:23,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:23,716 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-09-28 10:30:23,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-28 10:30:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-09-28 10:30:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-28 10:30:23,717 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:23,717 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:23,717 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:23,717 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:23,718 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-09-28 10:30:23,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:23,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:23,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:23,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:23,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:24,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:24,552 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 [2018-09-28 10:30:24,559 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:30:24,865 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-09-28 10:30:24,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:24,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:25,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:25,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-28 10:30:25,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-28 10:30:25,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-28 10:30:25,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:25,260 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-09-28 10:30:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:26,289 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-09-28 10:30:26,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-28 10:30:26,289 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-09-28 10:30:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:26,290 INFO L225 Difference]: With dead ends: 225 [2018-09-28 10:30:26,290 INFO L226 Difference]: Without dead ends: 211 [2018-09-28 10:30:26,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-28 10:30:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-28 10:30:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-28 10:30:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-09-28 10:30:26,296 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-09-28 10:30:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:26,296 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-09-28 10:30:26,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-28 10:30:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-09-28 10:30:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-28 10:30:26,297 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:26,297 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:26,297 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:26,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-09-28 10:30:26,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:26,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:26,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:26,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:26,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:26,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:26,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:26,943 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:30:27,254 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-09-28 10:30:27,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:27,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:27,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:27,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-28 10:30:27,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-28 10:30:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-28 10:30:27,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:27,657 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-09-28 10:30:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:29,034 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-09-28 10:30:29,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-28 10:30:29,034 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-09-28 10:30:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:29,035 INFO L225 Difference]: With dead ends: 227 [2018-09-28 10:30:29,035 INFO L226 Difference]: Without dead ends: 213 [2018-09-28 10:30:29,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-28 10:30:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-28 10:30:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-28 10:30:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-09-28 10:30:29,041 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-09-28 10:30:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:29,041 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-09-28 10:30:29,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-28 10:30:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-09-28 10:30:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-28 10:30:29,042 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:29,042 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:29,043 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:29,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:29,043 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-09-28 10:30:29,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:29,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:29,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:29,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:29,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:29,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:29,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:29,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:29,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:30,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:30,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-28 10:30:30,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-28 10:30:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-28 10:30:30,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:30,302 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-09-28 10:30:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:31,418 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-09-28 10:30:31,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-28 10:30:31,418 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-09-28 10:30:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:31,419 INFO L225 Difference]: With dead ends: 229 [2018-09-28 10:30:31,419 INFO L226 Difference]: Without dead ends: 215 [2018-09-28 10:30:31,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-28 10:30:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-28 10:30:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-28 10:30:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-09-28 10:30:31,428 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-09-28 10:30:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:31,428 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-09-28 10:30:31,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-28 10:30:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-09-28 10:30:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-28 10:30:31,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:31,429 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:31,430 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:31,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-09-28 10:30:31,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:31,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:31,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:31,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:31,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:32,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:32,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:32,112 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:30:32,253 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:30:32,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:32,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:32,702 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:32,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-28 10:30:32,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-28 10:30:32,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-28 10:30:32,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:32,705 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-09-28 10:30:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:34,119 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-09-28 10:30:34,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-28 10:30:34,119 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-09-28 10:30:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:34,121 INFO L225 Difference]: With dead ends: 231 [2018-09-28 10:30:34,121 INFO L226 Difference]: Without dead ends: 217 [2018-09-28 10:30:34,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-28 10:30:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-28 10:30:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-28 10:30:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-09-28 10:30:34,130 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-09-28 10:30:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:34,130 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-09-28 10:30:34,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-28 10:30:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-09-28 10:30:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-28 10:30:34,131 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:34,131 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:34,131 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:34,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:34,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-09-28 10:30:34,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:34,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:34,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:34,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:34,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:34,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:30:35,317 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-09-28 10:30:35,317 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:35,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:35,731 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:35,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-28 