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 [2018-10-04 12:42:49,257 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:42:49,259 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:42:49,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:42:49,271 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:42:49,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:42:49,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:42:49,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:42:49,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:42:49,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:42:49,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:42:49,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:42:49,279 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:42:49,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:42:49,281 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:42:49,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:42:49,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:42:49,284 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:42:49,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:42:49,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:42:49,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:42:49,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:42:49,293 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:42:49,308 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 12:42:49,336 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:42:49,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:42:49,337 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:42:49,337 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:42:49,338 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:42:49,338 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:42:49,338 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:42:49,338 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:42:49,339 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:42:49,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:42:49,340 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:42:49,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:42:49,340 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:42:49,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:42:49,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:42:49,341 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:42:49,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:42:49,341 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:42:49,342 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:42:49,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:42:49,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:42:49,342 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:42:49,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:42:49,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:42:49,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:42:49,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:42:49,343 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:42:49,343 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:42:49,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:42:49,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:42:49,345 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:42:49,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:42:49,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:42:49,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:42:49,432 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:42:49,432 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:42:49,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 12:42:49,433 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-04 12:42:49,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:42:49,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:42:49,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:49,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:42:49,484 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:42:49,502 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,512 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:49,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:42:49,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:42:49,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:42:49,531 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,531 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,532 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,532 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,535 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,537 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,538 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 12:42:49" (1/1) ... [2018-10-04 12:42:49,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:42:49,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:42:49,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:42:49,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:42:49,541 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 12:42:49" (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 12:42:49,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 12:42:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:42:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:42:49,865 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:42:49,866 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 12:42:49 BoogieIcfgContainer [2018-10-04 12:42:49,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:42:49,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:42:49,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:42:49,870 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:42:49,871 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 12:42:49" (1/2) ... [2018-10-04 12:42:49,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750836e5 and model type gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:42:49, skipping insertion in model container [2018-10-04 12:42:49,872 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 12:42:49" (2/2) ... [2018-10-04 12:42:49,874 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 12:42:49,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:42:49,895 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:42:49,941 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:42:49,942 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:42:49,943 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:42:49,943 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:42:49,943 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:42:49,943 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:42:49,943 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:42:49,944 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:42:49,944 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:42:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 12:42:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 12:42:49,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:49,966 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 12:42:49,967 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:49,975 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:49,976 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 12:42:49,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:49,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,057 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:50,057 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:50,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:50,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:50,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,182 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 12:42:50,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:42:50,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:42:50,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:42:50,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:42:50,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,223 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 12:42:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,349 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 12:42:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:42:50,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 12:42:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,376 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:42:50,376 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 12:42:50,381 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 12:42:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 12:42:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 12:42:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 12:42:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 12:42:50,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 12:42:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,413 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 12:42:50,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:42:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 12:42:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:42:50,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,415 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:42:50,415 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,415 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,415 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 12:42:50,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,431 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:50,431 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:50,431 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 12:42:50,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:50,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,540 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 12:42:50,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:50,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 12:42:50,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:42:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:42:50,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,563 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 12:42:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,618 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 12:42:50,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:42:50,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 12:42:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,620 INFO L225 Difference]: With dead ends: 8 [2018-10-04 12:42:50,620 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 12:42:50,621 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 12:42:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 12:42:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 12:42:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 12:42:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 12:42:50,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 12:42:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,625 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 12:42:50,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:42:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 12:42:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 12:42:50,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,626 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 12:42:50,626 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,626 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 12:42:50,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:50,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,635 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:50,636 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:50,636 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 12:42:50,646 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:50,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:50,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:50,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,768 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 12:42:50,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:50,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-04 12:42:50,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:42:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:42:50,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,792 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 12:42:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,856 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 12:42:50,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:42:50,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 12:42:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,857 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:42:50,857 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:42:50,858 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 12:42:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:42:50,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:42:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:42:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:42:50,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 12:42:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,861 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:42:50,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:42:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:42:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:42:50,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,862 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 12:42:50,863 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,863 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 12:42:50,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:50,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,873 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:50,873 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:50,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:50,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:50,901 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 12:42:50,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:50,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,064 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 12:42:51,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:51,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-04 12:42:51,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:42:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:42:51,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,085 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 12:42:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:51,300 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 12:42:51,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:42:51,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 12:42:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:51,302 INFO L225 Difference]: With dead ends: 10 [2018-10-04 12:42:51,302 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 12:42:51,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 4 [2018-10-04 12:42:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 12:42:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 12:42:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 12:42:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 12:42:51,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 12:42:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:51,308 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 12:42:51,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:42:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 12:42:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 12:42:51,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:51,309 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 12:42:51,309 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:51,309 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 12:42:51,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:51,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:51,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:51,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,320 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:51,320 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:51,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (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 12:42:51,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:51,344 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:51,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:51,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,474 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 12:42:51,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:51,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-04 12:42:51,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:42:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:42:51,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,496 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 12:42:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:51,564 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:42:51,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:42:51,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 12:42:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:51,566 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:42:51,566 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:42:51,566 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 12:42:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:42:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:42:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:42:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:42:51,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 12:42:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:51,571 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:42:51,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:42:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:42:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:42:51,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:51,572 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 12:42:51,572 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:51,572 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 12:42:51,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:51,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:51,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:51,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,583 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:51,583 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:51,584 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 12:42:51,596 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:51,610 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 12:42:51,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:51,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,808 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 12:42:51,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:51,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-04 12:42:51,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:42:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:42:51,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,830 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 12:42:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:51,977 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 12:42:51,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:42:51,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 12:42:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:51,978 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:42:51,978 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:42:51,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 12:42:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:42:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 12:42:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 12:42:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 12:42:51,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 12:42:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:51,982 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 12:42:51,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:42:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 12:42:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 12:42:51,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:51,983 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 12:42:51,984 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:51,984 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:51,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 12:42:51,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:51,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:51,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:51,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,996 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:51,997 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:51,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:52,012 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:52,028 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 12:42:52,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:52,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:52,273 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 12:42:52,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:52,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-04 12:42:52,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:42:52,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:42:52,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:52,310 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 12:42:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:52,660 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:42:52,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:42:52,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 12:42:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:52,661 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:42:52,661 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:42:52,662 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 12:42:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:42:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:42:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:42:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:42:52,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 12:42:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:52,666 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:42:52,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:42:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:42:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:42:52,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:52,667 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 12:42:52,667 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:52,668 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 12:42:52,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:52,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:52,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:52,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,679 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:52,680 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:52,680 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 