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.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 10:04:21,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:04:21,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:04:21,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:04:21,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:04:21,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:04:21,321 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:04:21,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:04:21,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:04:21,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:04:21,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-28 10:04:21,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-28 10:04:21,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-28 10:04:21,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-28 10:04:21,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-28 10:04:21,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-28 10:04:21,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-28 10:04:21,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-28 10:04:21,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-28 10:04:21,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-28 10:04:21,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-28 10:04:21,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-28 10:04:21,345 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-28 10:04:21,345 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-28 10:04:21,346 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-28 10:04:21,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-28 10:04:21,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-28 10:04:21,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-28 10:04:21,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-28 10:04:21,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-28 10:04:21,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-28 10:04:21,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-28 10:04:21,355 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-28 10:04:21,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-28 10:04:21,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-28 10:04:21,357 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-28 10:04:21,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-28 10:04:21,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:04:21,377 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:04:21,378 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:04:21,382 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:04:21,382 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:04:21,383 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:04:21,383 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:04:21,383 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:04:21,383 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:04:21,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:04:21,384 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:04:21,384 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:04:21,384 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:04:21,384 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:04:21,386 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:04:21,386 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:04:21,386 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:04:21,386 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:04:21,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:04:21,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:04:21,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:04:21,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:04:21,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:04:21,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:04:21,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:04:21,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:04:21,390 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:04:21,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:04:21,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:04:21,390 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:04:21,465 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:04:21,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:04:21,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:04:21,492 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:04:21,493 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:04:21,493 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl [2018-09-28 10:04:21,494 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl' [2018-09-28 10:04:21,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:04:21,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:04:21,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:04:21,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:04:21,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:04:21,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:04:21,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:04:21,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:04:21,589 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:04:21,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... [2018-09-28 10:04:21,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:04:21,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:04:21,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:04:21,610 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:04:21,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:04:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-28 10:04:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-28 10:04:21,945 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-28 10:04:21,946 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:04:21 BoogieIcfgContainer [2018-09-28 10:04:21,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:04:21,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:04:21,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:04:21,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:04:21,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:04:21" (1/2) ... [2018-09-28 10:04:21,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d182cc and model type gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:04:21, skipping insertion in model container [2018-09-28 10:04:21,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:04:21" (2/2) ... [2018-09-28 10:04:21,956 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bpl [2018-09-28 10:04:21,966 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:04:21,975 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:04:22,019 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:04:22,020 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:04:22,020 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:04:22,020 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:04:22,020 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:04:22,021 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:04:22,021 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:04:22,021 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:04:22,021 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:04:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-28 10:04:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-28 10:04:22,040 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:22,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-28 10:04:22,042 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:22,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-28 10:04:22,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:22,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:22,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:22,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,136 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:22,136 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:22,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:22,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:22,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:22,336 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:04:22,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:04:22,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:04:22,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:04:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-28 10:04:22,361 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-28 10:04:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:22,405 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-28 10:04:22,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:04:22,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-28 10:04:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:22,419 INFO L225 Difference]: With dead ends: 11 [2018-09-28 10:04:22,419 INFO L226 Difference]: Without dead ends: 7 [2018-09-28 10:04:22,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-28 10:04:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-28 10:04:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-28 10:04:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-28 10:04:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-28 10:04:22,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-28 10:04:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:22,469 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-28 10:04:22,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:04:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-28 10:04:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-28 10:04:22,470 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:22,470 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-28 10:04:22,470 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:22,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-28 10:04:22,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:22,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,481 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:22,481 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:22,481 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 [2018-09-28 10:04:22,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:22,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:22,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:22,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-09-28 10:04:22,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-28 10:04:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-28 10:04:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-28 10:04:22,651 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-09-28 10:04:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:22,693 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-28 10:04:22,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-28 10:04:22,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-28 10:04:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:22,695 INFO L225 Difference]: With dead ends: 11 [2018-09-28 10:04:22,695 INFO L226 Difference]: Without dead ends: 9 [2018-09-28 10:04:22,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-28 10:04:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-28 10:04:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-28 10:04:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-28 10:04:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-28 10:04:22,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-28 10:04:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:22,704 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-28 10:04:22,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-28 10:04:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-28 10:04:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 10:04:22,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:22,705 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-28 10:04:22,705 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:22,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-28 10:04:22,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:22,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:22,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:22,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,720 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:22,721 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:22,721 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 [2018-09-28 10:04:22,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:04:22,766 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:22,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:22,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:22,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:22,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-09-28 10:04:22,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:04:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:04:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-28 10:04:22,898 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-09-28 10:04:22,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:22,974 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-28 10:04:22,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:04:22,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-28 10:04:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:22,976 INFO L225 Difference]: With dead ends: 13 [2018-09-28 10:04:22,976 INFO L226 Difference]: Without dead ends: 11 [2018-09-28 10:04:22,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-28 10:04:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-28 10:04:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-28 10:04:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-28 10:04:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-28 10:04:22,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-28 10:04:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:22,982 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-28 10:04:22,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:04:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-28 10:04:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:04:22,983 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:22,983 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-28 10:04:22,983 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:22,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:22,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-28 10:04:22,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:22,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:22,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:22,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:22,994 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:22,994 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:22,994 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 [2018-09-28 10:04:23,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:23,017 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-28 10:04:23,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:23,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:23,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:23,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-09-28 10:04:23,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 10:04:23,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 10:04:23,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-28 10:04:23,295 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-09-28 10:04:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:23,450 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-28 10:04:23,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:04:23,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-09-28 10:04:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:23,452 INFO L225 Difference]: With dead ends: 15 [2018-09-28 10:04:23,452 INFO L226 Difference]: Without dead ends: 13 [2018-09-28 10:04:23,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-28 10:04:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-28 10:04:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-28 10:04:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-28 10:04:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-28 10:04:23,461 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-28 10:04:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:23,462 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-28 10:04:23,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 10:04:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-28 10:04:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-28 10:04:23,464 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:23,464 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-09-28 10:04:23,465 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:23,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:23,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-09-28 10:04:23,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:23,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:23,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:23,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:23,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:23,482 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:23,482 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:23,482 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:23,496 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:04:23,541 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:23,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:23,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:23,776 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:23,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-09-28 10:04:23,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:04:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:04:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-28 10:04:23,778 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-09-28 10:04:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:23,880 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-28 10:04:23,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:04:23,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-09-28 10:04:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:23,882 INFO L225 Difference]: With dead ends: 17 [2018-09-28 10:04:23,882 INFO L226 Difference]: Without dead ends: 15 [2018-09-28 10:04:23,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-28 10:04:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-28 10:04:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-28 10:04:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-28 10:04:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-28 10:04:23,887 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-09-28 10:04:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:23,888 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-28 10:04:23,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:04:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-28 10:04:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-28 10:04:23,888 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:23,889 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-09-28 10:04:23,889 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:23,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-09-28 10:04:23,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:23,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:23,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:23,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:23,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:23,899 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:23,899 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:23,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:23,909 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:23,925 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-28 10:04:23,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:23,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:24,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:24,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-09-28 10:04:24,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:04:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:04:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-28 10:04:24,086 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-09-28 10:04:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:24,387 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-28 10:04:24,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-28 10:04:24,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-09-28 10:04:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:24,389 INFO L225 Difference]: With dead ends: 19 [2018-09-28 10:04:24,389 INFO L226 Difference]: Without dead ends: 17 [2018-09-28 10:04:24,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-28 10:04:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-28 10:04:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-28 10:04:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-28 10:04:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-28 10:04:24,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-09-28 10:04:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:24,395 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-28 10:04:24,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:04:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-28 10:04:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:04:24,396 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:24,396 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-09-28 10:04:24,397 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:24,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-09-28 10:04:24,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:24,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:24,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:24,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:24,408 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:24,409 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:24,409 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 [2018-09-28 10:04:24,427 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:04:24,448 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-28 10:04:24,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:24,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:24,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:24,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-09-28 10:04:24,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:04:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:04:24,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-28 10:04:24,650 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-09-28 10:04:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:24,795 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-28 10:04:24,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-28 10:04:24,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-09-28 10:04:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:24,800 INFO L225 Difference]: With dead ends: 21 [2018-09-28 10:04:24,800 INFO L226 Difference]: Without dead ends: 19 [2018-09-28 10:04:24,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-28 10:04:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-28 10:04:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-28 10:04:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-28 10:04:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-28 10:04:24,806 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-09-28 10:04:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:24,807 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-28 