10:30:35,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-28 10:30:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-28 10:30:35,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:35,734 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-09-28 10:30:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:36,807 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-09-28 10:30:36,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-28 10:30:36,807 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-09-28 10:30:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:36,808 INFO L225 Difference]: With dead ends: 233 [2018-09-28 10:30:36,808 INFO L226 Difference]: Without dead ends: 219 [2018-09-28 10:30:36,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-28 10:30:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-28 10:30:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-28 10:30:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-09-28 10:30:36,816 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-09-28 10:30:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:36,816 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-09-28 10:30:36,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-28 10:30:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-09-28 10:30:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-28 10:30:36,818 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:36,818 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:36,818 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:36,818 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-09-28 10:30:36,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:36,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:36,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:36,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:36,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:37,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:37,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:37,556 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:30:37,691 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:30:37,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:37,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:38,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:38,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-28 10:30:38,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-28 10:30:38,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-28 10:30:38,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:38,231 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-09-28 10:30:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:39,731 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-09-28 10:30:39,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-28 10:30:39,731 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-09-28 10:30:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:39,732 INFO L225 Difference]: With dead ends: 235 [2018-09-28 10:30:39,732 INFO L226 Difference]: Without dead ends: 221 [2018-09-28 10:30:39,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-28 10:30:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-09-28 10:30:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-28 10:30:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-09-28 10:30:39,738 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-09-28 10:30:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:39,738 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-09-28 10:30:39,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-28 10:30:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-09-28 10:30:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-28 10:30:39,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:39,740 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:39,740 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:39,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:39,740 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-09-28 10:30:39,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:39,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:39,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:39,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:39,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:40,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:40,497 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 [2018-09-28 10:30:40,505 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:30:40,846 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-09-28 10:30:40,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:40,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:41,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:41,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-28 10:30:41,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-28 10:30:41,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-28 10:30:41,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:41,267 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-09-28 10:30:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:42,692 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-09-28 10:30:42,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-28 10:30:42,692 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-09-28 10:30:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:42,693 INFO L225 Difference]: With dead ends: 237 [2018-09-28 10:30:42,693 INFO L226 Difference]: Without dead ends: 223 [2018-09-28 10:30:42,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-28 10:30:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-28 10:30:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-28 10:30:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-09-28 10:30:42,702 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-09-28 10:30:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:42,702 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-09-28 10:30:42,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-28 10:30:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-09-28 10:30:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-28 10:30:42,703 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:42,703 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:42,703 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:42,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:42,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-09-28 10:30:42,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:42,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:42,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:42,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:42,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:43,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:43,451 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 [2018-09-28 10:30:43,459 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:30:43,819 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-09-28 10:30:43,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:43,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:44,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:44,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-28 10:30:44,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-28 10:30:44,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-28 10:30:44,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:44,255 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-09-28 10:30:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:45,845 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-09-28 10:30:45,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-28 10:30:45,846 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-09-28 10:30:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:45,846 INFO L225 Difference]: With dead ends: 239 [2018-09-28 10:30:45,846 INFO L226 Difference]: Without dead ends: 225 [2018-09-28 10:30:45,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-09-28 10:30:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-09-28 10:30:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-09-28 10:30:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-09-28 10:30:45,852 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-09-28 10:30:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:45,853 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-09-28 10:30:45,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-28 10:30:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-09-28 10:30:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-28 10:30:45,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:45,853 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:45,854 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:45,854 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-09-28 10:30:45,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:45,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:45,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:45,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:45,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:46,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:46,657 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 [2018-09-28 10:30:46,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:46,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:47,309 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:47,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-28 10:30:47,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-28 10:30:47,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-28 10:30:47,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:47,312 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-09-28 10:30:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:48,623 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-09-28 10:30:48,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-28 10:30:48,623 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-09-28 10:30:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:48,624 INFO L225 Difference]: With dead ends: 241 [2018-09-28 10:30:48,624 INFO L226 Difference]: Without dead ends: 227 [2018-09-28 10:30:48,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-28 10:30:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-28 10:30:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-28 10:30:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-09-28 10:30:48,633 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-09-28 10:30:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:48,633 