12:42:52,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:52,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:52,885 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 12:42:52,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:52,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-04 12:42:52,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:42:52,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:42:52,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:52,908 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 12:42:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:53,002 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 12:42:53,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:42:53,003 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 12:42:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:53,003 INFO L225 Difference]: With dead ends: 14 [2018-10-04 12:42:53,003 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 12:42:53,004 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 12:42:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 12:42:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 12:42:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 12:42:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 12:42:53,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 12:42:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:53,008 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 12:42:53,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:42:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 12:42:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:42:53,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:53,008 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 12:42:53,009 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:53,009 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:53,009 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 12:42:53,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:53,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:53,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:53,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,022 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:53,022 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:53,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:53,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:53,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:53,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:53,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:53,167 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 12:42:53,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:53,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-04 12:42:53,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:42:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:42:53,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:53,188 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 12:42:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:53,299 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 12:42:53,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:42:53,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 12:42:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:53,302 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:42:53,302 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:42:53,303 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 12:42:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:42:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:42:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:42:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 12:42:53,307 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 12:42:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:53,307 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 12:42:53,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:42:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 12:42:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:42:53,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:53,308 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 12:42:53,308 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:53,308 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:53,309 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 12:42:53,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:53,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:53,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:53,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,319 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:53,319 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:53,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:53,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:53,350 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 12:42:53,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:53,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:53,531 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 12:42:53,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:53,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-04 12:42:53,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:42:53,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:42:53,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:53,554 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 12:42:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:53,736 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 12:42:53,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:42:53,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 12:42:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:53,740 INFO L225 Difference]: With dead ends: 16 [2018-10-04 12:42:53,740 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 12:42:53,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 10 [2018-10-04 12:42:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 12:42:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 12:42:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 12:42:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 12:42:53,744 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 12:42:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:53,744 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 12:42:53,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:42:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 12:42:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 12:42:53,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:53,745 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 12:42:53,746 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:53,746 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:53,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 12:42:53,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:53,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:53,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:53,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,757 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:53,757 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:53,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:53,766 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:53,784 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:53,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:53,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:53,929 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 12:42:53,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:53,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-04 12:42:53,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:42:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:42:53,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:53,950 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 12:42:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:54,113 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 12:42:54,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:42:54,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 12:42:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:54,115 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:42:54,115 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:42:54,115 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 12:42:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:42:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:42:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:42:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:42:54,119 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 12:42:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:54,120 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:42:54,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:42:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:42:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:42:54,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:54,121 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 12:42:54,121 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:54,121 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 12:42:54,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:54,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:54,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,132 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:54,132 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:54,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:54,145 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:54,167 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 12:42:54,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:54,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:54,361 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 12:42:54,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:54,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-04 12:42:54,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:42:54,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:42:54,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:54,389 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 12:42:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:54,730 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 12:42:54,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:42:54,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 12:42:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:54,732 INFO L225 Difference]: With dead ends: 18 [2018-10-04 12:42:54,732 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 12:42:54,732 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 12:42:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 12:42:54,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 12:42:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 12:42:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 12:42:54,737 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 12:42:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:54,737 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 12:42:54,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:42:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 12:42:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 12:42:54,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:54,738 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 12:42:54,738 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:54,738 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:54,738 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 12:42:54,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:54,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:54,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,749 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:54,749 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:54,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:54,765 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:54,789 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 12:42:54,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:54,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:55,129 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 12:42:55,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:55,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-04 12:42:55,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:42:55,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:42:55,153 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:55,153 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 12:42:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:55,407 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 12:42:55,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:42:55,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 12:42:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:55,412 INFO L225 Difference]: With dead ends: 19 [2018-10-04 12:42:55,412 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 12:42:55,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 12:42:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 12:42:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 12:42:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 12:42:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 12:42:55,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 12:42:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:55,421 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 12:42:55,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:42:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 12:42:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 12:42:55,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:55,422 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 12:42:55,422 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:55,422 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:55,422 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 12:42:55,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:55,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:55,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:55,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,445 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:55,445 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:55,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:55,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:55,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:55,849 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 12:42:55,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:55,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-04 12:42:55,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:42:55,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:42:55,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:55,871 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 12:42:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:56,113 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 12:42:56,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:42:56,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 12:42:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:56,114 INFO L225 Difference]: With dead ends: 20 [2018-10-04 12:42:56,114 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 12:42:56,114 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 12:42:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 12:42:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 12:42:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 12:42:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 12:42:56,118 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 12:42:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:56,118 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 12:42:56,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:42:56,119 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 12:42:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 12:42:56,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:56,119 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 12:42:56,119 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:56,120 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 12:42:56,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:56,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:56,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:56,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,130 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:56,130 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:56,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:56,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:56,168 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:56,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:56,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:56,468 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 12:42:56,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:56,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-04 12:42:56,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:42:56,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:42:56,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:56,489 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 12:42:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:56,707 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 12:42:56,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:42:56,707 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 12:42:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:56,708 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:42:56,708 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:42:56,709 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 12:42:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:42:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:42:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:42:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:42:56,715 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 12:42:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:56,715 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:42:56,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:42:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:42:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:42:56,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:56,716 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 12:42:56,717 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:56,717 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:56,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 12:42:56,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:56,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:56,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:56,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,727 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:56,727 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:56,727 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:56,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:56,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 12:42:56,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:56,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:58,077 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 12:42:58,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:58,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-04 12:42:58,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:42:58,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:42:58,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:58,100 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 12:42:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:58,494 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 12:42:58,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:42:58,498 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 12:42:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:58,499 INFO L225 Difference]: With dead ends: 22 [2018-10-04 12:42:58,499 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 12:42:58,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 16 [2018-10-04 12:42:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 12:42:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 12:42:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 12:42:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 12:42:58,504 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 12:42:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:58,504 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 12:42:58,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:42:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 12:42:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 12:42:58,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:58,505 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 12:42:58,505 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:58,506 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 12:42:58,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:58,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:58,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:58,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,516 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:58,516 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:58,517 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 12:42:58,535 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:58,561 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:58,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:58,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:59,008 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 12:42:59,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:59,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-04 12:42:59,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:42:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:42:59,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:59,030 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 12:42:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:59,357 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 12:42:59,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:42:59,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 12:42:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:59,359 INFO L225 Difference]: With dead ends: 23 [2018-10-04 12:42:59,359 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 12:42:59,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 17 [2018-10-04 12:42:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 12:42:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 12:42:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:42:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 12:42:59,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 12:42:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:59,363 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 12:42:59,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:42:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 12:42:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:42:59,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:59,364 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 12:42:59,364 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:59,365 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-04 12:42:59,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:59,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:59,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:59,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,376 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:42:59,376 