10:04:24,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:04:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-28 10:04:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:04:24,808 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:24,808 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-09-28 10:04:24,808 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:24,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-09-28 10:04:24,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:24,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:24,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:24,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:24,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:24,820 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:24,820 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:24,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:24,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:24,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:25,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:25,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-09-28 10:04:25,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:04:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:04:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-28 10:04:25,096 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-09-28 10:04:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:25,205 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-28 10:04:25,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-28 10:04:25,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-28 10:04:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:25,207 INFO L225 Difference]: With dead ends: 23 [2018-09-28 10:04:25,208 INFO L226 Difference]: Without dead ends: 21 [2018-09-28 10:04:25,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-28 10:04:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-28 10:04:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-28 10:04:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-28 10:04:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-28 10:04:25,213 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-09-28 10:04:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:25,214 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-28 10:04:25,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:04:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-28 10:04:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:04:25,215 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:25,215 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-09-28 10:04:25,215 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:25,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-09-28 10:04:25,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:25,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:25,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:25,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:25,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:25,228 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:25,228 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:25,228 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 [2018-09-28 10:04:25,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:04:25,264 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:25,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:25,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:25,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:25,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-09-28 10:04:25,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:04:25,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:04:25,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-28 10:04:25,498 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-09-28 10:04:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:25,677 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-28 10:04:25,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-28 10:04:25,677 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-09-28 10:04:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:25,678 INFO L225 Difference]: With dead ends: 25 [2018-09-28 10:04:25,678 INFO L226 Difference]: Without dead ends: 23 [2018-09-28 10:04:25,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-28 10:04:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-28 10:04:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-28 10:04:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-28 10:04:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-28 10:04:25,685 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-09-28 10:04:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:25,685 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-28 10:04:25,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:04:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-28 10:04:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-28 10:04:25,686 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:25,686 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-09-28 10:04:25,686 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:25,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-09-28 10:04:25,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:25,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:25,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:25,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:25,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:25,699 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:25,699 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:25,699 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 [2018-09-28 10:04:25,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:25,731 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-28 10:04:25,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:25,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:25,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:25,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-09-28 10:04:25,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-28 10:04:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-28 10:04:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-09-28 10:04:25,971 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-09-28 10:04:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:26,136 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-28 10:04:26,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:04:26,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-09-28 10:04:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:26,138 INFO L225 Difference]: With dead ends: 27 [2018-09-28 10:04:26,138 INFO L226 Difference]: Without dead ends: 25 [2018-09-28 10:04:26,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-09-28 10:04:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-28 10:04:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-28 10:04:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-28 10:04:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-09-28 10:04:26,145 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-09-28 10:04:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:26,145 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-09-28 10:04:26,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-28 10:04:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-09-28 10:04:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-28 10:04:26,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:26,146 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-09-28 10:04:26,147 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:26,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-09-28 10:04:26,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:26,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:26,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:26,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:26,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:26,159 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:26,159 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:26,159 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 [2018-09-28 10:04:26,173 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:04:26,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:26,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:26,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:26,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:26,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-09-28 10:04:26,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:04:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:04:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-09-28 10:04:26,522 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-09-28 10:04:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:26,799 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-28 10:04:26,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:04:26,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-09-28 10:04:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:26,801 INFO L225 Difference]: With dead ends: 29 [2018-09-28 10:04:26,801 INFO L226 Difference]: Without dead ends: 27 [2018-09-28 10:04:26,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-09-28 10:04:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-28 10:04:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-28 10:04:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-28 10:04:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-28 10:04:26,808 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-09-28 10:04:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:26,808 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-28 10:04:26,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:04:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-28 10:04:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-28 10:04:26,810 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:26,810 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-09-28 10:04:26,810 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:26,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-09-28 10:04:26,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:26,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:26,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:26,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:26,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:26,824 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:26,824 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:26,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:26,837 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:26,866 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-28 10:04:26,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:26,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:27,279 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:27,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-09-28 10:04:27,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:04:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:04:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-28 10:04:27,281 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-09-28 10:04:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:27,487 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-28 10:04:27,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:04:27,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-09-28 10:04:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:27,489 INFO L225 Difference]: With dead ends: 31 [2018-09-28 10:04:27,489 INFO L226 Difference]: Without dead ends: 29 [2018-09-28 10:04:27,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-28 10:04:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-28 10:04:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-28 10:04:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-28 10:04:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-09-28 10:04:27,497 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-09-28 10:04:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:27,497 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-09-28 10:04:27,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:04:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-09-28 10:04:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-28 10:04:27,498 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:27,498 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-09-28 10:04:27,499 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:27,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-09-28 10:04:27,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:27,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:27,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:27,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:27,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:27,510 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:27,511 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:27,511 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:27,524 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:04:27,556 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-28 10:04:27,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:27,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:27,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:27,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-09-28 10:04:27,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:04:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:04:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-28 10:04:27,857 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-09-28 10:04:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:28,264 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-28 10:04:28,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-28 10:04:28,264 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-09-28 10:04:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:28,265 INFO L225 Difference]: With dead ends: 33 [2018-09-28 10:04:28,265 INFO L226 Difference]: Without dead ends: 31 [2018-09-28 10:04:28,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-28 10:04:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-28 10:04:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-28 10:04:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-28 10:04:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-28 10:04:28,273 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-09-28 10:04:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:28,273 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-28 10:04:28,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:04:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-28 10:04:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-28 10:04:28,274 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:28,274 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-09-28 10:04:28,274 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:28,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-09-28 10:04:28,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:28,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:28,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:28,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:28,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:28,285 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:28,285 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:28,286 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 [2018-09-28 10:04:28,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:28,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:29,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:29,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-09-28 10:04:29,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:04:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:04:29,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-09-28 10:04:29,670 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-09-28 10:04:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:29,947 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-09-28 10:04:29,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-28 10:04:29,947 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-09-28 10:04:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:29,948 INFO L225 Difference]: With dead ends: 35 [2018-09-28 10:04:29,948 INFO L226 Difference]: Without dead ends: 33 [2018-09-28 10:04:29,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-09-28 10:04:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-28 10:04:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-28 10:04:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-28 10:04:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-09-28 10:04:29,956 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-09-28 10:04:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:29,956 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-09-28 10:04:29,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:04:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-09-28 10:04:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-28 10:04:29,958 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:29,958 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-09-28 10:04:29,958 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:29,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-09-28 10:04:29,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:29,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:29,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:29,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:29,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:29,970 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:29,970 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:29,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-09-28 10:04:29,991 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:04:30,020 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:30,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:30,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:30,443 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:30,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-09-28 10:04:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:04:30,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:04:30,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-09-28 10:04:30,444 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-09-28 10:04:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:30,762 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-28 10:04:30,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:04:30,762 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-09-28 10:04:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:30,763 INFO L225 Difference]: With dead ends: 37 [2018-09-28 10:04:30,764 INFO L226 Difference]: Without dead ends: 35 [2018-09-28 10:04:30,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-09-28 10:04:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-28 10:04:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-28 10:04:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-28 10:04:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-28 10:04:30,771 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-09-28 10:04:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:30,771 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-28 10:04:30,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:04:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-28 10:04:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-28 10:04:30,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:30,772 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-09-28 10:04:30,772 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:30,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-09-28 10:04:30,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:30,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:30,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:30,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:30,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:30,785 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:30,785 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:30,785 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 [2018-09-28 10:04:30,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:30,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-28 10:04:30,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:30,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:31,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:31,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-09-28 10:04:31,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-28 10:04:31,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-28 10:04:31,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-09-28 10:04:31,231 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-09-28 10:04:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:31,462 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-09-28 10:04:31,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:04:31,472 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-09-28 10:04:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:31,472 INFO L225 Difference]: With dead ends: 39 [2018-09-28 10:04:31,472 INFO L226 Difference]: Without dead ends: 37 [2018-09-28 10:04:31,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-09-28 10:04:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-28 10:04:31,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-28 10:04:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-28 10:04:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-09-28 10:04:31,479 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-09-28 10:04:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:31,479 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-09-28 10:04:31,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-28 10:04:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-09-28 10:04:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-28 10:04:31,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:31,480 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-09-28 10:04:31,480 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:31,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:31,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-09-28 10:04:31,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:31,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:31,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:31,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:31,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:31,492 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:31,492 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:31,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:04:31,512 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:04:31,539 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:31,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:31,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:31,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:31,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-09-28 10:04:31,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-28 10:04:31,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-28 10:04:31,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-09-28 10:04:31,874 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-09-28 10:04:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:32,134 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-28 10:04:32,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-28 10:04:32,141 