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-09-28 10:30:48,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-28 10:30:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-09-28 10:30:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-28 10:30:48,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:48,634 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:48,634 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:48,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-09-28 10:30:48,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:48,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:48,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:48,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:30:48,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:49,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:49,397 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 [2018-09-28 10:30:49,406 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:30:49,557 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:30:49,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:49,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:50,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:50,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-28 10:30:50,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-28 10:30:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-28 10:30:50,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:50,067 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-09-28 10:30:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:51,312 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-09-28 10:30:51,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-28 10:30:51,313 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-09-28 10:30:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:51,313 INFO L225 Difference]: With dead ends: 243 [2018-09-28 10:30:51,313 INFO L226 Difference]: Without dead ends: 229 [2018-09-28 10:30:51,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-09-28 10:30:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-09-28 10:30:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-28 10:30:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-09-28 10:30:51,319 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-09-28 10:30:51,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:51,319 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-09-28 10:30:51,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-28 10:30:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-09-28 10:30:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-28 10:30:51,319 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:51,319 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:51,320 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:51,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-09-28 10:30:51,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:51,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:51,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:51,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:51,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:52,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:52,029 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 [2018-09-28 10:30:52,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:30:52,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-09-28 10:30:52,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:52,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:52,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:52,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-28 10:30:52,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-28 10:30:52,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-28 10:30:52,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:52,877 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-09-28 10:30:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:54,160 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-09-28 10:30:54,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-28 10:30:54,160 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-09-28 10:30:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:54,161 INFO L225 Difference]: With dead ends: 245 [2018-09-28 10:30:54,161 INFO L226 Difference]: Without dead ends: 231 [2018-09-28 10:30:54,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-28 10:30:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-28 10:30:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-28 10:30:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-09-28 10:30:54,167 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-09-28 10:30:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:54,168 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-09-28 10:30:54,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-28 10:30:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-09-28 10:30:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-28 10:30:54,168 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:54,169 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:54,169 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:54,169 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-09-28 10:30:54,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:54,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:54,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:54,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:54,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:55,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:55,203 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 [2018-09-28 10:30:55,211 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:30:55,364 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:30:55,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:55,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:55,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:55,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-28 10:30:55,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-28 10:30:55,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-28 10:30:55,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:55,837 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-09-28 10:30:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:30:57,371 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-09-28 10:30:57,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-28 10:30:57,371 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-09-28 10:30:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:30:57,372 INFO L225 Difference]: With dead ends: 247 [2018-09-28 10:30:57,372 INFO L226 Difference]: Without dead ends: 233 [2018-09-28 10:30:57,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:30:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-28 10:30:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-09-28 10:30:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-09-28 10:30:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-09-28 10:30:57,378 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-09-28 10:30:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:30:57,378 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-09-28 10:30:57,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-28 10:30:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-09-28 10:30:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-28 10:30:57,379 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:30:57,379 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:30:57,379 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:30:57,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:30:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-09-28 10:30:57,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:30:57,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:30:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:57,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:30:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:30:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:30:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:58,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:30:58,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:30:58,143 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:30:58,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-09-28 10:30:58,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:30:58,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:30:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:30:59,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:30:59,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-28 10:30:59,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-28 10:30:59,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-28 10:30:59,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:30:59,003 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-09-28 10:31:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:00,687 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-09-28 10:31:00,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-28 10:31:00,687 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-09-28 10:31:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:00,688 INFO L225 Difference]: With dead ends: 249 [2018-09-28 10:31:00,688 INFO L226 Difference]: Without dead ends: 235 [2018-09-28 10:31:00,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-28 10:31:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-28 10:31:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-28 10:31:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-09-28 10:31:00,694 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-09-28 10:31:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:00,694 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-09-28 10:31:00,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-28 10:31:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-09-28 10:31:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-28 10:31:00,695 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:00,695 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:00,695 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:00,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-09-28 10:31:00,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:00,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:00,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:00,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:00,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:01,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:01,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:31:01,492 