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/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:24:05,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:24:05,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:24:05,269 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:24:05,269 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:24:05,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:24:05,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:24:05,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:24:05,275 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:24:05,276 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:24:05,276 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 14:24:05,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 14:24:05,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:24:05,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:24:05,326 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:24:05,326 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:24:05,327 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:24:05,328 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:24:05,328 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:24:05,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:24:05,328 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:24:05,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:24:05,329 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:24:05,330 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:24:05,330 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:24:05,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:24:05,331 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:24:05,331 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:24:05,331 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:24:05,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:24:05,331 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:24:05,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:24:05,332 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:24:05,332 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:24:05,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:24:05,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:24:05,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:24:05,333 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:24:05,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:24:05,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:24:05,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:24:05,404 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:24:05,404 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:24:05,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 14:24:05,405 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-04 14:24:05,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:24:05,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:24:05,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:24:05,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:24:05,462 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:24:05,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:24:05,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:24:05,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:24:05,504 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:24:05,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... [2018-10-04 14:24:05,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:24:05,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:24:05,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:24:05,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:24:05,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:24:05,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 14:24:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 14:24:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 14:24:05,840 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 14:24:05,841 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:24:05 BoogieIcfgContainer [2018-10-04 14:24:05,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:24:05,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:24:05,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:24:05,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:24:05,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:05" (1/2) ... [2018-10-04 14:24:05,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e327e and model type gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:24:05, skipping insertion in model container [2018-10-04 14:24:05,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:24:05" (2/2) ... [2018-10-04 14:24:05,849 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 14:24:05,863 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:24:05,873 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:24:05,930 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:24:05,931 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:24:05,931 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:24:05,931 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:24:05,931 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:24:05,931 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:24:05,932 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:24:05,932 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:24:05,932 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:24:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 14:24:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 14:24:05,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:05,955 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 14:24:05,956 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:05,969 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 14:24:05,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:05,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:06,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:06,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,055 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:06,056 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:06,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:06,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:06,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:06,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:24:06,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:24:06,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:24:06,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:24:06,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:06,173 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 14:24:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:06,297 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 14:24:06,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:24:06,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 14:24:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:06,311 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:24:06,311 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 14:24:06,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 14:24:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 14:24:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 14:24:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 14:24:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 14:24:06,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 14:24:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:06,354 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 14:24:06,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:24:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 14:24:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:24:06,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:06,364 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:24:06,364 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:06,364 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 14:24:06,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:06,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:06,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:06,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,388 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:06,389 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:06,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:06,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:06,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:06,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:06,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 14:24:06,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:24:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:24:06,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:06,509 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 14:24:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:06,566 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 14:24:06,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:24:06,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 14:24:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:06,567 INFO L225 Difference]: With dead ends: 8 [2018-10-04 14:24:06,567 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 14:24:06,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 2 [2018-10-04 14:24:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 14:24:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 14:24:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 14:24:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 14:24:06,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 14:24:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:06,572 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 14:24:06,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:24:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 14:24:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 14:24:06,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:06,573 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 14:24:06,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:06,573 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:06,574 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 14:24:06,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:06,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:06,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:06,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,583 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:06,583 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:06,583 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:06,597 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:06,619 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:06,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:06,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:06,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:06,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-04 14:24:06,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 14:24:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 14:24:06,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:06,726 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 14:24:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:06,798 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 14:24:06,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:24:06,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 14:24:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:06,800 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:24:06,800 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 14:24:06,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 14:24:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 14:24:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 14:24:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 14:24:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 14:24:06,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 14:24:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:06,804 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 14:24:06,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 14:24:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 14:24:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 14:24:06,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:06,805 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 14:24:06,805 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:06,805 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 14:24:06,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:06,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:06,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:06,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,815 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:06,816 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:06,816 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:06,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:06,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 14:24:06,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:06,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:07,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-04 14:24:07,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:24:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:24:07,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:07,007 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 14:24:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:07,190 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 14:24:07,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:24:07,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 14:24:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:07,192 INFO L225 Difference]: With dead ends: 10 [2018-10-04 14:24:07,192 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 14:24:07,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 14:24:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 14:24:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 14:24:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 14:24:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 14:24:07,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 14:24:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:07,197 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 14:24:07,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:24:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 14:24:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 14:24:07,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:07,198 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 14:24:07,198 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:07,199 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 14:24:07,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:07,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:07,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:07,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,209 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:07,210 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:07,210 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:07,223 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:07,239 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:07,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:07,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:07,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-04 14:24:07,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:24:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:24:07,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:07,390 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 14:24:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:07,455 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:24:07,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:24:07,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 14:24:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:07,456 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:24:07,457 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 14:24:07,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-04 14:24:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 14:24:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 14:24:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:24:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 14:24:07,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 14:24:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:07,464 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 14:24:07,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:24:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 14:24:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:24:07,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:07,465 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 14:24:07,465 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:07,466 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 14:24:07,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:07,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:07,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:07,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,477 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:07,477 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:07,480 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:07,490 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:07,505 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 14:24:07,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:07,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:07,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-04 14:24:07,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:24:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:24:07,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:07,773 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 14:24:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:07,903 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 14:24:07,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:24:07,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 14:24:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:07,904 INFO L225 Difference]: With dead ends: 12 [2018-10-04 14:24:07,904 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 14:24:07,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-04 14:24:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 14:24:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 14:24:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 14:24:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 14:24:07,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 14:24:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:07,909 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 14:24:07,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:24:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 14:24:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 14:24:07,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:07,910 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 14:24:07,910 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:07,910 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 14:24:07,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:07,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:07,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:07,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,921 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:07,921 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:07,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:07,931 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:07,945 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 14:24:07,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:07,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:08,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:08,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-04 14:24:08,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 14:24:08,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 14:24:08,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:08,211 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 14:24:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:08,572 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:24:08,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:24:08,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 14:24:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:08,574 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:24:08,574 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:24:08,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7 [2018-10-04 14:24:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:24:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:24:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:24:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 14:24:08,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 14:24:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:08,579 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 14:24:08,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 14:24:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 14:24:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:24:08,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:08,580 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 14:24:08,580 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:08,581 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 14:24:08,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:08,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,592 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:08,593 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:08,593 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:08,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:08,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:08,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:08,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-04 14:24:08,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:24:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:24:08,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:08,786 