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:42:59,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:42:59,390 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:59,419 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 12:42:59,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:59,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:59,907 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 12:42:59,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:42:59,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-04 12:42:59,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:42:59,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:42:59,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:59,929 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 12:43:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:00,420 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 12:43:00,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:43:00,421 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 12:43:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:00,422 INFO L225 Difference]: With dead ends: 24 [2018-10-04 12:43:00,422 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 12:43:00,422 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 12:43:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 12:43:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 12:43:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 12:43:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 12:43:00,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 12:43:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:00,427 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 12:43:00,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:43:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 12:43:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 12:43:00,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:00,428 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 12:43:00,429 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:00,429 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-04 12:43:00,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:00,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:00,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:00,439 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:00,439 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:00,439 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:00,461 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:00,500 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 12:43:00,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:00,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:01,030 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:01,034 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 12:43:01,054 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:01,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-04 12:43:01,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:43:01,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:43:01,055 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:01,056 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 12:43:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:01,396 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 12:43:01,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:43:01,397 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 12:43:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:01,397 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:43:01,398 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:43:01,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 19 [2018-10-04 12:43:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:43:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:43:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:43:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:43:01,403 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 12:43:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:01,403 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:43:01,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:43:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:43:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:43:01,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:01,404 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 12:43:01,404 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:01,404 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:01,404 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-04 12:43:01,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:01,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:01,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:01,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,418 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:01,419 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:01,419 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) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:43:01,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:01,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:01,948 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:01,998 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 12:43:02,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:02,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-04 12:43:02,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:43:02,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:43:02,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:02,028 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 12:43:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:02,356 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 12:43:02,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:43:02,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 12:43:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:02,357 INFO L225 Difference]: With dead ends: 26 [2018-10-04 12:43:02,357 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 12:43:02,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 20 [2018-10-04 12:43:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 12:43:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 12:43:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 12:43:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 12:43:02,362 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 12:43:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:02,362 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 12:43:02,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:43:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 12:43:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 12:43:02,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:02,363 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 12:43:02,364 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:02,364 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-04 12:43:02,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:02,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:02,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:02,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:02,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:02,375 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:02,378 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:02,378 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 12:43:02,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:02,417 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:02,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:02,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:02,751 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:02,812 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 12:43:02,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:02,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-04 12:43:02,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:43:02,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:43:02,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:02,833 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 12:43:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:03,389 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 12:43:03,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:43:03,389 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 12:43:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:03,390 INFO L225 Difference]: With dead ends: 27 [2018-10-04 12:43:03,390 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:43:03,391 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 12:43:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:43:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:43:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:43:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 12:43:03,396 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 12:43:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:03,396 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 12:43:03,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:43:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 12:43:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:43:03,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:03,397 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 12:43:03,397 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:03,397 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-04 12:43:03,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:03,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:03,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:03,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,406 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:03,406 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:03,406 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 12:43:03,420 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:03,545 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 12:43:03,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:03,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:03,836 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:03,917 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 12:43:03,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:03,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-04 12:43:03,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:43:03,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:43:03,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:03,939 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 12:43:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:04,392 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 12:43:04,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:43:04,395 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 12:43:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:04,396 INFO L225 Difference]: With dead ends: 28 [2018-10-04 12:43:04,396 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 12:43:04,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 22 [2018-10-04 12:43:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 12:43:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 12:43:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 12:43:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 12:43:04,400 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 12:43:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:04,401 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 12:43:04,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:43:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 12:43:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 12:43:04,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:04,402 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 12:43:04,402 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:04,402 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-04 12:43:04,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:04,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:04,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:04,411 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:04,411 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:04,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:04,434 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:04,471 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:04,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:04,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:04,779 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:04,891 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 12:43:04,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:04,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-04 12:43:04,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:43:04,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:43:04,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:04,912 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 12:43:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:05,625 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 12:43:05,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:43:05,625 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 12:43:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:05,626 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:43:05,626 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:43:05,628 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 12:43:05,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:43:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:43:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:43:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:43:05,632 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 12:43:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:05,633 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:43:05,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:43:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:43:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:43:05,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:05,633 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 12:43:05,634 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:05,634 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-04 12:43:05,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:05,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:05,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:05,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,643 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:05,644 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:05,644 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) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:43:05,656 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:05,707 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 12:43:05,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:05,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:06,167 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:06,428 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 12:43:06,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:06,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-04 12:43:06,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:43:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:43:06,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:06,457 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 12:43:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:07,013 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 12:43:07,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:43:07,013 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 12:43:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:07,014 INFO L225 Difference]: With dead ends: 30 [2018-10-04 12:43:07,014 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 12:43:07,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 24 [2018-10-04 12:43:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 12:43:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 12:43:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 12:43:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 12:43:07,019 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 12:43:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:07,020 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 12:43:07,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:43:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 12:43:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 12:43:07,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:07,021 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 12:43:07,021 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:07,021 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-04 12:43:07,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:07,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:07,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:07,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:07,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:07,029 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:07,029 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:07,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:07,049 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:07,126 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 12:43:07,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:07,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:07,508 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:07,671 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 12:43:07,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:07,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-04 12:43:07,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:43:07,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:43:07,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:07,692 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 12:43:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:08,176 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 12:43:08,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:43:08,176 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 12:43:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:08,177 INFO L225 Difference]: With dead ends: 31 [2018-10-04 12:43:08,177 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:43:08,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 25 [2018-10-04 12:43:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:43:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:43:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:43:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 12:43:08,183 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 12:43:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:08,183 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 12:43:08,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:43:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 12:43:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:43:08,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:08,184 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 12:43:08,184 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:08,184 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:08,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-04 12:43:08,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:08,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:08,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:08,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,192 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:08,192 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:08,192 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 12:43:08,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:08,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:08,563 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:08,796 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 12:43:08,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:08,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-04 12:43:08,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:43:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:43:08,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:08,818 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 12:43:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:09,318 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 12:43:09,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:43:09,319 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 12:43:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:09,319 INFO L225 Difference]: With dead ends: 32 [2018-10-04 12:43:09,320 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 12:43:09,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 26 [2018-10-04 12:43:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 12:43:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 12:43:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 12:43:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 12:43:09,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 12:43:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:09,326 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 12:43:09,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:43:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 12:43:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 12:43:09,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:09,327 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 12:43:09,327 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:09,327 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:09,327 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-04 12:43:09,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:09,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:09,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:09,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:09,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:09,334 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:09,334 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:09,334 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 12:43:09,345 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:09,385 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:09,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:09,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:09,711 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:09,955 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 12:43:09,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:09,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-04 12:43:09,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:43:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:43:09,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:09,986 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 12:43:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:10,519 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 12:43:10,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:43:10,520 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 12:43:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:10,520 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:43:10,521 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:43:10,521 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 12:43:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:43:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:43:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:43:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:43:10,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 