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:31:01,904 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-09-28 10:31:01,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:01,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:02,385 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:02,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-28 10:31:02,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-28 10:31:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-28 10:31:02,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:02,387 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-09-28 10:31:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:03,924 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-09-28 10:31:03,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-28 10:31:03,924 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-09-28 10:31:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:03,925 INFO L225 Difference]: With dead ends: 251 [2018-09-28 10:31:03,925 INFO L226 Difference]: Without dead ends: 237 [2018-09-28 10:31:03,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-09-28 10:31:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-09-28 10:31:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-09-28 10:31:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-09-28 10:31:03,931 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-09-28 10:31:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:03,931 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-09-28 10:31:03,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-28 10:31:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-09-28 10:31:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-28 10:31:03,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:03,932 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:03,932 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:03,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:03,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-09-28 10:31:03,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:03,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:03,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:03,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:03,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:04,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:04,716 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 [2018-09-28 10:31:04,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:04,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:05,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:05,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-28 10:31:05,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-28 10:31:05,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-28 10:31:05,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:05,486 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-09-28 10:31:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:06,883 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-09-28 10:31:06,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-28 10:31:06,883 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-09-28 10:31:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:06,884 INFO L225 Difference]: With dead ends: 253 [2018-09-28 10:31:06,884 INFO L226 Difference]: Without dead ends: 239 [2018-09-28 10:31:06,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-28 10:31:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-28 10:31:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-28 10:31:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-09-28 10:31:06,893 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-09-28 10:31:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:06,893 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-09-28 10:31:06,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-28 10:31:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-09-28 10:31:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-28 10:31:06,894 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:06,894 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:06,894 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:06,895 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:06,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-09-28 10:31:06,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:06,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:06,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:07,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:07,760 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 [2018-09-28 10:31:07,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:31:07,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:31:07,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:07,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:08,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:08,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-28 10:31:08,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-28 10:31:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-28 10:31:08,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:08,407 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-09-28 10:31:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:10,373 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-09-28 10:31:10,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-28 10:31:10,373 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-09-28 10:31:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:10,374 INFO L225 Difference]: With dead ends: 255 [2018-09-28 10:31:10,374 INFO L226 Difference]: Without dead ends: 241 [2018-09-28 10:31:10,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-09-28 10:31:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-09-28 10:31:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-09-28 10:31:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-09-28 10:31:10,380 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-09-28 10:31:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:10,380 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-09-28 10:31:10,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-28 10:31:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-09-28 10:31:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-28 10:31:10,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:10,381 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:10,381 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:10,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-09-28 10:31:10,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:10,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:10,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:10,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:10,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:11,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:11,196 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 [2018-09-28 10:31:11,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:31:11,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-09-28 10:31:11,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:11,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:12,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:12,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-28 10:31:12,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-28 10:31:12,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-28 10:31:12,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:12,128 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-09-28 10:31:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:13,879 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-09-28 10:31:13,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-28 10:31:13,879 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-09-28 10:31:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:13,880 INFO L225 Difference]: With dead ends: 257 [2018-09-28 10:31:13,880 INFO L226 Difference]: Without dead ends: 243 [2018-09-28 10:31:13,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-28 10:31:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-28 10:31:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-28 10:31:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-09-28 10:31:13,886 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-09-28 10:31:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:13,886 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-09-28 10:31:13,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-28 10:31:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-09-28 10:31:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-28 10:31:13,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:13,887 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:13,887 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:13,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-09-28 10:31:13,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:13,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:13,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:13,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:13,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:14,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:14,752 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 [2018-09-28 10:31:14,760 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:31:14,920 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:31:14,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:14,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:15,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:15,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-28 10:31:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-28 10:31:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-28 10:31:15,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:15,796 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-09-28 10:31:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:17,585 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-09-28 10:31:17,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-28 10:31:17,585 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-09-28 10:31:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:17,586 INFO L225 Difference]: With dead ends: 259 [2018-09-28 10:31:17,586 INFO L226 Difference]: Without dead ends: 245 [2018-09-28 10:31:17,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-09-28 10:31:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-09-28 10:31:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-28 