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 14:24:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:08,892 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 14:24:08,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:24:08,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 14:24:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:08,894 INFO L225 Difference]: With dead ends: 14 [2018-10-04 14:24:08,894 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 14:24:08,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 14:24:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 14:24:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 14:24:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 14:24:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 14:24:08,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 14:24:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:08,899 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 14:24:08,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:24:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 14:24:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 14:24:08,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:08,899 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 14:24:08,900 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:08,900 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 14:24:08,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:08,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:08,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:08,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,911 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:08,911 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:08,911 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:08,926 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:08,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:08,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:08,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:09,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:09,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-04 14:24:09,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 14:24:09,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 14:24:09,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:09,082 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 14:24:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:09,171 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:24:09,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:24:09,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 14:24:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:09,173 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:24:09,173 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:24:09,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-04 14:24:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:24:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:24:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:24:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 14:24:09,177 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 14:24:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:09,177 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 14:24:09,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 14:24:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 14:24:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:24:09,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:09,178 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 14:24:09,178 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:09,178 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:09,179 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 14:24:09,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:09,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:09,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:09,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:09,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:09,190 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:09,190 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:09,190 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:09,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:09,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 14:24:09,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:09,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:09,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:09,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-04 14:24:09,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:24:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:24:09,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:09,506 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 14:24:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:09,716 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 14:24:09,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:24:09,717 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 14:24:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:09,718 INFO L225 Difference]: With dead ends: 16 [2018-10-04 14:24:09,718 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 14:24:09,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 14:24:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 14:24:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 14:24:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:24:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 14:24:09,723 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 14:24:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:09,724 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 14:24:09,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:24:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 14:24:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 14:24:09,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:09,724 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 14:24:09,725 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:09,725 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 14:24:09,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:09,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:09,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:09,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:09,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:09,738 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:09,738 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:09,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:09,748 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:09,765 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:09,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:09,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:09,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:09,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-04 14:24:09,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:24:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:24:09,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:09,948 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 14:24:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:10,099 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:24:10,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:24:10,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 14:24:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:10,100 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:24:10,101 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 14:24:10,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 11 [2018-10-04 14:24:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 14:24:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 14:24:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 14:24:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 14:24:10,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 14:24:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:10,106 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 14:24:10,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:24:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 14:24:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 14:24:10,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:10,107 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 14:24:10,107 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:10,107 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 14:24:10,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:10,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:10,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:10,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,118 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:10,118 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:10,118 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:10,132 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:10,155 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 14:24:10,155 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:10,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:10,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:10,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-04 14:24:10,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:24:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:24:10,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:10,359 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 14:24:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:10,706 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 14:24:10,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:24:10,707 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 14:24:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:10,708 INFO L225 Difference]: With dead ends: 18 [2018-10-04 14:24:10,708 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 14:24:10,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 12 [2018-10-04 14:24:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 14:24:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 14:24:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 14:24:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 14:24:10,714 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 14:24:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:10,714 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 14:24:10,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:24:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 14:24:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 14:24:10,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:10,715 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 14:24:10,716 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:10,716 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 14:24:10,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:10,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:10,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:10,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,727 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:10,727 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:10,727 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:10,745 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:10,766 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:24:10,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:10,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:11,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:11,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-04 14:24:11,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:24:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:24:11,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:11,014 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 14:24:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:11,271 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:24:11,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:24:11,278 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 14:24:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:11,279 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:24:11,279 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 14:24:11,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 14:24:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 14:24:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 14:24:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 14:24:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 14:24:11,285 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 14:24:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:11,286 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 14:24:11,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:24:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 14:24:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 14:24:11,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:11,287 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 14:24:11,288 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:11,288 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 14:24:11,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:11,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:11,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:11,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,313 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:11,314 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:11,314 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:11,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:11,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:11,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:11,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-04 14:24:11,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:24:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:24:11,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:11,763 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 14:24:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:11,957 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 14:24:11,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:24:11,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 14:24:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:11,958 INFO L225 Difference]: With dead ends: 20 [2018-10-04 14:24:11,958 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 14:24:11,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 14 [2018-10-04 14:24:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 14:24:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 14:24:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 14:24:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 14:24:11,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 14:24:11,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:11,963 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 14:24:11,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:24:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 14:24:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 14:24:11,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:11,964 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 14:24:11,964 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:11,964 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 14:24:11,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:11,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:11,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:11,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,975 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:11,976 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:11,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:11,993 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:12,016 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:12,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:12,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:12,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:12,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-04 14:24:12,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 14:24:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 14:24:12,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:12,333 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 14:24:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:12,542 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:24:12,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:24:12,543 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 14:24:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:12,544 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:24:12,544 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:24:12,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-04 14:24:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:24:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 14:24:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:24:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 14:24:12,549 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 14:24:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:12,549 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 14:24:12,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 14:24:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 14:24:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:24:12,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:12,550 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 14:24:12,551 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:12,551 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:12,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 14:24:12,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:12,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:12,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:12,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:12,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:12,563 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:12,563 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:12,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:12,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:12,636 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 14:24:12,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:12,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:14,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:14,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-04 14:24:14,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:24:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:24:14,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:14,045 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 14:24:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:14,470 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 14:24:14,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:24:14,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 14:24:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:14,471 INFO L225 Difference]: With dead ends: 22 [2018-10-04 14:24:14,471 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 14:24:14,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 16 [2018-10-04 14:24:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 14:24:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 14:24:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 14:24:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 14:24:14,476 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 14:24:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:14,476 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 14:24:14,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:24:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 14:24:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 14:24:14,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:14,477 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 14:24:14,477 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:14,477 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 14:24:14,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:14,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:14,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:14,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:14,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:14,491 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:14,492 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:14,492 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:14,506 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:14,530 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:14,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:14,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:15,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:15,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-04 14:24:15,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:24:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:24:15,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:15,056 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 14:24:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:15,348 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:24:15,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:24:15,349 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 14:24:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:15,350 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:24:15,350 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 14:24:15,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 17 [2018-10-04 14:24:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 14:24:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 14:24:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 14:24:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 14:24:15,354 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 14:24:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:15,355 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 14:24:15,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:24:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 14:24:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 