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-09-28 10:04:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:32,141 INFO L225 Difference]: With dead ends: 41 [2018-09-28 10:04:32,141 INFO L226 Difference]: Without dead ends: 39 [2018-09-28 10:04:32,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-09-28 10:04:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-28 10:04:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-28 10:04:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-28 10:04:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-28 10:04:32,148 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-09-28 10:04:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:32,148 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-28 10:04:32,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-28 10:04:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-28 10:04:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-28 10:04:32,149 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:32,149 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-09-28 10:04:32,149 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:32,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-09-28 10:04:32,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:32,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:32,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:32,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:32,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:32,160 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:32,160 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:32,160 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 [2018-09-28 10:04:32,174 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:32,207 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-28 10:04:32,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:32,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:32,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:32,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-09-28 10:04:32,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:04:32,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:04:32,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-09-28 10:04:32,687 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-09-28 10:04:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:33,192 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-09-28 10:04:33,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-28 10:04:33,193 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-09-28 10:04:33,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:33,193 INFO L225 Difference]: With dead ends: 43 [2018-09-28 10:04:33,193 INFO L226 Difference]: Without dead ends: 41 [2018-09-28 10:04:33,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-09-28 10:04:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-28 10:04:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-28 10:04:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-28 10:04:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-09-28 10:04:33,203 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-09-28 10:04:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:33,203 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-09-28 10:04:33,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:04:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-09-28 10:04:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-28 10:04:33,204 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:33,204 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-09-28 10:04:33,205 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:33,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:33,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-09-28 10:04:33,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:33,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:33,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:33,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:33,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:33,229 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:33,229 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:33,229 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 [2018-09-28 10:04:33,243 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:04:33,298 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-28 10:04:33,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:33,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:33,664 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:33,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-09-28 10:04:33,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-28 10:04:33,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-28 10:04:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-09-28 10:04:33,665 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-09-28 10:04:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:34,379 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-28 10:04:34,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-28 10:04:34,381 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-09-28 10:04:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:34,382 INFO L225 Difference]: With dead ends: 45 [2018-09-28 10:04:34,382 INFO L226 Difference]: Without dead ends: 43 [2018-09-28 10:04:34,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-09-28 10:04:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-28 10:04:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-28 10:04:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-28 10:04:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-28 10:04:34,388 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-09-28 10:04:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:34,388 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-28 10:04:34,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-28 10:04:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-28 10:04:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-28 10:04:34,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:34,390 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-09-28 10:04:34,390 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:34,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-09-28 10:04:34,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:34,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:34,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:34,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:34,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:34,400 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:34,401 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:34,401 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 [2018-09-28 10:04:34,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:34,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:34,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:34,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-09-28 10:04:34,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-28 10:04:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-28 10:04:34,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-09-28 10:04:34,866 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-09-28 10:04:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:35,373 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-09-28 10:04:35,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-28 10:04:35,374 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-09-28 10:04:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:35,375 INFO L225 Difference]: With dead ends: 47 [2018-09-28 10:04:35,375 INFO L226 Difference]: Without dead ends: 45 [2018-09-28 10:04:35,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-09-28 10:04:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-28 10:04:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-28 10:04:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-28 10:04:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-09-28 10:04:35,385 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-09-28 10:04:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:35,385 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-09-28 10:04:35,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-28 10:04:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-09-28 10:04:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-28 10:04:35,386 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:35,386 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-09-28 10:04:35,387 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:35,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-09-28 10:04:35,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:35,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:35,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:35,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:35,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:35,397 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:35,397 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:35,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:35,418 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:04:35,451 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:35,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:35,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:35,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:35,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-09-28 10:04:35,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-28 10:04:35,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-28 10:04:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-09-28 10:04:35,801 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-09-28 10:04:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:36,212 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-28 10:04:36,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-28 10:04:36,212 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-09-28 10:04:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:36,213 INFO L225 Difference]: With dead ends: 49 [2018-09-28 10:04:36,213 INFO L226 Difference]: Without dead ends: 47 [2018-09-28 10:04:36,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-09-28 10:04:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-28 10:04:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-28 10:04:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-28 10:04:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-28 10:04:36,222 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-09-28 10:04:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:36,222 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-28 10:04:36,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-28 10:04:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-28 10:04:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-28 10:04:36,223 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:36,224 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-09-28 10:04:36,224 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:36,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-09-28 10:04:36,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:36,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:36,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:36,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:36,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:36,233 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:36,234 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:36,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:36,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:36,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-28 10:04:36,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:36,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:36,991 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:36,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-09-28 10:04:36,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-28 10:04:36,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-28 10:04:36,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-09-28 10:04:36,993 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-09-28 10:04:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:37,371 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-28 10:04:37,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:04:37,374 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-09-28 10:04:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:37,374 INFO L225 Difference]: With dead ends: 51 [2018-09-28 10:04:37,375 INFO L226 Difference]: Without dead ends: 49 [2018-09-28 10:04:37,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-09-28 10:04:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-28 10:04:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-28 10:04:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-28 10:04:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-09-28 10:04:37,380 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-09-28 10:04:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:37,380 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-09-28 10:04:37,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-28 10:04:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-09-28 10:04:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-28 10:04:37,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:37,381 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-09-28 10:04:37,381 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:37,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:37,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-09-28 10:04:37,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:37,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:37,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:37,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:37,390 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:37,390 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:37,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:37,413 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:04:37,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:37,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:37,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:38,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:38,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-09-28 10:04:38,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-28 10:04:38,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-28 10:04:38,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-09-28 10:04:38,120 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-09-28 10:04:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:38,546 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-28 10:04:38,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-28 10:04:38,546 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-09-28 10:04:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:38,547 INFO L225 Difference]: With dead ends: 53 [2018-09-28 10:04:38,548 INFO L226 Difference]: Without dead ends: 51 [2018-09-28 10:04:38,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-09-28 10:04:38,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-28 10:04:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-28 10:04:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-28 10:04:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-28 10:04:38,554 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-28 10:04:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:38,555 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-28 10:04:38,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-28 10:04:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-28 10:04:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-28 10:04:38,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:38,556 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-09-28 10:04:38,556 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:38,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:38,556 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-09-28 10:04:38,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:38,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:38,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:38,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:38,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:38,564 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:38,565 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:38,565 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 [2018-09-28 10:04:38,583 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:38,634 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-28 10:04:38,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:38,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:39,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:39,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-09-28 10:04:39,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-28 10:04:39,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-28 10:04:39,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-09-28 10:04:39,025 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-09-28 10:04:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:39,484 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-28 10:04:39,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-28 10:04:39,485 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-09-28 10:04:39,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:39,486 INFO L225 Difference]: With dead ends: 55 [2018-09-28 10:04:39,486 INFO L226 Difference]: Without dead ends: 53 [2018-09-28 10:04:39,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-09-28 10:04:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-28 10:04:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-28 10:04:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-28 10:04:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-09-28 10:04:39,492 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-09-28 10:04:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:39,492 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-09-28 10:04:39,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-28 10:04:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-09-28 10:04:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-28 10:04:39,492 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:39,492 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-09-28 10:04:39,493 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:39,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:39,493 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-09-28 10:04:39,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:39,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:39,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:39,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:39,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:39,501 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:39,501 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:39,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:39,514 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:04:39,605 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-28 10:04:39,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:39,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:40,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:40,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-09-28 10:04:40,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-28 10:04:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-28 10:04:40,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-09-28 10:04:40,120 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-09-28 10:04:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:40,718 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-28 10:04:40,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:04:40,718 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-09-28 10:04:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:40,719 INFO L225 Difference]: With dead ends: 57 [2018-09-28 10:04:40,719 INFO L226 Difference]: Without dead ends: 55 [2018-09-28 10:04:40,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-09-28 10:04:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-28 10:04:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-28 10:04:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-28 10:04:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-28 10:04:40,727 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-09-28 10:04:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:40,727 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-28 10:04:40,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-28 10:04:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-28 10:04:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-28 10:04:40,728 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:40,728 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-09-28 10:04:40,728 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:40,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:40,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-09-28 10:04:40,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:40,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:40,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:40,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:40,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:40,737 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:40,737 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:40,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:40,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:40,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:41,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:41,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-09-28 10:04:41,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-28 10:04:41,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-28 10:04:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-09-28 10:04:41,230 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-09-28 10:04:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:41,778 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-09-28 10:04:41,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-28 10:04:41,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-09-28 10:04:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:41,779 INFO L225 Difference]: With dead ends: 59 [2018-09-28 10:04:41,780 INFO L226 Difference]: Without dead ends: 57 [2018-09-28 10:04:41,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-09-28 10:04:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-28 10:04:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-28 10:04:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-28 10:04:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-09-28 10:04:41,786 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-09-28 10:04:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:41,786 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-09-28 10:04:41,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-28 10:04:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-09-28 10:04:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-28 10:04:41,786 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:41,787 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-09-28 10:04:41,787 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:41,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:41,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-09-28 10:04:41,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:41,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:41,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:41,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:41,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:41,795 