12:43:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:10,526 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:43:10,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:43:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:43:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:43:10,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:10,527 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 12:43:10,527 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:10,527 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-04 12:43:10,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:10,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:10,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,535 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:10,535 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:10,535 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) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:43:10,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:10,913 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 12:43:10,913 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:10,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:11,335 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:11,582 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 12:43:11,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:11,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-04 12:43:11,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:43:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:43:11,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:11,603 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 12:43:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:12,176 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 12:43:12,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:43:12,177 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 12:43:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:12,177 INFO L225 Difference]: With dead ends: 34 [2018-10-04 12:43:12,177 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 12:43:12,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 28 [2018-10-04 12:43:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 12:43:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 12:43:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 12:43:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 12:43:12,184 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 12:43:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:12,184 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 12:43:12,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:43:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 12:43:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 12:43:12,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:12,185 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 12:43:12,185 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:12,185 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-04 12:43:12,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:12,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:12,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:12,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:12,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:12,192 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:12,192 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:12,192 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 12:43:12,209 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:12,255 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:12,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:12,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:12,595 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:12,881 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 12:43:12,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:12,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-04 12:43:12,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:43:12,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:43:12,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:12,902 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 12:43:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:13,508 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 12:43:13,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:43:13,509 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 12:43:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:13,509 INFO L225 Difference]: With dead ends: 35 [2018-10-04 12:43:13,510 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:43:13,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-04 12:43:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:43:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:43:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:43:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 12:43:13,515 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 12:43:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:13,515 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 12:43:13,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:43:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 12:43:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:43:13,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:13,516 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 12:43:13,516 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:13,516 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:13,517 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-04 12:43:13,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:13,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:13,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:13,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:13,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:13,524 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:13,524 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:13,524 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) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:43:13,534 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:13,584 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 12:43:13,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:13,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:13,866 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:14,216 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 12:43:14,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:14,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-04 12:43:14,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:43:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:43:14,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:14,239 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 12:43:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:14,916 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 12:43:14,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:43:14,917 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 12:43:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:14,917 INFO L225 Difference]: With dead ends: 36 [2018-10-04 12:43:14,917 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 12:43:14,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.5s impTime 30 [2018-10-04 12:43:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 12:43:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 12:43:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 12:43:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 12:43:14,922 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 12:43:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:14,923 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 12:43:14,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:43:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 12:43:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 12:43:14,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:14,924 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 12:43:14,924 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:14,924 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:14,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-04 12:43:14,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:14,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:14,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:14,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:14,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:14,931 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:14,931 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:14,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:14,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:15,085 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 12:43:15,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:15,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:15,584 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:16,049 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 12:43:16,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:16,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-04 12:43:16,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:43:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:43:16,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:16,072 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 12:43:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:16,946 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 12:43:16,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:43:16,947 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 12:43:16,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:16,948 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:43:16,948 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:43:16,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 31 [2018-10-04 12:43:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:43:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:43:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:43:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:43:16,954 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 12:43:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:16,954 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:43:16,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:43:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:43:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:43:16,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:16,955 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 12:43:16,955 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:16,955 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:16,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-04 12:43:16,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:16,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:16,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:16,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:16,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:16,963 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:16,963 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:16,963 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 12:43:16,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:17,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:17,320 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:17,716 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 12:43:17,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:17,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-04 12:43:17,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:43:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:43:17,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:17,737 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 12:43:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:18,455 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 12:43:18,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:43:18,455 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 12:43:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:18,456 INFO L225 Difference]: With dead ends: 38 [2018-10-04 12:43:18,456 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 12:43:18,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 32 [2018-10-04 12:43:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 12:43:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 12:43:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 12:43:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 12:43:18,461 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 12:43:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:18,462 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 12:43:18,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:43:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 12:43:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 12:43:18,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:18,462 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 12:43:18,463 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:18,463 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:18,463 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-04 12:43:18,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:18,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:18,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:18,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:18,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:18,470 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:18,470 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:18,470 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 12:43:18,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:18,539 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:18,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:18,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:18,811 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:19,241 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 12:43:19,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:19,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-04 12:43:19,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:43:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:43:19,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:19,262 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 12:43:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:20,045 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 12:43:20,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:43:20,046 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 12:43:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:20,046 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:43:20,047 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:43:20,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 33 [2018-10-04 12:43:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:43:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:43:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:43:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 12:43:20,051 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 12:43:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:20,052 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 12:43:20,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:43:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 12:43:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:43:20,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:20,052 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 12:43:20,053 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:20,053 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-04 12:43:20,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:20,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:20,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:20,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:20,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:20,059 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:20,060 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:20,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:20,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:20,727 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 12:43:20,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:20,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:21,027 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:21,683 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 12:43:21,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:21,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-04 12:43:21,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:43:21,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:43:21,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:21,703 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 12:43:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:22,569 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 12:43:22,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:43:22,570 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 12:43:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:22,571 INFO L225 Difference]: With dead ends: 40 [2018-10-04 12:43:22,571 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 12:43:22,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 34 [2018-10-04 12:43:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 12:43:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 12:43:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 12:43:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 12:43:22,574 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 12:43:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:22,574 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 12:43:22,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:43:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 12:43:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 12:43:22,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:22,575 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 12:43:22,575 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:22,575 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-04 12:43:22,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:22,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:22,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:22,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:22,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:22,583 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:22,583 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:22,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:22,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:22,665 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:22,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:22,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:22,934 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:23,508 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:23,514 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 12:43:23,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:23,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-04 12:43:23,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:43:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:43:23,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:23,535 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 12:43:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:24,445 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 12:43:24,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:43:24,446 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 12:43:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:24,446 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:43:24,446 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:43:24,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 35 [2018-10-04 12:43:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:43:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:43:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:43:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:43:24,451 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 12:43:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:24,452 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:43:24,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:43:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:43:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:43:24,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:24,452 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 12:43:24,453 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:24,453 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-04 12:43:24,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:24,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:24,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:24,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:24,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:24,461 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:24,461 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:24,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:24,478 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:24,543 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 12:43:24,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:24,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:24,811 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:25,421 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:25,468 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 12:43:25,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:25,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-04 12:43:25,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:43:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:43:25,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:25,489 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 12:43:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:26,581 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 12:43:26,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:43:26,582 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 12:43:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:26,582 INFO L225 Difference]: With dead ends: 42 [2018-10-04 12:43:26,582 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 12:43:26,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 36 [2018-10-04 12:43:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 12:43:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 12:43:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 12:43:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 12:43:26,585 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 12:43:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:26,586 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 12:43:26,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:43:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 12:43:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 12:43:26,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:26,586 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 12:43:26,586 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:26,587 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-04 12:43:26,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:26,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:26,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:26,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,594 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:26,594 