14:24:15,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:15,356 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 14:24:15,356 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:15,356 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-04 14:24:15,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:15,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:15,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:15,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:15,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:15,367 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:15,367 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:15,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:15,383 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:15,416 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 14:24:15,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:15,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:15,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:15,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-04 14:24:15,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:24:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:24:15,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:15,909 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 14:24:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:16,404 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 14:24:16,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:24:16,405 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 14:24:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:16,406 INFO L225 Difference]: With dead ends: 24 [2018-10-04 14:24:16,406 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 14:24:16,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 18 [2018-10-04 14:24:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 14:24:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 14:24:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 14:24:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 14:24:16,411 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 14:24:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:16,412 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 14:24:16,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:24:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 14:24:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 14:24:16,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:16,413 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 14:24:16,413 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:16,413 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-04 14:24:16,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:16,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:16,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:16,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:16,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:16,424 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:16,424 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:16,424 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:16,444 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:16,488 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 14:24:16,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:16,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:16,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:16,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-04 14:24:16,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:24:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:24:16,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:16,979 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 14:24:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:17,302 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:24:17,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:24:17,303 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 14:24:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:17,304 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:24:17,304 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:24:17,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 19 [2018-10-04 14:24:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:24:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 14:24:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 14:24:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 14:24:17,311 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 14:24:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:17,311 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 14:24:17,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:24:17,311 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 14:24:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 14:24:17,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:17,312 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 14:24:17,312 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:17,313 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:17,313 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-04 14:24:17,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:17,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:17,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:17,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:17,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:17,322 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:17,323 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:17,323 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 (exit command is (exit), workingDir is null) [2018-10-04 14:24:17,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:17,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:17,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:17,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-04 14:24:17,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:24:17,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:24:17,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:17,708 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 14:24:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:18,064 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 14:24:18,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:24:18,064 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 14:24:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:18,065 INFO L225 Difference]: With dead ends: 26 [2018-10-04 14:24:18,066 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 14:24:18,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.2s impTime 20 [2018-10-04 14:24:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 14:24:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 14:24:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 14:24:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 14:24:18,072 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 14:24:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:18,072 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 14:24:18,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:24:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 14:24:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 14:24:18,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:18,073 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 14:24:18,073 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:18,074 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-04 14:24:18,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:18,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:18,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:18,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:18,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:18,084 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:18,084 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:18,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:18,108 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:18,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:18,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:18,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:18,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:18,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-04 14:24:18,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:24:18,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:24:18,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:18,538 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 14:24:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:19,057 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:24:19,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:24:19,057 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 14:24:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:19,058 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:24:19,058 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 14:24:19,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 21 [2018-10-04 14:24:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 14:24:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 14:24:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:24:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 14:24:19,064 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 14:24:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:19,064 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 14:24:19,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:24:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 14:24:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:24:19,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:19,065 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 14:24:19,065 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:19,065 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:19,066 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-04 14:24:19,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:19,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:19,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:19,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:19,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:19,074 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:19,074 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:19,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:19,082 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:19,207 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 14:24:19,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:19,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:19,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:19,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-04 14:24:19,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:24:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:24:19,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:19,693 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 14:24:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:20,230 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 14:24:20,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:24:20,233 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 14:24:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:20,233 INFO L225 Difference]: With dead ends: 28 [2018-10-04 14:24:20,233 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 14:24:20,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 22 [2018-10-04 14:24:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 14:24:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 14:24:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 14:24:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 14:24:20,238 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 14:24:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:20,238 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 14:24:20,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:24:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 14:24:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 14:24:20,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:20,239 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 14:24:20,239 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:20,239 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:20,240 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-04 14:24:20,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:20,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:20,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:20,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:20,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:20,248 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:20,248 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:20,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:20,274 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:20,316 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:20,316 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:20,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:20,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:20,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-04 14:24:20,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 14:24:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 14:24:20,765 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:20,765 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 14:24:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:21,440 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:24:21,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:24:21,440 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 14:24:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:21,441 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:24:21,441 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 14:24:21,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 23 [2018-10-04 14:24:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 14:24:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 14:24:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 14:24:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 14:24:21,446 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 14:24:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:21,447 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 14:24:21,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 14:24:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 14:24:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 14:24:21,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:21,448 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 14:24:21,448 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:21,448 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-04 14:24:21,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:21,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:21,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:21,457 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:21,457 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:21,457 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-04 14:24:21,474 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:21,518 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 14:24:21,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:21,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:22,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:22,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-04 14:24:22,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:24:22,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:24:22,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:22,127 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 14:24:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:22,685 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 14:24:22,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:24:22,685 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 14:24:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:22,686 INFO L225 Difference]: With dead ends: 30 [2018-10-04 14:24:22,686 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 14:24:22,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 24 [2018-10-04 14:24:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 14:24:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 14:24:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 14:24:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 14:24:22,692 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 14:24:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:22,692 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 14:24:22,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:24:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 14:24:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 14:24:22,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:22,693 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 14:24:22,693 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:22,693 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-04 14:24:22,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:22,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:22,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:22,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:22,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:22,701 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:22,702 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:22,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:22,716 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:22,777 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:24:22,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:22,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:23,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:23,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-04 14:24:23,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 14:24:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 14:24:23,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:23,256 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 14:24:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:23,769 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:24:23,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:24:23,769 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 14:24:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:23,770 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:24:23,770 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 14:24:23,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 25 [2018-10-04 14:24:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 14:24:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 14:24:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:24:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 14:24:23,776 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 14:24:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:23,776 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 14:24:23,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 14:24:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 14:24:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:24:23,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:23,777 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 14:24:23,778 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:23,778 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-04 14:24:23,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:23,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:23,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:23,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:23,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:23,786 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:23,786 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:23,786 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:23,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:23,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:24,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:24,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-04 14:24:24,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:24:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:24:24,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:24,364 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 14:24:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:25,022 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 14:24:25,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:24:25,022 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 14:24:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:25,023 INFO L225 Difference]: With dead ends: 32 [2018-10-04 14:24:25,023 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 14:24:25,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.4s impTime 26 [2018-10-04 14:24:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 14:24:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 14:24:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 14:24:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 14:24:25,028 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 14:24:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:25,028 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 14:24:25,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:24:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 14:24:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 14:24:25,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:25,029 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 14:24:25,029 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:25,030 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-04 14:24:25,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:25,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:25,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:25,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:25,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:25,037 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:25,037 