10:31:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-09-28 10:31:17,592 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-09-28 10:31:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:17,593 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-09-28 10:31:17,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-28 10:31:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-09-28 10:31:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-28 10:31:17,593 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:17,593 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:17,594 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:17,594 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-09-28 10:31:17,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:17,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:17,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:17,594 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:17,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:18,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:18,425 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 [2018-09-28 10:31:18,433 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:31:18,839 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-09-28 10:31:18,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:18,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13128 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:19,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:19,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-28 10:31:19,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-28 10:31:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-28 10:31:19,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:19,353 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 117 states. [2018-09-28 10:31:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:21,254 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-09-28 10:31:21,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-28 10:31:21,255 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 244 [2018-09-28 10:31:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:21,255 INFO L225 Difference]: With dead ends: 261 [2018-09-28 10:31:21,255 INFO L226 Difference]: Without dead ends: 247 [2018-09-28 10:31:21,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-28 10:31:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-28 10:31:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-28 10:31:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-09-28 10:31:21,262 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 244 [2018-09-28 10:31:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:21,262 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-09-28 10:31:21,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-28 10:31:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-09-28 10:31:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-28 10:31:21,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:21,263 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:21,263 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:21,263 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1996536584, now seen corresponding path program 114 times [2018-09-28 10:31:21,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:21,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:21,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:21,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:21,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:22,166 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:22,166 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 [2018-09-28 10:31:22,173 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:31:22,591 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 116 check-sat command(s) [2018-09-28 10:31:22,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:22,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13358 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:23,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:23,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-28 10:31:23,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-28 10:31:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-28 10:31:23,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:23,087 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 118 states. [2018-09-28 10:31:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:24,973 INFO L93 Difference]: Finished difference Result 263 states and 267 transitions. [2018-09-28 10:31:24,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-28 10:31:24,973 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 246 [2018-09-28 10:31:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:24,974 INFO L225 Difference]: With dead ends: 263 [2018-09-28 10:31:24,974 INFO L226 Difference]: Without dead ends: 249 [2018-09-28 10:31:24,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-09-28 10:31:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-09-28 10:31:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-28 10:31:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-09-28 10:31:24,980 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 246 [2018-09-28 10:31:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:24,981 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-09-28 10:31:24,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-28 10:31:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-09-28 10:31:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-28 10:31:24,981 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:24,982 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:24,982 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:24,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 428110084, now seen corresponding path program 115 times [2018-09-28 10:31:24,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:24,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:24,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:24,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:24,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:26,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:26,057 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 [2018-09-28 10:31:26,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:26,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13590 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:26,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:26,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-28 10:31:26,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-28 10:31:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-28 10:31:26,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:26,729 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 119 states. [2018-09-28 10:31:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:28,462 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-09-28 10:31:28,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-28 10:31:28,462 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 248 [2018-09-28 10:31:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:28,463 INFO L225 Difference]: With dead ends: 265 [2018-09-28 10:31:28,463 INFO L226 Difference]: Without dead ends: 251 [2018-09-28 10:31:28,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-28 10:31:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-28 10:31:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-28 10:31:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-09-28 10:31:28,471 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 248 [2018-09-28 10:31:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:28,471 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-09-28 10:31:28,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-28 10:31:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-09-28 10:31:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-28 10:31:28,472 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:28,472 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:28,472 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:28,472 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash 703764480, now seen corresponding path program 116 times [2018-09-28 10:31:28,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:28,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:28,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:28,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:28,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:29,324 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:29,324 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:31:29,331 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:31:29,493 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:31:29,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:29,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:30,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:30,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-28 10:31:30,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-28 10:31:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-28 10:31:30,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:30,051 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 120 states. [2018-09-28 10:31:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:31,571 INFO L93 Difference]: Finished difference Result 267 states and 271 transitions. [2018-09-28 10:31:31,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-28 10:31:31,571 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 250 [2018-09-28 10:31:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:31,572 INFO L225 Difference]: With dead ends: 267 [2018-09-28 10:31:31,572 INFO L226 Difference]: Without dead ends: 253 [2018-09-28 10:31:31,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-28 10:31:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-09-28 10:31:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-09-28 10:31:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-09-28 10:31:31,578 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 250 [2018-09-28 10:31:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:31,579 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-09-28 10:31:31,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-28 10:31:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-09-28 10:31:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-28 10:31:31,579 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:31,579 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:31,580 