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:41,795 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:41,795 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 [2018-09-28 10:04:41,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:04:41,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:41,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:41,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:42,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:42,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-09-28 10:04:42,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-28 10:04:42,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-28 10:04:42,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-09-28 10:04:42,352 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-09-28 10:04:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:43,146 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-28 10:04:43,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:04:43,147 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-09-28 10:04:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:43,148 INFO L225 Difference]: With dead ends: 61 [2018-09-28 10:04:43,148 INFO L226 Difference]: Without dead ends: 59 [2018-09-28 10:04:43,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-09-28 10:04:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-28 10:04:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-28 10:04:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-28 10:04:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-28 10:04:43,154 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-09-28 10:04:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:43,154 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-28 10:04:43,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-28 10:04:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-28 10:04:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-28 10:04:43,155 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:43,155 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-09-28 10:04:43,155 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:43,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-09-28 10:04:43,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:43,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:43,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:43,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:43,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:43,163 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:43,163 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:43,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:43,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:43,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-28 10:04:43,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:43,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:44,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:44,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-09-28 10:04:44,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-28 10:04:44,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-28 10:04:44,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-09-28 10:04:44,068 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-09-28 10:04:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:44,693 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-28 10:04:44,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-28 10:04:44,693 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-09-28 10:04:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:44,694 INFO L225 Difference]: With dead ends: 63 [2018-09-28 10:04:44,694 INFO L226 Difference]: Without dead ends: 61 [2018-09-28 10:04:44,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-09-28 10:04:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-28 10:04:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-28 10:04:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-28 10:04:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-28 10:04:44,701 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-09-28 10:04:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:44,702 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-28 10:04:44,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-28 10:04:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-28 10:04:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-28 10:04:44,702 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:44,703 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-09-28 10:04:44,703 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:44,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-09-28 10:04:44,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:44,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:44,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:44,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:44,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:44,710 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:44,710 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:44,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:44,725 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:04:44,779 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:44,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:44,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:45,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:45,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-09-28 10:04:45,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-28 10:04:45,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-28 10:04:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-09-28 10:04:45,320 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-09-28 10:04:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:46,013 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-28 10:04:46,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-28 10:04:46,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-09-28 10:04:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:46,014 INFO L225 Difference]: With dead ends: 65 [2018-09-28 10:04:46,014 INFO L226 Difference]: Without dead ends: 63 [2018-09-28 10:04:46,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-09-28 10:04:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-28 10:04:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-28 10:04:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-28 10:04:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-28 10:04:46,022 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-09-28 10:04:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:46,022 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-28 10:04:46,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-28 10:04:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-28 10:04:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-28 10:04:46,023 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:46,023 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-09-28 10:04:46,023 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:46,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-09-28 10:04:46,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:46,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:46,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:46,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:46,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:46,032 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:46,032 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:46,032 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 [2018-09-28 10:04:46,046 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:46,114 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-28 10:04:46,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:46,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:46,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:46,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-09-28 10:04:46,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-28 10:04:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-28 10:04:46,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-09-28 10:04:46,768 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-09-28 10:04:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:47,549 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-09-28 10:04:47,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-28 10:04:47,550 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-09-28 10:04:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:47,551 INFO L225 Difference]: With dead ends: 67 [2018-09-28 10:04:47,551 INFO L226 Difference]: Without dead ends: 65 [2018-09-28 10:04:47,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-09-28 10:04:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-28 10:04:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-28 10:04:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-28 10:04:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-09-28 10:04:47,558 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-09-28 10:04:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:47,558 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-09-28 10:04:47,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-28 10:04:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-09-28 10:04:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-28 10:04:47,559 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:47,559 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-09-28 10:04:47,560 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:47,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-09-28 10:04:47,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:47,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:47,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:47,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:47,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:47,567 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:47,567 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:47,568 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 [2018-09-28 10:04:47,584 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:04:47,918 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-28 10:04:47,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:47,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:48,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:48,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-09-28 10:04:48,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-28 10:04:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-28 10:04:48,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-09-28 10:04:48,693 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-09-28 10:04:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:49,506 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-28 10:04:49,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-28 10:04:49,507 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-09-28 10:04:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:49,508 INFO L225 Difference]: With dead ends: 69 [2018-09-28 10:04:49,508 INFO L226 Difference]: Without dead ends: 67 [2018-09-28 10:04:49,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-09-28 10:04:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-28 10:04:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-28 10:04:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-28 10:04:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-28 10:04:49,515 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-09-28 10:04:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:49,516 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-28 10:04:49,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-28 10:04:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-28 10:04:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-28 10:04:49,516 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:49,516 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-09-28 10:04:49,517 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:49,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:49,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-09-28 10:04:49,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:49,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:49,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:49,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:49,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:49,525 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:49,525 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:49,525 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 [2018-09-28 10:04:49,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:04:49,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:50,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:50,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-09-28 10:04:50,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-28 10:04:50,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-28 10:04:50,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-09-28 10:04:50,345 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-09-28 10:04:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:51,327 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-09-28 10:04:51,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-28 10:04:51,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-09-28 10:04:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:51,329 INFO L225 Difference]: With dead ends: 71 [2018-09-28 10:04:51,329 INFO L226 Difference]: Without dead ends: 69 [2018-09-28 10:04:51,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-09-28 10:04:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-28 10:04:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-28 10:04:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-28 10:04:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-09-28 10:04:51,335 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-09-28 10:04:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:51,336 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-09-28 10:04:51,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-28 10:04:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-09-28 10:04:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-28 10:04:51,336 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:51,336 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-09-28 10:04:51,336 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:51,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-09-28 10:04:51,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:51,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:51,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:51,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:04:51,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:51,344 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:51,344 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:51,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:51,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:04:51,434 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:04:51,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:51,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:53,201 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:53,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-09-28 10:04:53,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-28 10:04:53,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-28 10:04:53,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-09-28 10:04:53,203 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-09-28 10:04:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:54,110 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-28 10:04:54,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-28 10:04:54,110 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-09-28 10:04:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:54,111 INFO L225 Difference]: With dead ends: 73 [2018-09-28 10:04:54,111 INFO L226 Difference]: Without dead ends: 71 [2018-09-28 10:04:54,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-09-28 10:04:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-28 10:04:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-28 10:04:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-28 10:04:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-28 10:04:54,118 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-09-28 10:04:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:54,118 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-28 10:04:54,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-28 10:04:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-28 10:04:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-28 10:04:54,119 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:54,119 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-09-28 10:04:54,119 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:54,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:54,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-09-28 10:04:54,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:54,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:54,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:54,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:54,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:54,127 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:54,127 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:54,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:04:54,135 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:04:54,843 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-28 10:04:54,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:54,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:55,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:55,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-09-28 10:04:55,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-28 10:04:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-28 10:04:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-09-28 10:04:55,690 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-09-28 10:04:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:56,556 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-09-28 10:04:56,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-28 10:04:56,556 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-09-28 10:04:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:56,557 INFO L225 Difference]: With dead ends: 75 [2018-09-28 10:04:56,558 INFO L226 Difference]: Without dead ends: 73 [2018-09-28 10:04:56,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-09-28 10:04:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-28 10:04:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-28 10:04:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-28 10:04:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-09-28 10:04:56,563 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-09-28 10:04:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:56,564 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-09-28 10:04:56,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-28 10:04:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-09-28 10:04:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-28 10:04:56,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:56,565 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-09-28 10:04:56,565 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:56,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-09-28 10:04:56,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:56,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:56,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:56,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:56,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:56,572 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:56,572 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:56,572 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) [2018-09-28 10:04:56,587 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:04:56,665 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:04:56,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:56,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:04:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:04:57,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:04:57,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-09-28 10:04:57,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-28 10:04:57,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-28 10:04:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-09-28 10:04:57,606 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-09-28 10:04:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:04:58,675 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-28 10:04:58,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-28 10:04:58,676 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-09-28 10:04:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:04:58,677 INFO L225 Difference]: With dead ends: 77 [2018-09-28 10:04:58,677 INFO L226 Difference]: Without dead ends: 75 [2018-09-28 10:04:58,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-09-28 10:04:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-28 10:04:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-28 10:04:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-28 10:04:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-28 10:04:58,684 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-09-28 10:04:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:04:58,684 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-28 10:04:58,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-28 10:04:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-28 10:04:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-28 10:04:58,685 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:04:58,685 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-09-28 10:04:58,685 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:04:58,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:04:58,686 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-09-28 10:04:58,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:04:58,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:04:58,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:58,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:04:58,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:04:58,693 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:04:58,693 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:04:58,693 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 [2018-09-28 10:04:58,702 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:04:58,793 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-28 10:04:58,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:04:58,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:00,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:00,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-09-28 10:05:00,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-28 10:05:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-28 10:05:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-09-28 10:05:00,109 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-09-28 10:05:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:01,065 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-28 10:05:01,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-28 10:05:01,065 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-09-28 