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:26,595 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 12:43:26,604 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:26,809 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 12:43:26,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:26,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:27,148 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:27,772 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:27,862 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 12:43:27,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:27,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-04 12:43:27,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:43:27,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:43:27,884 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:27,884 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 12:43:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:28,849 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 12:43:28,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:43:28,850 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 12:43:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:28,850 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:43:28,850 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:43:28,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 37 [2018-10-04 12:43:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:43:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:43:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:43:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 12:43:28,855 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 12:43:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:28,855 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 12:43:28,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:43:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 12:43:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:43:28,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:28,856 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 12:43:28,856 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:28,856 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:28,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-04 12:43:28,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:28,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:28,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:28,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:28,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:28,864 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:28,864 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:28,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:28,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:28,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:29,198 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:29,720 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:29,851 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 12:43:29,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:29,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-04 12:43:29,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:43:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:43:29,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:29,872 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 12:43:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:30,961 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 12:43:30,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:43:30,962 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 12:43:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:30,962 INFO L225 Difference]: With dead ends: 44 [2018-10-04 12:43:30,963 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 12:43:30,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 38 [2018-10-04 12:43:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 12:43:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 12:43:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 12:43:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 12:43:30,967 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 12:43:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:30,967 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 12:43:30,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:43:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 12:43:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 12:43:30,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:30,968 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 12:43:30,968 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:30,968 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:30,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-04 12:43:30,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:30,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:30,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:30,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:30,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:30,983 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:30,983 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:30,983 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 12:43:30,993 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:31,070 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:31,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:31,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:31,892 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:33,092 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:33,267 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 12:43:33,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:33,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-04 12:43:33,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:43:33,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:43:33,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:33,292 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 12:43:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:34,404 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 12:43:34,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:43:34,405 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 12:43:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:34,406 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:43:34,406 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:43:34,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 39 [2018-10-04 12:43:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:43:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:43:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:43:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:43:34,409 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 12:43:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:34,410 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:43:34,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:43:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:43:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:43:34,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:34,410 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 12:43:34,411 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:34,411 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-04 12:43:34,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:34,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:34,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:34,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:34,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:34,416 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:34,416 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:34,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:34,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:36,148 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 12:43:36,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:36,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:36,487 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:37,165 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:37,396 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 12:43:37,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:37,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-04 12:43:37,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:43:37,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:43:37,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:37,417 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 12:43:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:38,606 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 12:43:38,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:43:38,607 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 12:43:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:38,607 INFO L225 Difference]: With dead ends: 46 [2018-10-04 12:43:38,607 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 12:43:38,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 40 [2018-10-04 12:43:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 12:43:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 12:43:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 12:43:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 12:43:38,610 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 12:43:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:38,610 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 12:43:38,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:43:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 12:43:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 12:43:38,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:38,612 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 12:43:38,612 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:38,612 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:38,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-04 12:43:38,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:38,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:38,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:38,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:38,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:38,620 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:38,620 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:38,621 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) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:43:38,635 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:38,730 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:38,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:38,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:39,285 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:39,818 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:40,084 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 12:43:40,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:40,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-04 12:43:40,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:43:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:43:40,105 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:40,105 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 12:43:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:41,274 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 12:43:41,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:43:41,274 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 12:43:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:41,275 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:43:41,275 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:43:41,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 41 [2018-10-04 12:43:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:43:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:43:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:43:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 12:43:41,279 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 12:43:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:41,279 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 12:43:41,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:43:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 12:43:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:43:41,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:41,280 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 12:43:41,280 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:41,280 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-04 12:43:41,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:41,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:41,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:41,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:41,288 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:41,288 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:41,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:43:41,301 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:41,423 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 12:43:41,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:41,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:42,000 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:42,553 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:42,882 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 12:43:42,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:42,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-04 12:43:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:43:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:43:42,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:42,903 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 12:43:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:44,134 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 12:43:44,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:43:44,134 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 12:43:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:44,135 INFO L225 Difference]: With dead ends: 48 [2018-10-04 12:43:44,135 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 12:43:44,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 42 [2018-10-04 12:43:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 12:43:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 12:43:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 12:43:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 12:43:44,139 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 12:43:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:44,139 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 12:43:44,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:43:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 12:43:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 12:43:44,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:44,140 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 12:43:44,140 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:44,140 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-04 12:43:44,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:44,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:44,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:44,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,147 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:44,147 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:44,147 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 12:43:44,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:44,627 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 12:43:44,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:44,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:45,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:45,972 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:46,344 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 12:43:46,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:46,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-04 12:43:46,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:43:46,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:43:46,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:46,365 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 12:43:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:47,830 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 12:43:47,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:43:47,830 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 12:43:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:47,831 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:43:47,831 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:43:47,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 43 [2018-10-04 12:43:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:43:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:43:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:43:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:43:47,836 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 12:43:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:47,836 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:43:47,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:43:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:43:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:43:47,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:47,837 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 12:43:47,837 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:47,837 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-04 12:43:47,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:47,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:47,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:47,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:47,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:47,844 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:47,844 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:47,844 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 12:43:47,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:47,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:48,213 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:48,743 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:49,149 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 12:43:49,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:49,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-04 12:43:49,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:43:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:43:49,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:49,170 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 12:43:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:50,522 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 12:43:50,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:43:50,523 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 12:43:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:50,524 INFO L225 Difference]: With dead ends: 50 [2018-10-04 12:43:50,524 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 12:43:50,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 1.0s impTime 44 [2018-10-04 12:43:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 12:43:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 12:43:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 12:43:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 12:43:50,528 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 12:43:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:50,528 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 12:43:50,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:43:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 12:43:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 12:43:50,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:50,529 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 12:43:50,529 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:50,529 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-04 12:43:50,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:50,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:50,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:50,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:50,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:50,537 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:50,537 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:50,537 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 12:43:50,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:50,630 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:50,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:50,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:50,961 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:51,710 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:52,433 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 12:43:52,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:52,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-04 12:43:52,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:43:52,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:43:52,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:52,454 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 12:43:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:53,839 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 12:43:53,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:43:53,840 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 12:43:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:53,841 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:43:53,841 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:43:53,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime 45 [2018-10-04 12:43:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:43:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:43:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:43:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 12:43:53,846 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 12:43:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:53,846 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 12:43:53,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:43:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 12:43:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:43:53,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:53,847 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 12:43:53,847 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:53,847 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-04 12:43:53,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:53,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:53,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:53,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:53,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:53,855 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:53,855 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:53,855 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 12:43:53,869 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:56,433 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 12:43:56,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:56,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:56,699 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:43:57,488 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:43:57,997 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 12:43:58,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:43:58,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-04 