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:25,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:25,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:25,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:25,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:25,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:25,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:25,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-04 14:24:25,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 14:24:25,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 14:24:25,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:25,662 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 14:24:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:26,271 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:24:26,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:24:26,272 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 14:24:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:26,272 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:24:26,272 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 14:24:26,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 27 [2018-10-04 14:24:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 14:24:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 14:24:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 14:24:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 14:24:26,278 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 14:24:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:26,278 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 14:24:26,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 14:24:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 14:24:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 14:24:26,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:26,279 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 14:24:26,279 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:26,279 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:26,279 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-04 14:24:26,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:26,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:26,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:26,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:26,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:26,287 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:26,288 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:26,288 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 (exit command is (exit), workingDir is null) [2018-10-04 14:24:26,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:26,656 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 14:24:26,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:26,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:27,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:27,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-04 14:24:27,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:24:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:24:27,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:27,217 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 14:24:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:27,797 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 14:24:27,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:24:27,798 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 14:24:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:27,798 INFO L225 Difference]: With dead ends: 34 [2018-10-04 14:24:27,799 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 14:24:27,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 28 [2018-10-04 14:24:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 14:24:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 14:24:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 14:24:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 14:24:27,804 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 14:24:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:27,805 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 14:24:27,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:24:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 14:24:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 14:24:27,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:27,806 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 14:24:27,806 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:27,806 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:27,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-04 14:24:27,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:27,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:27,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:27,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:27,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:27,815 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:27,815 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:27,815 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:27,829 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:27,875 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:27,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:27,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:28,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:28,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-04 14:24:28,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 14:24:28,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 14:24:28,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:28,473 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 14:24:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:29,104 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:24:29,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:24:29,105 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 14:24:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:29,106 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:24:29,106 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:24:29,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 29 [2018-10-04 14:24:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:24:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 14:24:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 14:24:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 14:24:29,111 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 14:24:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:29,111 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 14:24:29,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 14:24:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 14:24:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 14:24:29,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:29,112 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 14:24:29,112 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:29,113 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-04 14:24:29,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:29,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:29,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:29,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:29,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:29,121 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:29,121 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:29,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-04 14:24:29,136 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:29,191 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 14:24:29,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:29,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:29,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:29,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-04 14:24:29,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:24:29,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:24:29,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:29,861 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 14:24:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:30,659 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 14:24:30,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:24:30,660 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 14:24:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:30,661 INFO L225 Difference]: With dead ends: 36 [2018-10-04 14:24:30,661 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 14:24:30,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 30 [2018-10-04 14:24:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 14:24:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 14:24:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 14:24:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 14:24:30,665 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 14:24:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:30,665 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 14:24:30,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:24:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 14:24:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 14:24:30,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:30,666 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 14:24:30,666 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:30,666 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-04 14:24:30,666 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:30,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:30,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:30,667 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:30,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:30,674 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:30,674 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:30,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:30,697 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:30,888 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 14:24:30,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:30,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:32,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:32,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-04 14:24:32,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 14:24:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 14:24:32,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:32,347 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 14:24:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:33,077 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:24:33,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:24:33,078 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 14:24:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:33,079 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:24:33,079 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 14:24:33,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 31 [2018-10-04 14:24:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 14:24:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 14:24:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 14:24:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 14:24:33,084 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 14:24:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:33,085 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 14:24:33,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 14:24:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 14:24:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 14:24:33,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:33,085 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 14:24:33,086 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:33,086 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-04 14:24:33,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:33,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:33,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:33,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:33,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:33,094 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:33,094 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:33,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:33,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:33,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:34,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:34,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-04 14:24:34,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:24:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:24:34,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:34,079 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 14:24:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:34,801 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 14:24:34,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:24:34,802 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 14:24:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:34,802 INFO L225 Difference]: With dead ends: 38 [2018-10-04 14:24:34,802 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 14:24:34,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 32 [2018-10-04 14:24:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 14:24:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 14:24:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 14:24:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 14:24:34,808 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 14:24:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:34,808 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 14:24:34,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:24:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 14:24:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 14:24:34,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:34,809 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 14:24:34,809 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:34,809 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:34,810 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-04 14:24:34,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:34,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:34,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:34,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:34,817 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:34,817 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:34,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:34,833 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:34,893 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:34,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:34,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:35,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:35,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-04 14:24:35,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 14:24:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 14:24:35,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:35,785 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 14:24:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:36,536 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:24:36,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:24:36,536 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 14:24:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:36,537 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:24:36,537 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 14:24:36,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 33 [2018-10-04 14:24:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 14:24:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 14:24:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 14:24:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 14:24:36,542 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 14:24:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:36,543 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 14:24:36,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 14:24:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 14:24:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 14:24:36,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:36,543 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 14:24:36,544 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:36,544 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:36,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-04 14:24:36,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:36,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:36,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:36,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:36,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:36,549 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:36,549 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:36,550 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:36,556 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:37,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 14:24:37,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:37,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:37,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:37,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-04 14:24:37,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:24:37,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:24:37,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:37,941 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 14:24:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:38,803 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 14:24:38,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:24:38,804 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 14:24:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:38,804 INFO L225 Difference]: With dead ends: 40 [2018-10-04 14:24:38,804 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 14:24:38,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.6s impTime 34 [2018-10-04 14:24:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 14:24:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 14:24:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 14:24:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 14:24:38,808 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 14:24:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:38,808 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 14:24:38,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:24:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 14:24:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 14:24:38,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:38,809 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 14:24:38,809 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:38,809 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-04 14:24:38,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:38,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:38,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:38,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:38,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:38,816 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:38,816 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:38,816 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:38,831 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:38,901 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:38,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:38,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:40,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:40,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-04 14:24:40,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 14:24:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 14:24:40,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:40,428 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 14:24:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:41,353 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:24:41,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:24:41,354 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 14:24:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:41,354 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:24:41,355 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 14:24:41,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 35 [2018-10-04 14:24:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 14:24:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 14:24:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:24:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 14:24:41,361 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 14:24:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:41,361 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 14:24:41,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 14:24:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 14:24:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:24:41,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:41,362 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 14:24:41,362 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:41,363 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-04 14:24:41,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:41,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:41,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:41,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:41,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:41,376 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:41,376 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:41,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:41,394 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:41,467 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 14:24:41,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:41,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:42,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:42,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-04 14:24:42,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:24:42,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:24:42,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:42,497 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 14:24:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:43,465 