java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:40:45,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:40:45,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:40:45,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:40:45,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:40:45,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:40:45,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:40:45,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:40:45,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:40:45,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:40:45,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:40:45,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:40:45,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:40:45,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:40:45,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:40:45,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:40:45,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:40:45,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:40:45,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:40:45,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:40:45,602 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:40:45,604 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:40:45,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 09:40:45,607 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 09:40:45,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 09:40:45,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 09:40:45,610 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 09:40:45,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 09:40:45,611 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 09:40:45,612 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 09:40:45,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 09:40:45,613 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 09:40:45,614 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 09:40:45,614 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 09:40:45,615 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 09:40:45,615 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 09:40:45,616 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 09:40:45,630 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:40:45,630 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:40:45,631 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:40:45,631 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:40:45,632 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:40:45,632 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:40:45,632 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:40:45,633 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:40:45,633 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:40:45,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:40:45,633 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:40:45,633 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:40:45,634 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:40:45,634 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:40:45,634 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:40:45,634 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:40:45,634 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:40:45,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:40:45,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:40:45,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:40:45,635 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:40:45,635 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:40:45,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:40:45,636 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:40:45,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:40:45,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:40:45,636 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:40:45,637 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:40:45,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:40:45,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:40:45,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:40:45,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:40:45,709 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:40:45,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-10-23 09:40:45,775 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9fb13d95/057755a6ff0a4d9d9974e1b79068a11f/FLAG36d268a9d [2018-10-23 09:40:46,252 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:40:46,253 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-10-23 09:40:46,265 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9fb13d95/057755a6ff0a4d9d9974e1b79068a11f/FLAG36d268a9d [2018-10-23 09:40:46,280 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9fb13d95/057755a6ff0a4d9d9974e1b79068a11f [2018-10-23 09:40:46,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:40:46,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:40:46,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:40:46,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:40:46,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:40:46,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e468d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46, skipping insertion in model container [2018-10-23 09:40:46,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:40:46,339 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:40:46,499 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:40:46,504 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:40:46,524 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:40:46,540 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:40:46,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46 WrapperNode [2018-10-23 09:40:46,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:40:46,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:40:46,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:40:46,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:40:46,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:40:46,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:40:46,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:40:46,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:40:46,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... [2018-10-23 09:40:46,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:40:46,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:40:46,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:40:46,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:40:46,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:40:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:40:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:40:47,024 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:40:47,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:40:47 BoogieIcfgContainer [2018-10-23 09:40:47,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:40:47,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:40:47,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:40:47,029 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:40:47,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:40:46" (1/3) ... [2018-10-23 09:40:47,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405a5288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:40:47, skipping insertion in model container [2018-10-23 09:40:47,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:40:46" (2/3) ... [2018-10-23 09:40:47,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405a5288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:40:47, skipping insertion in model container [2018-10-23 09:40:47,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:40:47" (3/3) ... [2018-10-23 09:40:47,034 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+cfa-reducer.c [2018-10-23 09:40:47,042 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:40:47,050 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 09:40:47,067 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 09:40:47,100 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:40:47,101 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:40:47,101 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:40:47,101 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:40:47,101 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:40:47,101 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:40:47,101 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:40:47,101 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:40:47,102 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:40:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-10-23 09:40:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-23 09:40:47,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:47,123 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:47,125 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:47,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:47,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2018-10-23 09:40:47,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:47,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:47,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:47,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,210 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:47,210 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:47,210 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:47,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:47,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:47,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:40:47,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 09:40:47,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 09:40:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 09:40:47,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 09:40:47,467 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2018-10-23 09:40:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:47,555 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-23 09:40:47,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 09:40:47,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-23 09:40:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:47,568 INFO L225 Difference]: With dead ends: 21 [2018-10-23 09:40:47,568 INFO L226 Difference]: Without dead ends: 9 [2018-10-23 09:40:47,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 09:40:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-23 09:40:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-23 09:40:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-23 09:40:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-23 09:40:47,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-23 09:40:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:47,605 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-23 09:40:47,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 09:40:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-23 09:40:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-23 09:40:47,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:47,606 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:47,608 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:47,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:47,608 INFO L82 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2018-10-23 09:40:47,609 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:47,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:47,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:47,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,618 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:47,619 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:47,619 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:47,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:47,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:47,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:47,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-23 09:40:47,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 09:40:47,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 09:40:47,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:40:47,800 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-10-23 09:40:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:47,957 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-23 09:40:47,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 09:40:47,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-23 09:40:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:47,958 INFO L225 Difference]: With dead ends: 13 [2018-10-23 09:40:47,958 INFO L226 Difference]: Without dead ends: 10 [2018-10-23 09:40:47,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 09:40:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-23 09:40:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-23 09:40:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-23 09:40:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-23 09:40:47,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-23 09:40:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:47,963 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-23 09:40:47,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 09:40:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-23 09:40:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-23 09:40:47,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:47,964 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:47,964 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:47,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1270519115, now seen corresponding path program 2 times [2018-10-23 09:40:47,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:47,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:47,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:47,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:47,977 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:47,977 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:47,977 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:47,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:40:48,003 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:40:48,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:48,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:48,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:48,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-23 09:40:48,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 09:40:48,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 09:40:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:40:48,371 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-10-23 09:40:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:48,503 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-23 09:40:48,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 09:40:48,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-23 