12:43:58,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:43:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:43:58,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:58,018 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 12:43:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:59,506 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 12:43:59,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:43:59,506 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 12:43:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:59,507 INFO L225 Difference]: With dead ends: 52 [2018-10-04 12:43:59,507 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 12:43:59,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 46 [2018-10-04 12:43:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 12:43:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 12:43:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 12:43:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 12:43:59,512 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 12:43:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:59,513 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 12:43:59,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:43:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 12:43:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 12:43:59,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:59,513 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 12:43:59,514 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:59,514 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-04 12:43:59,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:59,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:59,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:59,521 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:43:59,521 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:43:59,521 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 12:43:59,536 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:59,626 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:59,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:59,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:59,906 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:00,459 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:01,014 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 12:44:01,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:01,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-04 12:44:01,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:44:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:44:01,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:01,034 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 12:44:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:02,808 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 12:44:02,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:44:02,809 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 12:44:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:02,809 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:44:02,809 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:44:02,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 47 [2018-10-04 12:44:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:44:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:44:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:44:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:44:02,813 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 12:44:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:02,814 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:44:02,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:44:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:44:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:44:02,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:02,815 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 12:44:02,815 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:02,815 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-04 12:44:02,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:02,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:02,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:02,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:02,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:02,822 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:02,822 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:02,822 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 12:44:02,836 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:02,951 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 12:44:02,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:02,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:03,216 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:03,753 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:04,363 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 12:44:04,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:04,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-04 12:44:04,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:44:04,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:44:04,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:04,384 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 12:44:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:06,026 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 12:44:06,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:44:06,027 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 12:44:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:06,028 INFO L225 Difference]: With dead ends: 54 [2018-10-04 12:44:06,028 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 12:44:06,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.2s impTime 48 [2018-10-04 12:44:06,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 12:44:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 12:44:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 12:44:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 12:44:06,034 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 12:44:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:06,034 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 12:44:06,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:44:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 12:44:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 12:44:06,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:06,035 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 12:44:06,035 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:06,035 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:06,035 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-04 12:44:06,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:06,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:06,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:06,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:06,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:06,042 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:06,042 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:06,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:44:06,049 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:06,727 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 12:44:06,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:06,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:07,025 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:07,725 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:08,398 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 12:44:08,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:08,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-04 12:44:08,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:44:08,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:44:08,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:08,419 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 12:44:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:10,096 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 12:44:10,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:44:10,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 12:44:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:10,097 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:44:10,097 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:44:10,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 49 [2018-10-04 12:44:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:44:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:44:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:44:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 12:44:10,102 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 12:44:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:10,102 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 12:44:10,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:44:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 12:44:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:44:10,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:10,103 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 12:44:10,103 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:10,103 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-04 12:44:10,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:10,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:10,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:10,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:10,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:10,110 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:10,110 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:10,111 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 12:44:10,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:10,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:10,515 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:11,051 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:11,821 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:11,829 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 12:44:11,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:11,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-04 12:44:11,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:44:11,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:44:11,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:11,850 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 12:44:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:13,674 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 12:44:13,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:44:13,675 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 12:44:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:13,676 INFO L225 Difference]: With dead ends: 56 [2018-10-04 12:44:13,676 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 12:44:13,676 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 12:44:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 12:44:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 12:44:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 12:44:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 12:44:13,681 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 12:44:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:13,682 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 12:44:13,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:44:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 12:44:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 12:44:13,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:13,683 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 12:44:13,683 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:13,683 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-04 12:44:13,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:13,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:13,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:13,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:13,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:13,691 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:13,691 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:13,691 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) [2018-10-04 12:44:13,705 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:44:13,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:13,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:13,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:14,208 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:14,769 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:15,647 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:16,034 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 12:44:16,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:16,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-04 12:44:16,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:44:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:44:16,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:16,056 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 12:44:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:18,031 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 12:44:18,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:44:18,032 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 12:44:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:18,033 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:44:18,033 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:44:18,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 51 [2018-10-04 12:44:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:44:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:44:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:44:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:44:18,037 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 12:44:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:18,037 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:44:18,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:44:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:44:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:44:18,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:18,038 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 12:44:18,038 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:18,038 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-04 12:44:18,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:18,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:18,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:18,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:18,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:18,046 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:18,046 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:18,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:44:18,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:22,446 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 12:44:22,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:22,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:22,921 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:23,486 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:24,240 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:24,374 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 12:44:24,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:24,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-04 12:44:24,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:44:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:44:24,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:24,394 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 12:44:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:26,279 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 12:44:26,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:44:26,280 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 12:44:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:26,281 INFO L225 Difference]: With dead ends: 58 [2018-10-04 12:44:26,281 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 12:44:26,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 52 [2018-10-04 12:44:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 12:44:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 12:44:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 12:44:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 12:44:26,285 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 12:44:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:26,285 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 12:44:26,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:44:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 12:44:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 12:44:26,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:26,286 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 12:44:26,286 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:26,286 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:26,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-04 12:44:26,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:26,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:26,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:26,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:26,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:26,295 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:26,295 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:26,295 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) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:44:26,311 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:26,476 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:26,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:26,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:26,824 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:27,350 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:28,354 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:28,538 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 12:44:28,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:28,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-04 12:44:28,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:44:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:44:28,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:28,559 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 12:44:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:30,526 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 12:44:30,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:44:30,526 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 12:44:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:30,527 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:44:30,527 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:44:30,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 53 [2018-10-04 12:44:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:44:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:44:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:44:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 12:44:30,532 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 12:44:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:30,532 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 12:44:30,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:44:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 12:44:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:44:30,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:30,533 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 12:44:30,533 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:30,533 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-04 12:44:30,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:30,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:30,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:30,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,541 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:30,541 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:30,542 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 12:44:30,549 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:30,708 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 12:44:30,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:30,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:30,972 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:31,597 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:32,350 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:32,592 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 12:44:32,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:32,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-04 12:44:32,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:44:32,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:44:32,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:32,613 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 12:44:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:34,806 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 12:44:34,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:44:34,807 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 12:44:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:34,808 INFO L225 Difference]: With dead ends: 60 [2018-10-04 12:44:34,808 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 12:44:34,808 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 12:44:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 12:44:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 12:44:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 12:44:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 12:44:34,812 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 12:44:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:34,812 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 12:44:34,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:44:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 12:44:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 12:44:34,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:34,812 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 12:44:34,812 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:34,813 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-04 12:44:34,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:34,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:34,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:34,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:34,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:34,820 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:34,820 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:34,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:44:34,836 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:36,231 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 12:44:36,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:36,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:36,501 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:37,026 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:37,771 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:38,315 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 12:44:38,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:38,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-04 12:44:38,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:44:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:44:38,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:38,336 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 