10:05:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:01,066 INFO L225 Difference]: With dead ends: 79 [2018-09-28 10:05:01,067 INFO L226 Difference]: Without dead ends: 77 [2018-09-28 10:05:01,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-09-28 10:05:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-28 10:05:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-28 10:05:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-28 10:05:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-09-28 10:05:01,073 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-09-28 10:05:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:01,073 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-09-28 10:05:01,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-28 10:05:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-09-28 10:05:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-28 10:05:01,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:01,074 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-09-28 10:05:01,074 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:01,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:01,074 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-09-28 10:05:01,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:01,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:01,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:01,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:01,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:01,081 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:01,082 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:01,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:05:01,095 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:05:01,356 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-28 10:05:01,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:01,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:02,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:02,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-09-28 10:05:02,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-28 10:05:02,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-28 10:05:02,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-09-28 10:05:02,243 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-09-28 10:05:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:03,342 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-28 10:05:03,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:05:03,343 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-09-28 10:05:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:03,344 INFO L225 Difference]: With dead ends: 81 [2018-09-28 10:05:03,344 INFO L226 Difference]: Without dead ends: 79 [2018-09-28 10:05:03,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-09-28 10:05:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-28 10:05:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-28 10:05:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-28 10:05:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-28 10:05:03,351 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-09-28 10:05:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:03,351 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-28 10:05:03,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-28 10:05:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-28 10:05:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-28 10:05:03,352 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:03,352 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-09-28 10:05:03,352 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:03,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-09-28 10:05:03,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:03,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:03,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:03,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:03,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:03,360 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:03,360 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:03,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:05:03,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:05:03,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:04,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:04,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-09-28 10:05:04,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-28 10:05:04,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-28 10:05:04,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-09-28 10:05:04,277 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-09-28 10:05:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:05,355 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-09-28 10:05:05,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-28 10:05:05,355 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-09-28 10:05:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:05,356 INFO L225 Difference]: With dead ends: 83 [2018-09-28 10:05:05,357 INFO L226 Difference]: Without dead ends: 81 [2018-09-28 10:05:05,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-09-28 10:05:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-28 10:05:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-28 10:05:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-28 10:05:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-28 10:05:05,363 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-09-28 10:05:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:05,363 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-28 10:05:05,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-28 10:05:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-28 10:05:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-28 10:05:05,364 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:05,364 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-09-28 10:05:05,364 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:05,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-09-28 10:05:05,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:05,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:05,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:05,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:05,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:05,372 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:05,372 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:05,372 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 [2018-09-28 10:05:05,387 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:05:05,472 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:05:05,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:05,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:06,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:06,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-09-28 10:05:06,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-28 10:05:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-28 10:05:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-09-28 10:05:06,895 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-09-28 10:05:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:07,987 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-28 10:05:07,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-28 10:05:07,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-09-28 10:05:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:07,988 INFO L225 Difference]: With dead ends: 85 [2018-09-28 10:05:07,989 INFO L226 Difference]: Without dead ends: 83 [2018-09-28 10:05:07,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-09-28 10:05:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-28 10:05:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-28 10:05:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-28 10:05:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-28 10:05:07,996 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-09-28 10:05:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:07,996 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-28 10:05:07,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-28 10:05:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-28 10:05:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-28 10:05:07,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:07,997 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-09-28 10:05:07,997 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:07,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-09-28 10:05:07,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:07,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:07,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:07,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:07,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:08,005 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:08,006 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:08,006 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) [2018-09-28 10:05:08,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:05:09,431 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-28 10:05:09,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:09,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:10,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:10,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-09-28 10:05:10,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-28 10:05:10,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-28 10:05:10,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-09-28 10:05:10,390 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-09-28 10:05:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:11,608 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-28 10:05:11,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-28 10:05:11,609 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-09-28 10:05:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:11,610 INFO L225 Difference]: With dead ends: 87 [2018-09-28 10:05:11,610 INFO L226 Difference]: Without dead ends: 85 [2018-09-28 10:05:11,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-09-28 10:05:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-28 10:05:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-28 10:05:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-28 10:05:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-09-28 10:05:11,617 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-09-28 10:05:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:11,618 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-09-28 10:05:11,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-28 10:05:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-09-28 10:05:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-28 10:05:11,618 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:11,618 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-09-28 10:05:11,618 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:11,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-09-28 10:05:11,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:11,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:11,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:11,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:11,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:11,627 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:11,627 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:11,627 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 [2018-09-28 10:05:11,642 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:05:11,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:05:11,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:11,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:12,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:12,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-09-28 10:05:12,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-28 10:05:12,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-28 10:05:12,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-09-28 10:05:12,785 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-09-28 10:05:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:14,161 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-28 10:05:14,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-28 10:05:14,161 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-09-28 10:05:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:14,162 INFO L225 Difference]: With dead ends: 89 [2018-09-28 10:05:14,162 INFO L226 Difference]: Without dead ends: 87 [2018-09-28 10:05:14,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-09-28 10:05:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-28 10:05:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-28 10:05:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-28 10:05:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-28 10:05:14,172 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-09-28 10:05:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:14,172 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-28 10:05:14,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-28 10:05:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-28 10:05:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-28 10:05:14,173 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:14,173 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-09-28 10:05:14,173 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:14,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-09-28 10:05:14,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:14,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:14,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:14,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:14,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:14,181 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:14,181 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:14,181 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 [2018-09-28 10:05:14,192 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:05:14,307 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-28 10:05:14,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:14,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:15,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:15,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-09-28 10:05:15,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-28 10:05:15,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-28 10:05:15,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-09-28 10:05:15,941 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-09-28 10:05:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:17,324 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-09-28 10:05:17,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-28 10:05:17,324 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-09-28 10:05:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:17,326 INFO L225 Difference]: With dead ends: 91 [2018-09-28 10:05:17,326 INFO L226 Difference]: Without dead ends: 89 [2018-09-28 10:05:17,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-09-28 10:05:17,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-28 10:05:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-28 10:05:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-28 10:05:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-09-28 10:05:17,335 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-09-28 10:05:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:17,336 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-09-28 10:05:17,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-28 10:05:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-09-28 10:05:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-28 10:05:17,337 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:17,337 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-09-28 10:05:17,337 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:17,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:17,337 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-09-28 10:05:17,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:17,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:17,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:17,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:17,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:17,346 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:17,346 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:17,347 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 [2018-09-28 10:05:17,362 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:05:17,696 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-28 10:05:17,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:17,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:19,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:19,016 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-09-28 10:05:19,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-28 10:05:19,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-28 10:05:19,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-09-28 10:05:19,017 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-09-28 10:05:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:20,459 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-28 10:05:20,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-28 10:05:20,460 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-09-28 10:05:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:20,461 INFO L225 Difference]: With dead ends: 93 [2018-09-28 10:05:20,461 INFO L226 Difference]: Without dead ends: 91 [2018-09-28 10:05:20,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-09-28 10:05:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-28 10:05:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-28 10:05:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-28 10:05:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-28 10:05:20,468 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-09-28 10:05:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:20,468 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-28 10:05:20,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-28 10:05:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-28 10:05:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-28 10:05:20,469 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:20,469 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-09-28 10:05:20,469 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:20,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:20,469 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-09-28 10:05:20,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:20,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:20,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:20,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:20,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:20,476 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:20,477 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:20,477 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 [2018-09-28 10:05:20,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:05:20,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:21,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:21,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-09-28 10:05:21,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-28 10:05:21,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-28 10:05:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-09-28 10:05:21,630 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-09-28 10:05:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:23,074 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-09-28 10:05:23,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-28 10:05:23,075 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-09-28 10:05:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:23,076 INFO L225 Difference]: With dead ends: 95 [2018-09-28 10:05:23,076 INFO L226 Difference]: Without dead ends: 93 [2018-09-28 10:05:23,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-09-28 10:05:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-28 10:05:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-28 10:05:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-28 10:05:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-09-28 10:05:23,082 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-09-28 10:05:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:23,083 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-09-28 10:05:23,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-28 10:05:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-09-28 10:05:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-28 10:05:23,083 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:23,083 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-09-28 10:05:23,084 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:23,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-09-28 10:05:23,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:23,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:23,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:23,091 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:23,091 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:23,091 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 [2018-09-28 10:05:23,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:05:23,212 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:05:23,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:23,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:24,649 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:24,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-09-28 10:05:24,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-28 10:05:24,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-28 10:05:24,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-09-28 10:05:24,650 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-09-28 10:05:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:26,132 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-28 10:05:26,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-28 10:05:26,132 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-09-28 10:05:26,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:26,133 INFO L225 Difference]: With dead ends: 97 [2018-09-28 10:05:26,133 INFO L226 Difference]: Without dead ends: 95 [2018-09-28 10:05:26,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-09-28 10:05:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-28 10:05:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-28 10:05:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-28 10:05:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-28 10:05:26,139 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-09-28 10:05:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:26,140 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-28 10:05:26,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-28 10:05:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-28 10:05:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-28 10:05:26,140 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:26,140 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-09-28 10:05:26,140 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:26,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-09-28 10:05:26,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:26,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:26,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:26,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:26,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:26,147 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:26,147 