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 14:24:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:24:43,466 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 14:24:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:43,467 INFO L225 Difference]: With dead ends: 42 [2018-10-04 14:24:43,467 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 14:24:43,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 36 [2018-10-04 14:24:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 14:24:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 14:24:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 14:24:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 14:24:43,470 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 14:24:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:43,470 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 14:24:43,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:24:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 14:24:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 14:24:43,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:43,471 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 14:24:43,471 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:43,471 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:43,471 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-04 14:24:43,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:43,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:43,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:43,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:43,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:43,477 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:43,478 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:43,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:43,494 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:43,703 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:24:43,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:43,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:44,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:44,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-04 14:24:44,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 14:24:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 14:24:44,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:44,618 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 14:24:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:45,783 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:24:45,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:24:45,784 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 14:24:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:45,784 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:24:45,784 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 14:24:45,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 37 [2018-10-04 14:24:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 14:24:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 14:24:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:24:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 14:24:45,788 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 14:24:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:45,789 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 14:24:45,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 14:24:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 14:24:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:24:45,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:45,790 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 14:24:45,790 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:45,790 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-04 14:24:45,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:45,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:45,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:45,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:45,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:45,797 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:45,797 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:45,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:45,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:45,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:46,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:46,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-04 14:24:46,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:24:46,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:24:46,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:46,828 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 14:24:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:47,895 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 14:24:47,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:24:47,895 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 14:24:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:47,896 INFO L225 Difference]: With dead ends: 44 [2018-10-04 14:24:47,896 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 14:24:47,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 38 [2018-10-04 14:24:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 14:24:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 14:24:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 14:24:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 14:24:47,900 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 14:24:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:47,900 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 14:24:47,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:24:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 14:24:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 14:24:47,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:47,901 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 14:24:47,901 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:47,901 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:47,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-04 14:24:47,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:47,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:47,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:47,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:47,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:47,909 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:47,909 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:47,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:47,924 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:48,005 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:48,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:48,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:49,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:49,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-04 14:24:49,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 14:24:49,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 14:24:49,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:49,928 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 14:24:51,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:51,335 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:24:51,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:24:51,335 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 14:24:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:51,336 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:24:51,336 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:24:51,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 39 [2018-10-04 14:24:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:24:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 14:24:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 14:24:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 14:24:51,341 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 14:24:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:51,341 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 14:24:51,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 14:24:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 14:24:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 14:24:51,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:51,341 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 14:24:51,342 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:51,342 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:51,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-04 14:24:51,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:51,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:51,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:51,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:51,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:51,348 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:51,348 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:51,348 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:51,368 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:52,781 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 14:24:52,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:52,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:53,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:53,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-04 14:24:53,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:24:53,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:24:53,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:53,816 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 14:24:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:55,042 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 14:24:55,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:24:55,042 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 14:24:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:55,043 INFO L225 Difference]: With dead ends: 46 [2018-10-04 14:24:55,043 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 14:24:55,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.9s impTime 40 [2018-10-04 14:24:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 14:24:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 14:24:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 14:24:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 14:24:55,047 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 14:24:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:55,047 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 14:24:55,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:24:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 14:24:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 14:24:55,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:55,048 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 14:24:55,048 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:55,048 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-04 14:24:55,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:55,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:55,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:55,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,055 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:55,056 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:55,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-04 14:24:55,072 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:55,166 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:55,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:55,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:56,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-04 14:24:56,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 14:24:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 14:24:56,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:56,688 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 14:24:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:57,961 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:24:57,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:24:57,962 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 14:24:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:57,962 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:24:57,963 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 14:24:57,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 41 [2018-10-04 14:24:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 14:24:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 14:24:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 14:24:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 14:24:57,967 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 14:24:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:57,967 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 14:24:57,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 14:24:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 14:24:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 14:24:57,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:57,968 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 14:24:57,968 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:57,968 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-04 14:24:57,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:57,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:57,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:57,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,974 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:24:57,974 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:24:57,975 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:24:57,982 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:58,074 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 14:24:58,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:58,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:24:59,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-04 14:24:59,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:24:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:24:59,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:59,281 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 14:25:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:00,651 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 14:25:00,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:25:00,651 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 14:25:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:00,651 INFO L225 Difference]: With dead ends: 48 [2018-10-04 14:25:00,652 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 14:25:00,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 1.0s impTime 42 [2018-10-04 14:25:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 14:25:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 14:25:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 14:25:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 14:25:00,656 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 14:25:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:00,656 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 14:25:00,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:25:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 14:25:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 14:25:00,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:00,657 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 14:25:00,657 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:00,657 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-04 14:25:00,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:00,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:00,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:00,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,664 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:00,664 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:00,665 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:00,672 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:01,165 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 14:25:01,165 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:01,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:02,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-04 14:25:02,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 14:25:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 14:25:02,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:02,974 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 14:25:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:04,383 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:25:04,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:25:04,384 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 14:25:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:04,384 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:25:04,385 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:25:04,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime 43 [2018-10-04 14:25:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:25:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:25:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:25:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 14:25:04,390 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 14:25:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:04,390 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 14:25:04,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 14:25:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 14:25:04,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:25:04,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:04,390 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 14:25:04,391 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:04,391 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-04 14:25:04,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:04,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:04,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:04,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:04,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:04,397 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:04,398 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:04,398 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:04,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:04,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:05,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:05,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-04 14:25:05,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:25:05,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:25:05,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:05,997 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 14:25:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:07,487 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 14:25:07,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:25:07,487 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 14:25:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:07,488 INFO L225 Difference]: With dead ends: 50 [2018-10-04 14:25:07,488 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 14:25:07,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.3s impTime 44 [2018-10-04 14:25:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 14:25:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 14:25:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 14:25:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 14:25:07,492 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 14:25:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:07,492 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 14:25:07,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:25:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 14:25:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 14:25:07,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:07,493 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 14:25:07,493 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:07,493 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:07,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-04 14:25:07,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:07,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:07,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:07,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,501 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:07,501 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:07,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:07,515 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:07,596 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:07,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:07,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:08,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:08,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-04 14:25:08,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 14:25:08,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 14:25:08,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:08,893 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 14:25:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:10,401 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:25:10,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:25:10,402 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 14:25:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:10,403 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:25:10,403 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 14:25:10,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.1s impTime 45 [2018-10-04 14:25:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 14:25:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 14:25:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:25:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 14:25:10,408 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 14:25:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:10,408 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 14:25:10,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 14:25:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 