12:44:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:40,446 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 12:44:40,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:44:40,446 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 12:44:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:40,447 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:44:40,447 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:44:40,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 55 [2018-10-04 12:44:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:44:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:44:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:44:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:44:40,451 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 12:44:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:40,451 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:44:40,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:44:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:44:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:44:40,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:40,452 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 12:44:40,452 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:40,452 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:40,452 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-04 12:44:40,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:40,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:40,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:40,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:40,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:40,460 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:40,460 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:40,460 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 12:44:40,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:40,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:40,854 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:41,382 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:42,143 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:42,507 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 12:44:42,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:42,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-04 12:44:42,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:44:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:44:42,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:42,529 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 12:44:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:44,847 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 12:44:44,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:44:44,847 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 12:44:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:44,848 INFO L225 Difference]: With dead ends: 62 [2018-10-04 12:44:44,848 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 12:44:44,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 56 [2018-10-04 12:44:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 12:44:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 12:44:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 12:44:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 12:44:44,852 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 12:44:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:44,853 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 12:44:44,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:44:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 12:44:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 12:44:44,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:44,853 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 12:44:44,853 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:44,854 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-04 12:44:44,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:44,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:44,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:44,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:44,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:44,862 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:44,862 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:44,862 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 12:44:44,877 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:45,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:45,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:45,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:45,265 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:45,817 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:46,562 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:47,005 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 12:44:47,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:47,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-04 12:44:47,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:44:47,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:44:47,026 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:47,026 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 12:44:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:49,495 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 12:44:49,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:44:49,496 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 12:44:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:49,496 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:44:49,496 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:44:49,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.7s impTime 57 [2018-10-04 12:44:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:44:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:44:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:44:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 12:44:49,501 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 12:44:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:49,501 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 12:44:49,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:44:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 12:44:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:44:49,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:49,502 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 12:44:49,502 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:49,502 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-04 12:44:49,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:49,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:49,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:49,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:49,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:49,510 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:44:49,510 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:44:49,511 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:44:49,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:57,200 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 12:44:57,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:57,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:57,496 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:44:58,015 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:44:59,005 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:44:59,510 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 12:44:59,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:44:59,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-04 12:44:59,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:44:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:44:59,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:59,530 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 12:45:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:01,815 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 12:45:01,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:45:01,816 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 12:45:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:01,817 INFO L225 Difference]: With dead ends: 64 [2018-10-04 12:45:01,817 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 12:45:01,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 58 [2018-10-04 12:45:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 12:45:01,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 12:45:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 12:45:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 12:45:01,822 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 12:45:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:01,822 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 12:45:01,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:45:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 12:45:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 12:45:01,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:01,823 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 12:45:01,823 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:01,823 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:01,823 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-04 12:45:01,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:01,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:01,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:01,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:01,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:01,830 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:01,830 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:01,831 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 12:45:01,845 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:01,985 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:01,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:01,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:02,272 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:02,819 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:03,811 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:04,373 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 12:45:04,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:04,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-04 12:45:04,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:45:04,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:45:04,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:04,395 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 12:45:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:06,806 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 12:45:06,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:45:06,806 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 12:45:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:06,807 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:45:06,807 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:45:06,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 59 [2018-10-04 12:45:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:45:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:45:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:45:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:45:06,812 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 12:45:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:06,813 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:45:06,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:45:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:45:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:45:06,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:06,813 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 12:45:06,814 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:06,814 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-04 12:45:06,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:06,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:06,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:06,822 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:06,822 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:06,822 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 12:45:06,836 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:07,026 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 12:45:07,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:07,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:07,359 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:07,886 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:08,798 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:09,525 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 12:45:09,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:09,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-04 12:45:09,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:45:09,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:45:09,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:09,546 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 12:45:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:12,028 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 12:45:12,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:45:12,029 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 12:45:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:12,030 INFO L225 Difference]: With dead ends: 66 [2018-10-04 12:45:12,030 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 12:45:12,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 60 [2018-10-04 12:45:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 12:45:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 12:45:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 12:45:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 12:45:12,034 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 12:45:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:12,034 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 12:45:12,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:45:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 12:45:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 12:45:12,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:12,035 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 12:45:12,035 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:12,035 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:12,035 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-04 12:45:12,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:12,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:12,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:12,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:12,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:12,042 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:12,042 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:12,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:45:12,049 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:13,908 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 12:45:13,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:13,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:14,914 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:15,431 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:16,205 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:16,886 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 12:45:16,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:16,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-04 12:45:16,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:45:16,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:45:16,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:16,909 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 12:45:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:19,688 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 12:45:19,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:45:19,688 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 12:45:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:19,689 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:45:19,689 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:45:19,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 61 [2018-10-04 12:45:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:45:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:45:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:45:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 12:45:19,692 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 12:45:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:19,693 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 12:45:19,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:45:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 12:45:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:45:19,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:19,693 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 12:45:19,693 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:19,694 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-04 12:45:19,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:19,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:19,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:19,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:19,701 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:19,701 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:19,701 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 12:45:19,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:19,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:20,130 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:20,651 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:21,419 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:22,179 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 12:45:22,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:22,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-04 12:45:22,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:45:22,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:45:22,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:22,200 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 12:45:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:25,027 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 12:45:25,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:45:25,027 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 12:45:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:25,028 INFO L225 Difference]: With dead ends: 68 [2018-10-04 12:45:25,028 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 12:45:25,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 62 [2018-10-04 12:45:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 12:45:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 12:45:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 12:45:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 12:45:25,032 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 12:45:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:25,032 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 12:45:25,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:45:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 12:45:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 12:45:25,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:25,033 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 12:45:25,033 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:25,033 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-04 12:45:25,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:25,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:25,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:25,039 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:25,040 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:25,044 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 12:45:25,067 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:25,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:25,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:25,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:25,501 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:26,092 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:26,862 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:27,694 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 12:45:27,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:27,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-04 12:45:27,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:45:27,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:45:27,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:27,715 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 12:45:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:30,576 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 12:45:30,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:45:30,577 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 12:45:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:30,577 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:45:30,578 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:45:30,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 63 [2018-10-04 12:45:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:45:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:45:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:45:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:45:30,582 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 12:45:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:30,582 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:45:30,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:45:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:45:30,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:45:30,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:30,583 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 12:45:30,583 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:30,583 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-04 12:45:30,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:30,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:30,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:30,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:30,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:30,591 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:30,591 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:30,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:45:30,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:43,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 12:45:43,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:43,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:43,641 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:44,177 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:45,190 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:46,094 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 12:45:46,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:46,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-04 12:45:46,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:45:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:45:46,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:46,115 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 12:45:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:48,914 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 12:45:48,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:45:48,915 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 