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:26,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:05:26,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:05:28,808 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-28 10:05:28,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:28,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:30,148 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:30,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-09-28 10:05:30,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-28 10:05:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-28 10:05:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-09-28 10:05:30,150 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-09-28 10:05:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:31,693 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-09-28 10:05:31,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-28 10:05:31,693 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-09-28 10:05:31,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:31,694 INFO L225 Difference]: With dead ends: 99 [2018-09-28 10:05:31,695 INFO L226 Difference]: Without dead ends: 97 [2018-09-28 10:05:31,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-09-28 10:05:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-28 10:05:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-28 10:05:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-28 10:05:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-09-28 10:05:31,701 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-09-28 10:05:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:31,701 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-09-28 10:05:31,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-28 10:05:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-09-28 10:05:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-28 10:05:31,702 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:31,702 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-09-28 10:05:31,702 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:31,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-09-28 10:05:31,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:31,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:31,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:31,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:31,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:31,709 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:31,709 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:31,709 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 [2018-09-28 10:05:31,724 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:05:31,854 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:05:31,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:31,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:33,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:33,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-09-28 10:05:33,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-28 10:05:33,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-28 10:05:33,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-09-28 10:05:33,132 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-09-28 10:05:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:34,918 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-28 10:05:34,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-28 10:05:34,918 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-09-28 10:05:34,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:34,919 INFO L225 Difference]: With dead ends: 101 [2018-09-28 10:05:34,919 INFO L226 Difference]: Without dead ends: 99 [2018-09-28 10:05:34,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-09-28 10:05:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-28 10:05:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-28 10:05:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-28 10:05:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-28 10:05:34,927 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-09-28 10:05:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:34,927 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-28 10:05:34,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-28 10:05:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-28 10:05:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-28 10:05:34,928 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:34,928 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-09-28 10:05:34,928 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:34,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-09-28 10:05:34,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:34,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:34,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:34,936 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:34,936 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:34,936 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 [2018-09-28 10:05:34,951 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:05:35,100 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-28 10:05:35,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:35,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:37,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:37,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-09-28 10:05:37,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-28 10:05:37,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-28 10:05:37,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-09-28 10:05:37,277 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-09-28 10:05:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:38,933 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-09-28 10:05:38,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-28 10:05:38,935 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-09-28 10:05:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:38,936 INFO L225 Difference]: With dead ends: 103 [2018-09-28 10:05:38,936 INFO L226 Difference]: Without dead ends: 101 [2018-09-28 10:05:38,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-09-28 10:05:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-28 10:05:38,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-28 10:05:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-28 10:05:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-09-28 10:05:38,947 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-09-28 10:05:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:38,947 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-09-28 10:05:38,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-28 10:05:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-09-28 10:05:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-28 10:05:38,948 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:38,948 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-09-28 10:05:38,948 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:38,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-09-28 10:05:38,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:38,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:38,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:38,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:38,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:38,958 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:38,958 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:38,958 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:05:38,972 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:05:41,138 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-28 10:05:41,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:41,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:42,402 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:42,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-09-28 10:05:42,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-28 10:05:42,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-28 10:05:42,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-09-28 10:05:42,403 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-09-28 10:05:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:44,226 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-28 10:05:44,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-28 10:05:44,226 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-09-28 10:05:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:44,227 INFO L225 Difference]: With dead ends: 105 [2018-09-28 10:05:44,227 INFO L226 Difference]: Without dead ends: 103 [2018-09-28 10:05:44,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-09-28 10:05:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-28 10:05:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-28 10:05:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-28 10:05:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-28 10:05:44,235 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-09-28 10:05:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:44,236 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-28 10:05:44,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-28 10:05:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-28 10:05:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-28 10:05:44,236 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:44,237 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-09-28 10:05:44,237 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:44,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-09-28 10:05:44,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:44,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:44,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:44,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:44,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:44,245 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:44,245 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:44,245 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 [2018-09-28 10:05:44,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:05:44,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:45,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:45,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-09-28 10:05:45,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-28 10:05:45,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-28 10:05:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-09-28 10:05:45,764 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-09-28 10:05:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:47,843 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-09-28 10:05:47,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-28 10:05:47,843 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-09-28 10:05:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:47,844 INFO L225 Difference]: With dead ends: 107 [2018-09-28 10:05:47,845 INFO L226 Difference]: Without dead ends: 105 [2018-09-28 10:05:47,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-09-28 10:05:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-28 10:05:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-28 10:05:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-28 10:05:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-09-28 10:05:47,853 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-09-28 10:05:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:47,853 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-09-28 10:05:47,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-28 10:05:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-09-28 10:05:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-28 10:05:47,854 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:47,854 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-09-28 10:05:47,855 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:47,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:47,855 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-09-28 10:05:47,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:47,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:47,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:47,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:05:47,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:47,863 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:47,863 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:47,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:05:47,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:05:47,994 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:05:47,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:47,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:49,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:49,811 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-09-28 10:05:49,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-28 10:05:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-28 10:05:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-09-28 10:05:49,812 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-09-28 10:05:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:51,721 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-28 10:05:51,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-28 10:05:51,722 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-09-28 10:05:51,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:51,722 INFO L225 Difference]: With dead ends: 109 [2018-09-28 10:05:51,723 INFO L226 Difference]: Without dead ends: 107 [2018-09-28 10:05:51,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-09-28 10:05:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-28 10:05:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-28 10:05:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-28 10:05:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-28 10:05:51,730 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-09-28 10:05:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:51,730 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-28 10:05:51,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-28 10:05:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-28 10:05:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-28 10:05:51,731 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:51,731 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-09-28 10:05:51,731 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:51,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:51,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-09-28 10:05:51,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:51,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:51,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:51,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:51,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:51,739 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:51,739 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:51,739 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 [2018-09-28 10:05:51,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:05:56,281 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-28 10:05:56,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:56,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:05:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:05:57,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:05:57,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-09-28 10:05:57,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-28 10:05:57,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-28 10:05:57,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-09-28 10:05:57,718 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-09-28 10:05:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:05:59,781 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-09-28 10:05:59,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-28 10:05:59,781 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-09-28 10:05:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:05:59,782 INFO L225 Difference]: With dead ends: 111 [2018-09-28 10:05:59,782 INFO L226 Difference]: Without dead ends: 109 [2018-09-28 10:05:59,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-09-28 10:05:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-28 10:05:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-28 10:05:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-28 10:05:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-09-28 10:05:59,790 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-09-28 10:05:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:05:59,790 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-09-28 10:05:59,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-28 10:05:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-09-28 10:05:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-28 10:05:59,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:05:59,791 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-09-28 10:05:59,792 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:05:59,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:05:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-09-28 10:05:59,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:05:59,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:05:59,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:59,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:05:59,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:05:59,800 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:05:59,801 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:05:59,801 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 [2018-09-28 10:05:59,812 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:05:59,982 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:05:59,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:05:59,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:01,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:01,703 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-09-28 10:06:01,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-28 10:06:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-28 10:06:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-09-28 10:06:01,705 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-09-28 10:06:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:03,756 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-28 10:06:03,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-28 10:06:03,756 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-09-28 10:06:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:03,757 INFO L225 Difference]: With dead ends: 113 [2018-09-28 10:06:03,757 INFO L226 Difference]: Without dead ends: 111 [2018-09-28 10:06:03,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-09-28 10:06:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-28 10:06:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-28 10:06:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-28 10:06:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-28 10:06:03,766 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-09-28 10:06:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:03,766 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-28 10:06:03,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-28 10:06:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-28 10:06:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-28 10:06:03,767 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:03,767 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-09-28 10:06:03,767 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:03,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-09-28 10:06:03,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:03,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:03,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:03,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:03,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:03,775 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:03,776 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:03,776 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 [2018-09-28 10:06:03,788 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:06:03,971 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-28 10:06:03,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:03,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:05,791 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:05,791 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-09-28 10:06:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-28 10:06:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-28 10:06:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-09-28 10:06:05,792 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-09-28 10:06:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:07,839 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-09-28 10:06:07,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-28 10:06:07,840 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-09-28 10:06:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:07,841 INFO L225 Difference]: With dead ends: 115 [2018-09-28 10:06:07,841 INFO L226 Difference]: Without dead ends: 113 [2018-09-28 10:06:07,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-09-28 10:06:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-28 10:06:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-28 10:06:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-28 10:06:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-09-28 10:06:07,847 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-09-28 10:06:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:07,847 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-09-28 10:06:07,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-28 10:06:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-09-28 10:06:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-28 10:06:07,847 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:07,848 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-09-28 10:06:07,848 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:07,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-09-28 10:06:07,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:07,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:07,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:07,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:07,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:07,855 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:07,855 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:07,855 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:06:07,870 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:06:10,132 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-28 10:06:10,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:10,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:11,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:11,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-09-28 10:06:11,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-28 10:06:11,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-28 10:06:11,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-09-28 10:06:11,734 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-09-28 10:06:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:14,156 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-28 10:06:14,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-28 10:06:14,156 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-09-28 10:06:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:14,158 INFO L225 Difference]: With dead ends: 117 [2018-09-28 10:06:14,158 INFO L226 Difference]: Without dead ends: 115 [2018-09-28 