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:31,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash -680333316, now seen corresponding path program 117 times [2018-09-28 10:31:31,580 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:31,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:31,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:31,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:31,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:32,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:32,518 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 [2018-09-28 10:31:32,526 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:31:32,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 119 check-sat command(s) [2018-09-28 10:31:32,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:33,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:33,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:33,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-28 10:31:33,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-28 10:31:33,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-28 10:31:33,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:33,516 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand 121 states. [2018-09-28 10:31:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:35,243 INFO L93 Difference]: Finished difference Result 269 states and 273 transitions. [2018-09-28 10:31:35,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-28 10:31:35,243 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 252 [2018-09-28 10:31:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:35,244 INFO L225 Difference]: With dead ends: 269 [2018-09-28 10:31:35,244 INFO L226 Difference]: Without dead ends: 255 [2018-09-28 10:31:35,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-28 10:31:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-28 10:31:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-28 10:31:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-09-28 10:31:35,251 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 252 [2018-09-28 10:31:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:35,251 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-09-28 10:31:35,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-28 10:31:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-09-28 10:31:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-28 10:31:35,252 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:35,252 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:35,252 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:35,252 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash 641546488, now seen corresponding path program 118 times [2018-09-28 10:31:35,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:35,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:35,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:35,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:35,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:36,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:36,405 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 [2018-09-28 10:31:36,413 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:31:36,579 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:31:36,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:36,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14298 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:37,107 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:37,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-28 10:31:37,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-28 10:31:37,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-28 10:31:37,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:37,110 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 122 states. [2018-09-28 10:31:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:39,370 INFO L93 Difference]: Finished difference Result 271 states and 275 transitions. [2018-09-28 10:31:39,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-28 10:31:39,371 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 254 [2018-09-28 10:31:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:39,371 INFO L225 Difference]: With dead ends: 271 [2018-09-28 10:31:39,371 INFO L226 Difference]: Without dead ends: 257 [2018-09-28 10:31:39,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-09-28 10:31:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-09-28 10:31:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-09-28 10:31:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2018-09-28 10:31:39,379 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 254 [2018-09-28 10:31:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:39,379 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2018-09-28 10:31:39,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-28 10:31:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2018-09-28 10:31:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-28 10:31:39,380 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:39,380 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:39,380 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:39,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash -342281484, now seen corresponding path program 119 times [2018-09-28 10:31:39,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:39,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:39,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:39,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:39,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:40,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:40,332 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 [2018-09-28 10:31:40,339 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:31:40,843 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-09-28 10:31:40,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:40,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14538 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:41,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:41,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-28 10:31:41,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-28 10:31:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-28 10:31:41,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:41,386 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand 123 states. [2018-09-28 10:31:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:43,519 INFO L93 Difference]: Finished difference Result 273 states and 277 transitions. [2018-09-28 10:31:43,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-28 10:31:43,519 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 256 [2018-09-28 10:31:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:43,520 INFO L225 Difference]: With dead ends: 273 [2018-09-28 10:31:43,520 INFO L226 Difference]: Without dead ends: 259 [2018-09-28 10:31:43,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-28 10:31:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-28 10:31:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-28 10:31:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2018-09-28 10:31:43,526 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 256 [2018-09-28 10:31:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:43,526 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 261 transitions. [2018-09-28 10:31:43,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-28 10:31:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 261 transitions. [2018-09-28 10:31:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-28 10:31:43,527 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:43,527 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:43,527 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:43,528 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash -908157456, now seen corresponding path program 120 times [2018-09-28 10:31:43,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:43,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:43,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:43,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:43,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:44,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:44,414 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 [2018-09-28 10:31:44,421 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:31:44,871 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 122 check-sat command(s) [2018-09-28 10:31:44,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:44,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14780 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:45,408 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:45,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-28 10:31:45,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-28 10:31:45,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-28 10:31:45,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:45,411 INFO L87 Difference]: Start difference. First operand 259 states and 261 transitions. Second operand 124 states. [2018-09-28 10:31:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:47,247 INFO L93 Difference]: Finished difference Result 275 states and 279 transitions. [2018-09-28 10:31:47,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-28 10:31:47,247 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 258 [2018-09-28 10:31:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:47,248 INFO L225 Difference]: With dead ends: 275 [2018-09-28 10:31:47,248 INFO L226 Difference]: Without dead ends: 261 [2018-09-28 10:31:47,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-09-28 10:31:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-09-28 10:31:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-09-28 10:31:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2018-09-28 10:31:47,255 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 258 [2018-09-28 10:31:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:47,255 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2018-09-28 10:31:47,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-28 10:31:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2018-09-28 10:31:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-28 10:31:47,256 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:47,256 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:47,256 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:47,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:47,257 INFO L82 PathProgramCache]: Analyzing trace with hash 745880044, now seen corresponding path program 121 times [2018-09-28 