14:25:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:25:10,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:10,409 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 14:25:10,409 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:10,409 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-04 14:25:10,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:10,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:10,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:10,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:10,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:10,417 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:10,417 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:10,417 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:10,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:13,005 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 14:25:13,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:13,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:14,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:14,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-04 14:25:14,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:25:14,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:25:14,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:14,382 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 14:25:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:16,045 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 14:25:16,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:25:16,045 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 14:25:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:16,046 INFO L225 Difference]: With dead ends: 52 [2018-10-04 14:25:16,046 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 14:25:16,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.2s impTime 46 [2018-10-04 14:25:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 14:25:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 14:25:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 14:25:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 14:25:16,052 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 14:25:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:16,052 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 14:25:16,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:25:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 14:25:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 14:25:16,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:16,053 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 14:25:16,053 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:16,053 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-04 14:25:16,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:16,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:16,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:16,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:16,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:16,060 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:16,061 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:16,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:16,071 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:16,159 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:16,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:16,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:17,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:17,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-04 14:25:17,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 14:25:17,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 14:25:17,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:17,632 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 14:25:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:19,266 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:25:19,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:25:19,267 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 14:25:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:19,268 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:25:19,268 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:25:19,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 47 [2018-10-04 14:25:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:25:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 14:25:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 14:25:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 14:25:19,272 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 14:25:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:19,273 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 14:25:19,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 14:25:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 14:25:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 14:25:19,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:19,273 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 14:25:19,274 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:19,274 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-04 14:25:19,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:19,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:19,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:19,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:19,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:19,281 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:19,281 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:19,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:19,297 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:19,414 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 14:25:19,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:19,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:20,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:20,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-04 14:25:20,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:25:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:25:20,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:20,864 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 14:25:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:22,873 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 14:25:22,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:25:22,873 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 14:25:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:22,874 INFO L225 Difference]: With dead ends: 54 [2018-10-04 14:25:22,874 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 14:25:22,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 48 [2018-10-04 14:25:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 14:25:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 14:25:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 14:25:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 14:25:22,878 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 14:25:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:22,879 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 14:25:22,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:25:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 14:25:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 14:25:22,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:22,879 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 14:25:22,879 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:22,880 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-04 14:25:22,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:22,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:22,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:22,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,887 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:22,887 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:22,887 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:22,896 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:23,577 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:25:23,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:23,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:25,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:25,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-04 14:25:25,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 14:25:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 14:25:25,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:25,117 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 14:25:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:26,971 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:25:26,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:25:26,972 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 14:25:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:26,973 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:25:26,973 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:25:26,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.3s impTime 49 [2018-10-04 14:25:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:25:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:25:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:25:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 14:25:26,978 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 14:25:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:26,978 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 14:25:26,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 14:25:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 14:25:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:25:26,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:26,979 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 14:25:26,979 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:26,979 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:26,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-04 14:25:26,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:26,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:26,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:26,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:26,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:26,986 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:26,986 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:26,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:26,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:27,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:28,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:28,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-04 14:25:28,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:25:28,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:25:28,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:28,686 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 14:25:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:30,514 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 14:25:30,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:25:30,515 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 14:25:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:30,515 INFO L225 Difference]: With dead ends: 56 [2018-10-04 14:25:30,515 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 14:25:30,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 50 [2018-10-04 14:25:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 14:25:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 14:25:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 14:25:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 14:25:30,521 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 14:25:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:30,521 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 14:25:30,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:25:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 14:25:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 14:25:30,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:30,522 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 14:25:30,522 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:30,523 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:30,523 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-04 14:25:30,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:30,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:30,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:30,531 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:30,531 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:30,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:30,546 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:30,678 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:30,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:30,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:32,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:32,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-04 14:25:32,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 14:25:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 14:25:32,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:32,682 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 14:25:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:34,603 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:25:34,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:25:34,603 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 14:25:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:34,605 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:25:34,605 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 14:25:34,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.7s impTime 51 [2018-10-04 14:25:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 14:25:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 14:25:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 14:25:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 14:25:34,609 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 14:25:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:34,609 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 14:25:34,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 14:25:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 14:25:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 14:25:34,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:34,610 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 14:25:34,610 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:34,610 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:34,610 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-04 14:25:34,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:34,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:34,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:34,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:34,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:34,618 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:34,618 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:34,618 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:34,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:39,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 14:25:39,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:39,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:40,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:40,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-04 14:25:40,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:25:40,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:25:40,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:40,720 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 14:25:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:42,809 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 14:25:42,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:25:42,810 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 14:25:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:42,811 INFO L225 Difference]: With dead ends: 58 [2018-10-04 14:25:42,811 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 14:25:42,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.5s impTime 52 [2018-10-04 14:25:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 14:25:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 14:25:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 14:25:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 14:25:42,816 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 14:25:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:42,816 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 14:25:42,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:25:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 14:25:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 14:25:42,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:42,816 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 14:25:42,817 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:42,817 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-04 14:25:42,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:42,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:42,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:42,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:42,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:42,824 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:42,825 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:42,825 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 (exit command is (exit), workingDir is null) [2018-10-04 14:25:42,839 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:42,965 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:42,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:42,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:44,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:44,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-04 14:25:44,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 14:25:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 14:25:44,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:44,725 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 14:25:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:46,865 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:25:46,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:25:46,865 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 14:25:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:46,866 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:25:46,866 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 14:25:46,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.6s impTime 53 [2018-10-04 14:25:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 14:25:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 14:25:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 14:25:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 14:25:46,871 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 14:25:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:46,871 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 14:25:46,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 14:25:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 14:25:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 14:25:46,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:46,872 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 14:25:46,872 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:46,872 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-04 14:25:46,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:46,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:46,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:46,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:46,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:46,879 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:46,880 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:46,880 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:46,892 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:47,048 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 14:25:47,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:47,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:48,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:48,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-04 14:25:48,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:25:48,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:25:48,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:48,937 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 14:25:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:51,033 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 14:25:51,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:25:51,034 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 14:25:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:51,035 INFO L225 Difference]: With dead ends: 60 [2018-10-04 14:25:51,035 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 14:25:51,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 54 [2018-10-04 14:25:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 14:25:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 14:25:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 14:25:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 14:25:51,039 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 14:25:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:51,039 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 14:25:51,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:25:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 14:25:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 14:25:51,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:51,039 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 14:25:51,040 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:51,040 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-04 14:25:51,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:51,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:51,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:51,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:51,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:51,047 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:51,047 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:51,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:51,059 