10:06:14,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-09-28 10:06:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-28 10:06:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-28 10:06:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-28 10:06:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-28 10:06:14,166 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-09-28 10:06:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:14,167 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-28 10:06:14,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-28 10:06:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-28 10:06:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-28 10:06:14,168 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:14,168 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-09-28 10:06:14,168 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:14,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-09-28 10:06:14,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:14,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:14,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:14,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:14,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:14,176 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:14,176 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:14,176 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) [2018-09-28 10:06:14,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:06:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:06:14,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:16,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:16,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-09-28 10:06:16,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-28 10:06:16,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-28 10:06:16,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-09-28 10:06:16,198 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-09-28 10:06:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:18,418 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-09-28 10:06:18,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-28 10:06:18,418 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-09-28 10:06:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:18,419 INFO L225 Difference]: With dead ends: 119 [2018-09-28 10:06:18,419 INFO L226 Difference]: Without dead ends: 117 [2018-09-28 10:06:18,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-09-28 10:06:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-28 10:06:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-28 10:06:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-28 10:06:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-09-28 10:06:18,428 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-09-28 10:06:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:18,428 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-09-28 10:06:18,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-28 10:06:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-09-28 10:06:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-28 10:06:18,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:18,429 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-09-28 10:06:18,429 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:18,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:18,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-09-28 10:06:18,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:18,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:18,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:18,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:06:18,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:18,438 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:18,438 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:18,438 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 [2018-09-28 10:06:18,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:06:18,593 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:06:18,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:18,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:20,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:20,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-09-28 10:06:20,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-28 10:06:20,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-28 10:06:20,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-09-28 10:06:20,880 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-09-28 10:06:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:23,189 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-28 10:06:23,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-28 10:06:23,189 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-09-28 10:06:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:23,191 INFO L225 Difference]: With dead ends: 121 [2018-09-28 10:06:23,191 INFO L226 Difference]: Without dead ends: 119 [2018-09-28 10:06:23,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-09-28 10:06:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-28 10:06:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-28 10:06:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-28 10:06:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-28 10:06:23,198 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-09-28 10:06:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:23,199 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-28 10:06:23,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-28 10:06:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-28 10:06:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-28 10:06:23,199 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:23,199 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-09-28 10:06:23,200 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:23,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-09-28 10:06:23,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:23,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:23,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:23,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:23,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:23,207 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:23,208 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:23,208 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 [2018-09-28 10:06:23,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:06:30,981 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-28 10:06:30,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:30,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:34,065 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:34,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-09-28 10:06:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-28 10:06:34,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-28 10:06:34,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-09-28 10:06:34,066 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-09-28 10:06:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:36,584 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-09-28 10:06:36,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-28 10:06:36,584 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-09-28 10:06:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:36,585 INFO L225 Difference]: With dead ends: 123 [2018-09-28 10:06:36,585 INFO L226 Difference]: Without dead ends: 121 [2018-09-28 10:06:36,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-09-28 10:06:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-28 10:06:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-28 10:06:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-28 10:06:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-09-28 10:06:36,593 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-09-28 10:06:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:36,593 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-09-28 10:06:36,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-28 10:06:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-09-28 10:06:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-28 10:06:36,594 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:36,594 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-09-28 10:06:36,594 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:36,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-09-28 10:06:36,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:36,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:36,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:36,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:36,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:36,602 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:36,602 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:36,602 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 [2018-09-28 10:06:36,614 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:06:36,761 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:06:36,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:36,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:38,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:38,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-09-28 10:06:38,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-28 10:06:38,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-28 10:06:38,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-09-28 10:06:38,619 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-09-28 10:06:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:41,222 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-28 10:06:41,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-28 10:06:41,222 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-09-28 10:06:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:41,223 INFO L225 Difference]: With dead ends: 125 [2018-09-28 10:06:41,223 INFO L226 Difference]: Without dead ends: 123 [2018-09-28 10:06:41,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-09-28 10:06:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-28 10:06:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-28 10:06:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-28 10:06:41,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-28 10:06:41,229 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-09-28 10:06:41,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:41,230 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-28 10:06:41,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-28 10:06:41,230 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-28 10:06:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-28 10:06:41,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:41,231 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-09-28 10:06:41,231 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:41,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-09-28 10:06:41,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:41,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:41,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:41,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:41,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:41,240 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:41,240 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:41,240 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 [2018-09-28 10:06:41,256 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:06:41,493 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-28 10:06:41,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:41,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:43,334 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:43,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-09-28 10:06:43,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-28 10:06:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-28 10:06:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-09-28 10:06:43,335 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-09-28 10:06:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:46,676 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-09-28 10:06:46,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-28 10:06:46,677 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-09-28 10:06:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:46,678 INFO L225 Difference]: With dead ends: 127 [2018-09-28 10:06:46,678 INFO L226 Difference]: Without dead ends: 125 [2018-09-28 10:06:46,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-09-28 10:06:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-28 10:06:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-28 10:06:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-28 10:06:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-09-28 10:06:46,684 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-09-28 10:06:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:46,685 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-09-28 10:06:46,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-28 10:06:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-09-28 10:06:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-28 10:06:46,685 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:46,685 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-09-28 10:06:46,686 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:46,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:46,686 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-09-28 10:06:46,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:46,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:46,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:46,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:46,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:46,693 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:46,694 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:46,694 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 [2018-09-28 10:06:46,704 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:06:48,248 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-28 10:06:48,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:48,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:50,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:50,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-09-28 10:06:50,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-28 10:06:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-28 10:06:50,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-09-28 10:06:50,126 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-09-28 10:06:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:52,884 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-28 10:06:52,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-28 10:06:52,884 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-09-28 10:06:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:52,886 INFO L225 Difference]: With dead ends: 129 [2018-09-28 10:06:52,886 INFO L226 Difference]: Without dead ends: 127 [2018-09-28 10:06:52,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-09-28 10:06:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-28 10:06:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-28 10:06:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-28 10:06:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-28 10:06:52,892 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-09-28 10:06:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:52,892 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-28 10:06:52,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-28 10:06:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-28 10:06:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-28 10:06:52,893 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:52,893 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-09-28 10:06:52,893 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:52,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-09-28 10:06:52,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:52,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:52,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:52,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:06:52,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:52,900 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:52,900 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:52,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:06:52,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:06:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:06:53,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:06:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:06:55,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:06:55,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-09-28 10:06:55,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-28 10:06:55,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-28 10:06:55,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-09-28 10:06:55,029 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-09-28 10:06:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:06:58,623 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-09-28 10:06:58,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-28 10:06:58,624 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-09-28 10:06:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:06:58,625 INFO L225 Difference]: With dead ends: 131 [2018-09-28 10:06:58,625 INFO L226 Difference]: Without dead ends: 129 [2018-09-28 10:06:58,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-09-28 10:06:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-28 10:06:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-28 10:06:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-28 10:06:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-09-28 10:06:58,631 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-09-28 10:06:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:06:58,631 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-09-28 10:06:58,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-28 10:06:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-09-28 10:06:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-28 10:06:58,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:06:58,632 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-09-28 10:06:58,632 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:06:58,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:06:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-09-28 10:06:58,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:06:58,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:06:58,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:58,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:06:58,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:06:58,639 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:06:58,640 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:06:58,640 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 [2018-09-28 10:06:58,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:06:58,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:06:58,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:06:58,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:00,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:00,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-09-28 10:07:00,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-28 10:07:00,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-28 10:07:00,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-09-28 10:07:00,830 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-09-28 10:07:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:04,637 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-28 10:07:04,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:07:04,637 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-09-28 10:07:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:04,639 INFO L225 Difference]: With dead ends: 133 [2018-09-28 10:07:04,639 INFO L226 Difference]: Without dead ends: 131 [2018-09-28 10:07:04,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-09-28 10:07:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-28 10:07:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-28 10:07:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-28 10:07:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-28 10:07:04,646 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-09-28 10:07:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:04,646 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-28 10:07:04,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-28 10:07:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-28 10:07:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-28 10:07:04,647 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:04,647 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-09-28 10:07:04,647 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:04,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:04,647 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-09-28 10:07:04,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:04,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:04,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:04,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:04,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:04,656 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:04,656 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:04,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:07:04,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:07:17,441 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-28 10:07:17,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:07:17,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:19,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:19,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-09-28 10:07:19,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-28 10:07:19,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-28 10:07:19,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-09-28 10:07:19,697 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-09-28 10:07:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:22,755 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-09-28 10:07:22,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-28 10:07:22,755 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-09-28 10:07:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:22,757 INFO L225 Difference]: With dead ends: 135 [2018-09-28 10:07:22,757 INFO L226 Difference]: Without dead ends: 133 [2018-09-28 10:07:22,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-09-28 10:07:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-28 10:07:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-28 10:07:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-28 10:07:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-09-28 10:07:22,764 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-09-28 10:07:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:22,764 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-09-28 10:07:22,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-28 10:07:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-09-28 10:07:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-28 10:07:22,765 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:22,765 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-09-28 10:07:22,766 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:22,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:22,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-09-28 