10:31:47,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:47,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:47,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:47,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:47,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:48,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:48,266 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:31:48,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:48,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15024 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:48,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:48,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-28 10:31:48,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-28 10:31:48,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-28 10:31:48,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:48,982 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand 125 states. [2018-09-28 10:31:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:50,642 INFO L93 Difference]: Finished difference Result 277 states and 281 transitions. [2018-09-28 10:31:50,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-28 10:31:50,643 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 260 [2018-09-28 10:31:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:50,643 INFO L225 Difference]: With dead ends: 277 [2018-09-28 10:31:50,643 INFO L226 Difference]: Without dead ends: 263 [2018-09-28 10:31:50,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-28 10:31:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-28 10:31:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-28 10:31:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 265 transitions. [2018-09-28 10:31:50,651 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 265 transitions. Word has length 260 [2018-09-28 10:31:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:50,651 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 265 transitions. [2018-09-28 10:31:50,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-28 10:31:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 265 transitions. [2018-09-28 10:31:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-28 10:31:50,652 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:50,652 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:50,652 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:50,653 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1138018024, now seen corresponding path program 122 times [2018-09-28 10:31:50,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:50,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:50,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:50,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:31:50,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:51,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:51,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:31:51,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:31:51,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:31:51,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:51,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15270 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:52,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:52,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-28 10:31:52,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-28 10:31:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-28 10:31:52,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:52,700 INFO L87 Difference]: Start difference. First operand 263 states and 265 transitions. Second operand 126 states. [2018-09-28 10:31:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:54,782 INFO L93 Difference]: Finished difference Result 279 states and 283 transitions. [2018-09-28 10:31:54,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-28 10:31:54,782 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 262 [2018-09-28 10:31:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:54,783 INFO L225 Difference]: With dead ends: 279 [2018-09-28 10:31:54,783 INFO L226 Difference]: Without dead ends: 265 [2018-09-28 10:31:54,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-09-28 10:31:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-09-28 10:31:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-09-28 10:31:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-09-28 10:31:54,791 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 262 [2018-09-28 10:31:54,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:54,791 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-09-28 10:31:54,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-28 10:31:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-09-28 10:31:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-09-28 10:31:54,792 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:54,792 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:54,792 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:54,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash 25494756, now seen corresponding path program 123 times [2018-09-28 10:31:54,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:54,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:54,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:54,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:54,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:31:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:55,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:31:55,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:31:55,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:31:56,278 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 125 check-sat command(s) [2018-09-28 10:31:56,279 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:31:56,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:31:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15518 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:31:56,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:31:56,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-28 10:31:56,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-28 10:31:56,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-28 10:31:56,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:31:56,851 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 127 states. [2018-09-28 10:31:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:31:59,046 INFO L93 Difference]: Finished difference Result 281 states and 285 transitions. [2018-09-28 10:31:59,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-28 10:31:59,046 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 264 [2018-09-28 10:31:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:31:59,047 INFO L225 Difference]: With dead ends: 281 [2018-09-28 10:31:59,047 INFO L226 Difference]: Without dead ends: 267 [2018-09-28 10:31:59,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:31:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-28 10:31:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-28 10:31:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-28 10:31:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 269 transitions. [2018-09-28 10:31:59,053 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 269 transitions. Word has length 264 [2018-09-28 10:31:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:31:59,053 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 269 transitions. [2018-09-28 10:31:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-28 10:31:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 269 transitions. [2018-09-28 10:31:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-28 10:31:59,054 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:31:59,054 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:31:59,055 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:31:59,055 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:31:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash 337490912, now seen corresponding path program 124 times [2018-09-28 10:31:59,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:31:59,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:31:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:59,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:31:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:31:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:32:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:00,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:32:00,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:32:00,050 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:32:00,231 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:32:00,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:32:00,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:32:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15768 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:00,805 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:32:00,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-28 10:32:00,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-28 10:32:00,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-28 10:32:00,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:32:00,809 INFO L87 Difference]: Start difference. First operand 267 states and 269 transitions. Second operand 128 states. [2018-09-28 10:32:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:32:02,676 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-09-28 10:32:02,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-28 10:32:02,676 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 266 [2018-09-28 10:32:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:32:02,677 INFO L225 Difference]: With dead ends: 283 [2018-09-28 10:32:02,677 INFO L226 Difference]: Without dead ends: 269 [2018-09-28 10:32:02,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:32:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-09-28 10:32:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-09-28 10:32:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-28 10:32:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 271 transitions. [2018-09-28 10:32:02,685 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 271 transitions. Word has length 266 [2018-09-28 10:32:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:32:02,685 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 271 transitions. [2018-09-28 10:32:02,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-28 10:32:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 271 transitions. [2018-09-28 10:32:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-28 