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:52,414 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 14:25:52,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:52,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:54,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:54,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-04 14:25:54,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 14:25:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 14:25:54,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:54,305 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 14:25:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:56,496 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:25:56,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:25:56,497 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 14:25:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:56,498 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:25:56,498 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 14:25:56,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.7s impTime 55 [2018-10-04 14:25:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 14:25:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 14:25:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:25:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 14:25:56,502 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 14:25:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:56,502 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 14:25:56,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 14:25:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 14:25:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:25:56,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:56,503 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 14:25:56,503 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:56,503 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:56,503 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-04 14:25:56,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:56,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:56,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:56,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:56,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:56,511 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:25:56,511 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:25:56,511 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:25:56,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:56,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:58,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:25:58,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-04 14:25:58,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:25:58,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:25:58,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:58,829 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 14:26:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:01,184 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 14:26:01,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:26:01,185 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 14:26:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:01,185 INFO L225 Difference]: With dead ends: 62 [2018-10-04 14:26:01,185 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 14:26:01,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 56 [2018-10-04 14:26:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 14:26:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 14:26:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 14:26:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 14:26:01,190 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 14:26:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:01,190 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 14:26:01,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:26:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 14:26:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 14:26:01,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:01,191 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 14:26:01,191 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:01,191 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-04 14:26:01,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:01,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:01,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:01,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:01,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:01,199 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:01,199 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:01,199 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:01,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:01,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:01,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:01,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:03,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:03,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-04 14:26:03,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 14:26:03,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 14:26:03,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:03,553 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 14:26:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:05,901 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:26:05,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:26:05,902 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 14:26:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:05,903 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:26:05,903 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 14:26:05,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 57 [2018-10-04 14:26:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 14:26:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 14:26:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 14:26:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 14:26:05,908 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 14:26:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:05,909 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 14:26:05,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 14:26:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 14:26:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 14:26:05,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:05,909 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 14:26:05,909 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:05,910 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:05,910 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-04 14:26:05,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:05,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:05,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:05,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:05,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:05,918 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:05,918 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:05,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:05,935 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:13,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 14:26:13,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:13,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:15,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:15,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-04 14:26:15,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:26:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:26:15,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:15,613 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 14:26:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:18,191 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 14:26:18,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:26:18,191 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 14:26:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:18,192 INFO L225 Difference]: With dead ends: 64 [2018-10-04 14:26:18,192 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 14:26:18,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.8s impTime 58 [2018-10-04 14:26:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 14:26:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 14:26:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 14:26:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 14:26:18,197 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 14:26:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:18,197 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 14:26:18,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:26:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 14:26:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 14:26:18,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:18,197 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 14:26:18,198 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:18,198 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:18,198 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-04 14:26:18,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:18,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:18,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:18,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:18,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:18,205 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:18,205 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:18,205 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:18,218 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:18,355 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:18,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:18,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:20,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:20,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-04 14:26:20,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 14:26:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 14:26:20,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:20,519 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 14:26:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:23,194 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:26:23,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:26:23,195 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 14:26:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:23,196 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:26:23,196 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:26:23,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 59 [2018-10-04 14:26:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:26:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 14:26:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 14:26:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 14:26:23,201 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 14:26:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:23,201 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 14:26:23,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 14:26:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 14:26:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 14:26:23,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:23,202 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 14:26:23,202 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:23,203 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-04 14:26:23,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:23,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:23,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:23,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:23,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:23,210 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:23,210 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:23,211 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:23,227 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:23,435 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 14:26:23,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:23,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:26,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:26,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-04 14:26:26,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:26:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:26:26,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:26,403 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 14:26:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:29,135 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 14:26:29,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:26:29,136 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 14:26:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:29,137 INFO L225 Difference]: With dead ends: 66 [2018-10-04 14:26:29,137 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 14:26:29,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 60 [2018-10-04 14:26:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 14:26:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 14:26:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 14:26:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 14:26:29,140 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 14:26:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:29,141 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 14:26:29,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:26:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 14:26:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 14:26:29,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:29,142 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 14:26:29,142 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:29,142 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-04 14:26:29,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:29,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:29,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:29,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:29,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:29,149 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:29,149 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:29,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:29,157 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:31,015 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:26:31,015 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:31,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:33,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:33,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-04 14:26:33,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 14:26:33,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 14:26:33,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:33,521 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 14:26:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:36,187 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:26:36,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:26:36,188 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 14:26:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:36,189 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:26:36,189 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 14:26:36,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.3s impTime 61 [2018-10-04 14:26:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 14:26:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 14:26:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 14:26:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 14:26:36,193 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 14:26:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:36,193 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 14:26:36,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 14:26:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 14:26:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 14:26:36,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:36,194 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 14:26:36,194 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:36,194 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-04 14:26:36,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:36,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:36,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:36,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:36,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:36,200 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:36,200 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:36,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:36,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:36,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:38,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:38,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-04 14:26:38,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:26:38,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:26:38,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:38,947 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 14:26:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:41,740 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 14:26:41,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:26:41,740 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 14:26:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:41,741 INFO L225 Difference]: With dead ends: 68 [2018-10-04 14:26:41,741 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 14:26:41,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime 62 [2018-10-04 14:26:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 14:26:41,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 14:26:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 14:26:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 14:26:41,744 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 14:26:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:41,744 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 14:26:41,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:26:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 14:26:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 14:26:41,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:41,745 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 14:26:41,745 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:41,745 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-04 14:26:41,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:41,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:41,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:41,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:41,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:41,752 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:41,752 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:41,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:41,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:41,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:41,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:41,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:44,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:26:44,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-04 14:26:44,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 14:26:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 14:26:44,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:44,541 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 14:26:47,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:47,400 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:26:47,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:26:47,400 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 14:26:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:47,401 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:26:47,401 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 14:26:47,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.4s impTime 63 [2018-10-04 14:26:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 14:26:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 14:26:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 14:26:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 14:26:47,406 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 14:26:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:47,407 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 14:26:47,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 14:26:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 14:26:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 14:26:47,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:47,407 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 14:26:47,407 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:47,408 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-04 14:26:47,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:47,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:47,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:47,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:47,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:47,416 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:26:47,416 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:26:47,417 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:26:47,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:27:00,075 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 14:27:00,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:00,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:02,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:02,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-04 14:27:02,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:27:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:27:02,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:02,584 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 14:27:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:05,635 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 