10:07:22,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:22,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:22,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:22,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:22,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:22,775 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:22,775 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:22,775 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:07:22,789 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:07:22,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:07:22,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:07:23,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:25,156 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:25,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-09-28 10:07:25,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-28 10:07:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-28 10:07:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-09-28 10:07:25,157 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-09-28 10:07:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:28,739 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-28 10:07:28,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-28 10:07:28,740 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-09-28 10:07:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:28,741 INFO L225 Difference]: With dead ends: 137 [2018-09-28 10:07:28,741 INFO L226 Difference]: Without dead ends: 135 [2018-09-28 10:07:28,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-09-28 10:07:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-28 10:07:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-28 10:07:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-28 10:07:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-28 10:07:28,749 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-09-28 10:07:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:28,750 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-28 10:07:28,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-28 10:07:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-28 10:07:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-28 10:07:28,750 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:28,750 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-09-28 10:07:28,751 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:28,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-09-28 10:07:28,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:28,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:28,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:28,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:28,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:28,760 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:28,760 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:28,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:07:28,773 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:07:29,095 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-28 10:07:29,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:07:29,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:31,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:31,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-09-28 10:07:31,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-28 10:07:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-28 10:07:31,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-09-28 10:07:31,299 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-09-28 10:07:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:34,488 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-09-28 10:07:34,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-28 10:07:34,488 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-09-28 10:07:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:34,490 INFO L225 Difference]: With dead ends: 139 [2018-09-28 10:07:34,490 INFO L226 Difference]: Without dead ends: 137 [2018-09-28 10:07:34,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-09-28 10:07:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-28 10:07:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-28 10:07:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-28 10:07:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-09-28 10:07:34,498 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-09-28 10:07:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:34,498 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-09-28 10:07:34,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-28 10:07:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-09-28 10:07:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-28 10:07:34,499 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:34,499 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-09-28 10:07:34,500 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:34,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-09-28 10:07:34,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:34,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:34,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:34,508 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:34,508 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:34,508 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 [2018-09-28 10:07:34,520 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:07:35,885 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-28 10:07:35,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:07:35,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:38,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:38,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-09-28 10:07:38,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-28 10:07:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-28 10:07:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-09-28 10:07:38,367 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-09-28 10:07:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:41,497 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-28 10:07:41,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-28 10:07:41,497 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-09-28 10:07:41,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:41,498 INFO L225 Difference]: With dead ends: 141 [2018-09-28 10:07:41,498 INFO L226 Difference]: Without dead ends: 139 [2018-09-28 10:07:41,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-09-28 10:07:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-28 10:07:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-28 10:07:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-28 10:07:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-28 10:07:41,505 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-09-28 10:07:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:41,505 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-28 10:07:41,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-28 10:07:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-28 10:07:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-28 10:07:41,506 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:41,506 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-09-28 10:07:41,506 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:41,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-09-28 10:07:41,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:41,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:41,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:41,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:41,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:41,514 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:41,514 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:41,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:07:41,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:07:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:07:41,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:44,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:44,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-09-28 10:07:44,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-28 10:07:44,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-28 10:07:44,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-09-28 10:07:44,347 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-09-28 10:07:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:47,852 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-09-28 10:07:47,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-28 10:07:47,852 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-09-28 10:07:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:47,854 INFO L225 Difference]: With dead ends: 143 [2018-09-28 10:07:47,854 INFO L226 Difference]: Without dead ends: 141 [2018-09-28 10:07:47,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-09-28 10:07:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-28 10:07:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-28 10:07:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-28 10:07:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-09-28 10:07:47,860 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-09-28 10:07:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:47,860 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-09-28 10:07:47,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-28 10:07:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-09-28 10:07:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-28 10:07:47,861 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:47,861 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-09-28 10:07:47,861 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:47,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-09-28 10:07:47,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:47,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:47,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:47,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:07:47,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:47,870 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:47,870 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:47,870 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 [2018-09-28 10:07:47,879 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:07:48,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:07:48,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:07:48,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:07:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:07:50,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:07:50,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-09-28 10:07:50,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-28 10:07:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-28 10:07:50,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-09-28 10:07:50,447 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-09-28 10:07:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:07:54,625 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-28 10:07:54,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-28 10:07:54,625 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-09-28 10:07:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:07:54,626 INFO L225 Difference]: With dead ends: 145 [2018-09-28 10:07:54,626 INFO L226 Difference]: Without dead ends: 143 [2018-09-28 10:07:54,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-09-28 10:07:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-28 10:07:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-28 10:07:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-28 10:07:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-28 10:07:54,633 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-09-28 10:07:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:07:54,633 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-28 10:07:54,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-28 10:07:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-28 10:07:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-28 10:07:54,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:07:54,634 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-09-28 10:07:54,634 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:07:54,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:07:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-09-28 10:07:54,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:07:54,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:07:54,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:54,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:07:54,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:07:54,643 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:07:54,643 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:07:54,643 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 [2018-09-28 10:07:54,657 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:08:14,501 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-28 10:08:14,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:08:14,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:08:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:08:16,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:08:16,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-09-28 10:08:16,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-28 10:08:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-28 10:08:16,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-09-28 10:08:16,859 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-09-28 10:08:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:08:21,260 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-09-28 10:08:21,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-28 10:08:21,261 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-09-28 10:08:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:08:21,262 INFO L225 Difference]: With dead ends: 147 [2018-09-28 10:08:21,262 INFO L226 Difference]: Without dead ends: 145 [2018-09-28 10:08:21,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-09-28 10:08:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-28 10:08:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-28 10:08:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-28 10:08:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-09-28 10:08:21,269 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-09-28 10:08:21,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:08:21,270 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-09-28 10:08:21,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-28 10:08:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-09-28 10:08:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-28 10:08:21,270 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:08:21,270 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-09-28 10:08:21,271 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:08:21,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:08:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-09-28 10:08:21,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:08:21,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:08:21,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:21,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:08:21,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:21,279 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:08:21,279 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:08:21,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:08:21,294 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:08:21,541 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:08:21,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:08:21,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:08:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:08:24,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:08:24,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-09-28 10:08:24,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-28 10:08:24,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-28 10:08:24,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-09-28 10:08:24,389 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-09-28 10:08:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:08:28,698 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-28 10:08:28,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-28 10:08:28,699 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-09-28 10:08:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:08:28,700 INFO L225 Difference]: With dead ends: 149 [2018-09-28 10:08:28,700 INFO L226 Difference]: Without dead ends: 147 [2018-09-28 10:08:28,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-09-28 10:08:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-28 10:08:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-28 10:08:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-28 10:08:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-28 10:08:28,708 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-09-28 10:08:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:08:28,708 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-28 10:08:28,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-28 10:08:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-28 10:08:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-28 10:08:28,708 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:08:28,709 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-09-28 10:08:28,709 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:08:28,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:08:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-09-28 10:08:28,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:08:28,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:08:28,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:28,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:08:28,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:28,716 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:08:28,717 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:08:28,717 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 [2018-09-28 10:08:28,724 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:08:29,117 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-28 10:08:29,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:08:29,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:08:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:08:31,620 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:08:31,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-09-28 10:08:31,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-28 10:08:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-28 10:08:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-09-28 10:08:31,621 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-09-28 10:08:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:08:35,768 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-09-28 10:08:35,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-28 10:08:35,768 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-09-28 10:08:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:08:35,770 INFO L225 Difference]: With dead ends: 151 [2018-09-28 10:08:35,770 INFO L226 Difference]: Without dead ends: 149 [2018-09-28 10:08:35,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-09-28 10:08:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-28 10:08:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-28 10:08:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-28 10:08:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-09-28 10:08:35,778 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-09-28 10:08:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:08:35,778 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-09-28 10:08:35,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-28 10:08:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-09-28 10:08:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-28 10:08:35,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:08:35,780 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-09-28 10:08:35,780 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:08:35,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:08:35,780 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-09-28 10:08:35,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:08:35,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:08:35,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:35,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:08:35,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:08:35,789 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-28 10:08:35,789 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-28 10:08:35,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:08:35,803 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Received shutdown request... [2018-09-28 10:08:38,922 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-28 10:08:38,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:08:38,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:08:38,965 WARN L186 SmtUtils]: Removed 1 from assertion stack [2018-09-28 10:08:38,965 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-28 10:08:39,166 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-28 10:08:39,166 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-28 10:08:39,172 WARN L206 ceAbstractionStarter]: Timeout [2018-09-28 10:08:39,172 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:08:39 BoogieIcfgContainer [2018-09-28 10:08:39,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:08:39,173 INFO L168 Benchmark]: Toolchain (without parser) took 257628.25 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 272.8 MB). Peak memory consumption was 301.6 MB. Max. memory is 7.1 GB. [2018-09-28 10:08:39,175 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:08:39,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:08:39,175 INFO L168 Benchmark]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:08:39,175 INFO L168 Benchmark]: RCFGBuilder took 336.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:08:39,176 INFO L168 Benchmark]: TraceAbstraction took 257225.35 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 251.6 MB). Peak memory consumption was 280.5 MB. Max. memory is 7.1 GB. [2018-09-28 10:08:39,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 336.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257225.35 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 251.6 MB). Peak memory consumption was 280.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was analyzing trace of length 149 with TraceHistMax 73, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 7. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 257.1s OverallTime, 73 OverallIterations, 73 TraceHistogramMax, 104.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2844 SDtfs, 0 SDslu, 127021 SDs, 0 SdLazy, 132276 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5328 GetRequests, 2700 SyntacticMatches, 0 SemanticMatches, 2628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 72 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 63.2s SatisfiabilityAnalysisTime, 81.6s InterpolantComputationTime, 5400 NumberOfCodeBlocks, 5400 NumberOfCodeBlocksAsserted, 1380 NumberOfCheckSat, 5328 ConstructedInterpolants, 0 QuantifiedInterpolants, 3633940 SizeOfPredicates, 357 NumberOfNonLiveVariables, 16704 ConjunctsInSsa, 11008 ConjunctsInUnsatCore, 72 InterpolantComputations, 1 PerfectInterpolantSequences, 0/124392 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.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-28_10-08-39-187.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_10-08-39-187.csv Completed graceful shutdown