12:45:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:48,916 INFO L225 Difference]: With dead ends: 70 [2018-10-04 12:45:48,916 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 12:45:48,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 64 [2018-10-04 12:45:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 12:45:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 12:45:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 12:45:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 12:45:48,921 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 12:45:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:48,921 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 12:45:48,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:45:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 12:45:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 12:45:48,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:48,922 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 12:45:48,922 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:48,922 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-04 12:45:48,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:48,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:48,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:48,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:48,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:48,931 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:48,931 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:48,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:45:48,945 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:49,161 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:49,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:49,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:49,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:50,215 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:50,978 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:51,942 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 12:45:51,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:51,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-04 12:45:51,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:45:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:45:51,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:51,964 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 12:45:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:55,046 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 12:45:55,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:45:55,047 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 12:45:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:55,048 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:45:55,048 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:45:55,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.5s impTime 65 [2018-10-04 12:45:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:45:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:45:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:45:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 12:45:55,053 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 12:45:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:55,053 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 12:45:55,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:45:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 12:45:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:45:55,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:55,054 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 12:45:55,054 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:55,054 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-04 12:45:55,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:55,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:55,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:55,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:55,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:55,062 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:45:55,063 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:45:55,063 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 12:45:55,078 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:55,345 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 12:45:55,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:55,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:55,605 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:45:56,120 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:45:56,908 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:45:57,967 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 12:45:57,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:45:57,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-04 12:45:57,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:45:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:45:57,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:57,988 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 12:46:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:01,137 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 12:46:01,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:46:01,138 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 12:46:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:01,139 INFO L225 Difference]: With dead ends: 72 [2018-10-04 12:46:01,139 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 12:46:01,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime 66 [2018-10-04 12:46:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 12:46:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 12:46:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 12:46:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 12:46:01,142 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 12:46:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:01,142 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 12:46:01,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:46:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 12:46:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 12:46:01,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:01,143 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 12:46:01,143 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:01,143 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:01,143 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-04 12:46:01,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:01,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:01,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:01,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:01,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:01,151 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:46:01,151 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:46:01,151 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 12:46:01,165 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:46:04,526 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 12:46:04,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:04,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:04,794 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:46:06,691 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:46:07,458 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:46:08,581 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 12:46:08,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:46:08,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-04 12:46:08,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:46:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:46:08,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:08,602 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 12:46:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:11,841 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 12:46:11,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:46:11,842 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 12:46:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:11,843 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:46:11,843 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:46:11,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.7s impTime 67 [2018-10-04 12:46:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:46:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:46:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:46:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:46:11,848 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 12:46:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:11,848 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:46:11,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:46:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:46:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:46:11,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:11,849 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 12:46:11,849 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:11,850 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:11,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-04 12:46:11,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:11,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:11,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:11,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:11,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:11,857 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:46:11,858 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:46:11,858 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 12:46:11,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:12,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:12,620 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:46:13,275 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:46:14,038 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:46:15,449 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 12:46:15,466 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 12:46:15,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:46:15,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-04 12:46:15,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:46:15,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:46:15,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:15,487 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 12:46:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:18,676 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 12:46:18,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:46:18,677 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 12:46:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:18,678 INFO L225 Difference]: With dead ends: 74 [2018-10-04 12:46:18,678 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 12:46:18,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.8s impTime 68 [2018-10-04 12:46:18,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 12:46:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 12:46:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 12:46:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 12:46:18,681 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 12:46:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:18,682 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 12:46:18,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:46:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 12:46:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 12:46:18,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:18,682 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 12:46:18,682 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:18,682 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-04 12:46:18,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:18,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:18,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:18,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:18,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:18,689 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:46:18,689 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:46:18,689 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:18,702 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:18,911 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:18,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:18,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:19,243 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:46:19,773 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:46:20,755 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:46:21,990 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 12:46:22,083 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 12:46:22,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:46:22,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-04 12:46:22,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:46:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:46:22,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:22,104 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 12:46:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:25,505 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 12:46:25,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:46:25,506 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 12:46:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:25,506 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:46:25,506 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:46:25,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.8s impTime 69 [2018-10-04 12:46:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:46:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:46:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:46:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 12:46:25,511 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 12:46:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:25,511 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 12:46:25,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:46:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 12:46:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:46:25,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:25,512 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 12:46:25,512 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:25,513 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-04 12:46:25,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:25,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:25,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:25,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:25,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:25,521 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:46:25,521 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:46:25,521 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) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:46:25,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:45,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 12:46:45,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:45,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:46,085 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:46:46,648 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:46:47,409 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:46:48,651 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 12:46:48,819 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 12:46:48,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:46:48,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-04 12:46:48,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:46:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:46:48,840 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:48,840 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 12:46:52,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:52,849 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 12:46:52,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:46:52,849 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 12:46:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:52,850 INFO L225 Difference]: With dead ends: 76 [2018-10-04 12:46:52,850 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 12:46:52,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 70 [2018-10-04 12:46:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 12:46:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 12:46:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 12:46:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 12:46:52,855 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 12:46:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:52,856 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 12:46:52,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:46:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 12:46:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 12:46:52,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:52,856 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 12:46:52,857 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:52,857 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-04 12:46:52,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:52,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:52,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:52,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:52,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:52,866 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:46:52,866 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:46:52,866 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 12:46:52,880 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:53,137 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:53,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:53,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:53,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:46:53,976 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:46:54,775 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:46:56,161 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 12:46:56,618 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 12:46:56,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:46:56,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-04 12:46:56,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:46:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:46:56,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:56,640 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 12:47:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:00,253 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 12:47:00,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:47:00,253 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 12:47:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:00,254 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:47:00,254 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:47:00,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.0s impTime 71 [2018-10-04 12:47:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:47:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:47:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:47:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:47:00,259 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 12:47:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:00,260 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:47:00,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:47:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:47:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:47:00,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:00,260 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 12:47:00,261 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:00,261 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:00,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-04 12:47:00,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:00,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:00,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:00,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,269 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:47:00,269 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:47:00,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:00,283 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:00,738 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 12:47:00,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:00,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:01,014 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:01,809 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 12:47:02,592 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 12:47:03,880 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 12:47:04,220 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 12:47:04,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:47:04,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-04 12:47:04,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:47:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:47:04,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:04,241 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. Received shutdown request... [2018-10-04 12:47:04,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:47:04,859 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:47:04,866 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:47:04,866 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 12:47:04 BoogieIcfgContainer [2018-10-04 12:47:04,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:47:04,867 INFO L168 Benchmark]: Toolchain (without parser) took 255385.80 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 45.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 219.9 MB). Peak memory consumption was 264.9 MB. Max. memory is 7.1 GB. [2018-10-04 12:47:04,869 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:47:04,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:47:04,870 INFO L168 Benchmark]: Boogie Preprocessor took 20.44 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:47:04,870 INFO L168 Benchmark]: RCFGBuilder took 326.20 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:47:04,871 INFO L168 Benchmark]: TraceAbstraction took 254999.40 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 45.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 198.7 MB). Peak memory consumption was 243.8 MB. Max. memory is 7.1 GB. [2018-10-04 12:47:04,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.44 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 326.20 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254999.40 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 45.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 198.7 MB). Peak memory consumption was 243.8 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 15 states, 74 states before enhancement), while ReachableStatesComputation was computing reachable states (13 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 254.9s OverallTime, 72 OverallIterations, 71 TraceHistogramMax, 92.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 0 SDslu, 2556 SDs, 0 SdLazy, 127883 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2700 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.6s 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, 62.6s SatisfiabilityAnalysisTime, 95.3s 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_12-47-04-886.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_12-47-04-886.csv Completed graceful shutdown