14:27:05,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:27:05,636 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 14:27:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:05,637 INFO L225 Difference]: With dead ends: 70 [2018-10-04 14:27:05,637 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 14:27:05,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.3s impTime 64 [2018-10-04 14:27:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 14:27:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 14:27:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 14:27:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 14:27:05,642 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 14:27:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:05,643 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 14:27:05,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:27:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 14:27:05,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 14:27:05,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:05,644 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 14:27:05,644 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:05,644 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:05,644 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-04 14:27:05,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:05,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:05,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:05,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:05,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:05,651 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:05,652 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:05,652 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:27:05,664 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:27:05,883 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:05,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:05,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:08,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:08,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-04 14:27:08,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 14:27:08,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 14:27:08,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:08,781 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 14:27:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:11,868 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:27:11,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:27:11,869 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 14:27:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:11,869 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:27:11,870 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 14:27:11,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.6s impTime 65 [2018-10-04 14:27:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 14:27:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 14:27:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:27:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 14:27:11,874 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 14:27:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:11,875 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 14:27:11,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 14:27:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 14:27:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:27:11,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:11,875 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 14:27:11,875 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:11,875 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:11,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-04 14:27:11,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:11,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:11,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:11,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:11,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:11,884 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:11,884 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:11,884 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:27:11,898 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:27:12,162 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 14:27:12,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:12,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:15,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:15,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-04 14:27:15,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:27:15,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:27:15,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:15,012 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 14:27:18,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:18,108 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 14:27:18,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:27:18,109 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 14:27:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:18,110 INFO L225 Difference]: With dead ends: 72 [2018-10-04 14:27:18,110 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 14:27:18,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.6s impTime 66 [2018-10-04 14:27:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 14:27:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 14:27:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 14:27:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 14:27:18,113 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 14:27:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:18,113 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 14:27:18,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:27:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 14:27:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 14:27:18,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:18,114 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 14:27:18,114 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:18,114 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:18,114 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-04 14:27:18,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:18,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:18,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:18,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:18,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:18,121 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:18,121 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:18,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:27:18,131 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:27:21,472 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 14:27:21,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:21,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:25,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:25,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-04 14:27:25,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 14:27:25,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 14:27:25,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:25,543 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 14:27:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:28,761 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:27:28,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:27:28,761 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 14:27:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:28,762 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:27:28,762 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 14:27:28,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.8s impTime 67 [2018-10-04 14:27:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 14:27:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 14:27:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 14:27:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 14:27:28,766 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 14:27:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:28,767 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 14:27:28,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 14:27:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 14:27:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 14:27:28,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:28,767 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 14:27:28,768 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:28,768 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-04 14:27:28,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:28,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:28,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:28,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:28,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:28,775 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:28,775 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:28,775 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:27:28,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:29,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:32,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:32,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-04 14:27:32,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:27:32,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:27:32,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:32,086 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 14:27:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:35,578 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 14:27:35,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:27:35,579 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 14:27:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:35,579 INFO L225 Difference]: With dead ends: 74 [2018-10-04 14:27:35,580 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 14:27:35,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 68 [2018-10-04 14:27:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 14:27:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 14:27:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 14:27:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 14:27:35,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 14:27:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:35,585 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 14:27:35,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:27:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 14:27:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 14:27:35,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:35,585 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 14:27:35,586 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:35,586 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:35,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-04 14:27:35,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:35,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:35,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:35,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:35,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:35,592 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:35,592 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:35,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:27:35,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:27:35,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:27:35,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:35,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:38,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:27:38,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-04 14:27:38,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 14:27:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 14:27:38,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:38,828 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 14:27:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:42,413 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:27:42,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:27:42,413 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 14:27:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:42,414 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:27:42,414 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:27:42,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.7s impTime 69 [2018-10-04 14:27:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:27:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 14:27:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 14:27:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 14:27:42,418 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 14:27:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:42,418 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 14:27:42,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 14:27:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 14:27:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 14:27:42,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:42,419 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 14:27:42,419 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:42,420 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-04 14:27:42,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:42,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:42,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:42,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:42,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:42,427 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:27:42,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:27:42,428 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 (exit command is (exit), workingDir is null) [2018-10-04 14:27:42,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:02,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 14:28:02,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:02,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:05,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:05,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-04 14:28:05,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:28:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:28:05,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:05,395 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 14:28:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:09,251 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 14:28:09,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:28:09,252 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 14:28:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:09,252 INFO L225 Difference]: With dead ends: 76 [2018-10-04 14:28:09,252 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 14:28:09,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 3.0s impTime 70 [2018-10-04 14:28:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 14:28:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 14:28:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 14:28:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 14:28:09,258 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 14:28:09,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:09,258 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 14:28:09,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:28:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 14:28:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 14:28:09,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:09,259 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 14:28:09,259 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:09,259 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-04 14:28:09,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:09,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:09,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:09,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:09,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:09,268 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:09,268 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:09,269 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:09,283 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:09,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:09,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:09,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:12,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:12,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-04 14:28:12,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 14:28:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 14:28:12,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:12,989 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 14:28:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:17,898 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:28:17,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:28:17,898 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 14:28:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:17,899 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:28:17,899 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 14:28:17,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 3.0s impTime 71 [2018-10-04 14:28:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 14:28:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 14:28:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 14:28:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 14:28:17,905 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 14:28:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:17,905 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 14:28:17,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 14:28:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 14:28:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 14:28:17,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:17,906 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 14:28:17,906 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:17,906 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-04 14:28:17,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:17,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:17,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:17,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:17,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:17,914 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:17,914 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:17,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:17,923 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:18,264 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 14:28:18,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:18,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:21,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:21,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-04 14:28:21,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 14:28:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 14:28:21,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:21,592 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. Received shutdown request... [2018-10-04 14:28:23,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:28:23,180 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:28:23,185 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:28:23,185 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:28:23 BoogieIcfgContainer [2018-10-04 14:28:23,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:28:23,186 INFO L168 Benchmark]: Toolchain (without parser) took 257726.19 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 97.0 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 412.4 MB). Peak memory consumption was 509.4 MB. Max. memory is 7.1 GB. [2018-10-04 14:28:23,188 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:28:23,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:28:23,189 INFO L168 Benchmark]: Boogie Preprocessor took 20.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:28:23,189 INFO L168 Benchmark]: RCFGBuilder took 316.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 14:28:23,190 INFO L168 Benchmark]: TraceAbstraction took 257343.13 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 97.0 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 391.2 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. [2018-10-04 14:28:23,194 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 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.72 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 20.08 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 316.77 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 257343.13 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 97.0 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 391.2 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (75states) and FLOYD_HOARE automaton (currently 35 states, 74 states before enhancement), while ReachableStatesComputation was computing reachable states (33 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 257.2s OverallTime, 72 OverallIterations, 71 TraceHistogramMax, 97.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 0 SDslu, 2556 SDs, 0 SdLazy, 129323 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2700 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=71, 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: 0.3s AutomataMinimizationTime, 71 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 61.8s SatisfiabilityAnalysisTime, 93.1s InterpolantComputationTime, 2772 NumberOfCodeBlocks, 2772 NumberOfCodeBlocksAsserted, 750 NumberOfCheckSat, 2700 ConstructedInterpolants, 0 QuantifiedInterpolants, 919171 SizeOfPredicates, 215 NumberOfNonLiveVariables, 14148 ConjunctsInSsa, 10653 ConjunctsInUnsatCore, 72 InterpolantComputations, 1 PerfectInterpolantSequences, 0/62196 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/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-28-23-205.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-28-23-205.csv Completed graceful shutdown