10:32:02,686 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:32:02,686 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:32:02,687 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:32:02,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:32:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash -481913892, now seen corresponding path program 125 times [2018-09-28 10:32:02,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:32:02,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:32:02,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:02,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:32:02,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:32:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:03,696 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:32:03,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:32:03,708 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:32:04,203 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-09-28 10:32:04,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:32:04,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:32:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:04,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:32:04,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-28 10:32:04,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-28 10:32:04,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-28 10:32:04,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:32:04,760 INFO L87 Difference]: Start difference. First operand 269 states and 271 transitions. Second operand 129 states. [2018-09-28 10:32:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:32:07,039 INFO L93 Difference]: Finished difference Result 285 states and 289 transitions. [2018-09-28 10:32:07,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-28 10:32:07,040 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 268 [2018-09-28 10:32:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:32:07,040 INFO L225 Difference]: With dead ends: 285 [2018-09-28 10:32:07,041 INFO L226 Difference]: Without dead ends: 271 [2018-09-28 10:32:07,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:32:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-28 10:32:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-28 10:32:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-28 10:32:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-09-28 10:32:07,048 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 268 [2018-09-28 10:32:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:32:07,048 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-09-28 10:32:07,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-28 10:32:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-09-28 10:32:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-28 10:32:07,050 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:32:07,050 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:32:07,050 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:32:07,050 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:32:07,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1950915368, now seen corresponding path program 126 times [2018-09-28 10:32:07,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:32:07,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:32:07,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:07,051 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:32:07,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:32:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:08,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:32:08,120 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 [2018-09-28 10:32:08,129 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:32:08,626 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 128 check-sat command(s) [2018-09-28 10:32:08,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:32:08,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:32:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16274 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:09,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:32:09,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-28 10:32:09,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-28 10:32:09,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-28 10:32:09,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:32:09,224 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 130 states. [2018-09-28 10:32:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:32:11,876 INFO L93 Difference]: Finished difference Result 287 states and 291 transitions. [2018-09-28 10:32:11,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-28 10:32:11,877 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 270 [2018-09-28 10:32:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:32:11,877 INFO L225 Difference]: With dead ends: 287 [2018-09-28 10:32:11,877 INFO L226 Difference]: Without dead ends: 273 [2018-09-28 10:32:11,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:32:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-28 10:32:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-09-28 10:32:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-09-28 10:32:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 275 transitions. [2018-09-28 10:32:11,885 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 275 transitions. Word has length 270 [2018-09-28 10:32:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:32:11,885 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 275 transitions. [2018-09-28 10:32:11,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-28 10:32:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 275 transitions. [2018-09-28 10:32:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-28 10:32:11,886 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:32:11,886 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 4, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:32:11,887 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:32:11,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:32:11,887 INFO L82 PathProgramCache]: Analyzing trace with hash -617093420, now seen corresponding path program 127 times [2018-09-28 10:32:11,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:32:11,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:32:11,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:11,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:32:11,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:32:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:32:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16530 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:12,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:32:12,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:32:12,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:32:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:32:13,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:32:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16530 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-28 10:32:13,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:32:13,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-09-28 10:32:13,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-28 10:32:13,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-28 10:32:13,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:32:13,745 INFO L87 Difference]: Start difference. First operand 273 states and 275 transitions. Second operand 131 states. Received shutdown request... [2018-09-28 10:32:14,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-28 10:32:14,596 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-28 10:32:14,601 WARN L206 ceAbstractionStarter]: Timeout [2018-09-28 10:32:14,602 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:32:14 BoogieIcfgContainer [2018-09-28 10:32:14,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:32:14,602 INFO L168 Benchmark]: Toolchain (without parser) took 247044.90 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 262.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 144.1 MB). Peak memory consumption was 406.2 MB. Max. memory is 7.1 GB. [2018-09-28 10:32:14,604 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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. [2018-09-28 10:32:14,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.54 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. [2018-09-28 10:32:14,604 INFO L168 Benchmark]: Boogie Preprocessor took 23.69 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. [2018-09-28 10:32:14,605 INFO L168 Benchmark]: RCFGBuilder took 348.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:32:14,605 INFO L168 Benchmark]: TraceAbstraction took 246622.80 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 262.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 122.9 MB). Peak memory consumption was 385.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:32:14,608 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.54 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 23.69 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 348.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246622.80 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 262.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 122.9 MB). Peak memory consumption was 385.1 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 (273states) and FLOYD_HOARE automaton (currently 83 states, 131 states before enhancement), while ReachableStatesComputation was computing reachable states (161 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 246.5s OverallTime, 131 OverallIterations, 129 TraceHistogramMax, 109.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1172 SDtfs, 31 SDslu, 29400 SDs, 0 SdLazy, 16902 SolverSat, 276 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26946 GetRequests, 18555 SyntacticMatches, 0 SemanticMatches, 8391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 130 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.2s SsaConstructionTime, 22.8s SatisfiabilityAnalysisTime, 101.3s InterpolantComputationTime, 37131 NumberOfCodeBlocks, 37131 NumberOfCodeBlocksAsserted, 4438 NumberOfCheckSat, 36872 ConstructedInterpolants, 0 QuantifiedInterpolants, 19160678 SizeOfPredicates, 128 NumberOfNonLiveVariables, 90841 ConjunctsInSsa, 8512 ConjunctsInUnsatCore, 259 InterpolantComputations, 3 PerfectInterpolantSequences, 4584/1435624 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-0-2018-09-28_10-32-14-617.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-0-2018-09-28_10-32-14-617.csv Completed graceful shutdown