09:40:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:48,504 INFO L225 Difference]: With dead ends: 14 [2018-10-23 09:40:48,505 INFO L226 Difference]: Without dead ends: 11 [2018-10-23 09:40:48,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 09:40:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-23 09:40:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-23 09:40:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-23 09:40:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-23 09:40:48,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-23 09:40:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:48,509 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-23 09:40:48,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 09:40:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-23 09:40:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 09:40:48,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:48,510 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:48,510 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:48,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash 731324427, now seen corresponding path program 3 times [2018-10-23 09:40:48,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:48,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:48,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:48,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:48,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:48,521 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:48,522 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:48,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:48,534 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:40:48,553 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-23 09:40:48,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:48,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:48,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:48,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-23 09:40:48,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 09:40:48,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 09:40:48,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-23 09:40:48,797 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-10-23 09:40:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:48,896 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-23 09:40:48,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 09:40:48,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-23 09:40:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:48,897 INFO L225 Difference]: With dead ends: 15 [2018-10-23 09:40:48,897 INFO L226 Difference]: Without dead ends: 12 [2018-10-23 09:40:48,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-23 09:40:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-23 09:40:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-23 09:40:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-23 09:40:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-23 09:40:48,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-23 09:40:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:48,902 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-23 09:40:48,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 09:40:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-23 09:40:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 09:40:48,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:48,903 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:48,904 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:48,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1196158283, now seen corresponding path program 4 times [2018-10-23 09:40:48,904 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:48,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:48,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:48,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:48,915 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:48,915 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:48,916 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:48,938 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:40:48,983 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:40:48,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:48,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:49,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:49,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-23 09:40:49,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 09:40:49,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 09:40:49,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-23 09:40:49,399 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-10-23 09:40:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:49,552 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-23 09:40:49,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 09:40:49,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-10-23 09:40:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:49,553 INFO L225 Difference]: With dead ends: 16 [2018-10-23 09:40:49,554 INFO L226 Difference]: Without dead ends: 13 [2018-10-23 09:40:49,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-23 09:40:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-23 09:40:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-23 09:40:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-23 09:40:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-23 09:40:49,559 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-23 09:40:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:49,559 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-23 09:40:49,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 09:40:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-23 09:40:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 09:40:49,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:49,560 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:49,560 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:49,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1573861365, now seen corresponding path program 5 times [2018-10-23 09:40:49,561 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:49,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:49,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:49,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:49,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:49,573 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:49,573 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:49,573 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:49,584 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:40:49,598 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-23 09:40:49,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:49,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:49,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:49,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-23 09:40:49,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 09:40:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 09:40:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-23 09:40:49,800 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2018-10-23 09:40:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:49,921 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-23 09:40:49,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 09:40:49,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-10-23 09:40:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:49,923 INFO L225 Difference]: With dead ends: 17 [2018-10-23 09:40:49,923 INFO L226 Difference]: Without dead ends: 14 [2018-10-23 09:40:49,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-23 09:40:49,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-23 09:40:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-23 09:40:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-23 09:40:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-23 09:40:49,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-23 09:40:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:49,930 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-23 09:40:49,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 09:40:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-23 09:40:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 09:40:49,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:49,931 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:49,931 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:49,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1545124533, now seen corresponding path program 6 times [2018-10-23 09:40:49,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:49,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:49,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:49,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:49,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:49,944 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:49,944 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:49,944 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:49,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:40:49,969 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-23 09:40:49,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:49,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:50,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:50,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-23 09:40:50,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 09:40:50,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 09:40:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-23 09:40:50,191 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-10-23 09:40:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:50,343 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-23 09:40:50,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 09:40:50,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-10-23 09:40:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:50,344 INFO L225 Difference]: With dead ends: 18 [2018-10-23 09:40:50,345 INFO L226 Difference]: Without dead ends: 15 [2018-10-23 09:40:50,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-10-23 09:40:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-23 09:40:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-23 09:40:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-23 09:40:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-23 09:40:50,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-23 09:40:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:50,350 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-23 09:40:50,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 09:40:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-23 09:40:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 09:40:50,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:50,351 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:50,351 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:50,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:50,352 INFO L82 PathProgramCache]: Analyzing trace with hash -654282741, now seen corresponding path program 7 times [2018-10-23 09:40:50,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:50,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:50,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:50,363 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:50,363 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:50,363 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:50,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:50,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:50,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:50,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-23 09:40:50,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 09:40:50,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 09:40:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-23 09:40:50,630 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2018-10-23 09:40:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:50,741 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-23 09:40:50,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 09:40:50,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-10-23 09:40:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:50,742 INFO L225 Difference]: With dead ends: 19 [2018-10-23 09:40:50,742 INFO L226 Difference]: Without dead ends: 16 [2018-10-23 09:40:50,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-10-23 09:40:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-23 09:40:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-23 09:40:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-23 09:40:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-23 09:40:50,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-23 09:40:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:50,748 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-23 09:40:50,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 09:40:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-23 09:40:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-23 09:40:50,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:50,748 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:50,749 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:50,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:50,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1192009035, now seen corresponding path program 8 times [2018-10-23 09:40:50,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:50,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:50,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:50,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:50,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:50,761 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:50,761 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:50,761 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:50,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:40:50,797 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:40:50,797 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:50,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:50,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:50,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-23 09:40:50,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 09:40:50,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 09:40:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-23 09:40:50,985 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2018-10-23 09:40:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:51,145 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-23 09:40:51,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 09:40:51,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2018-10-23 09:40:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:51,147 INFO L225 Difference]: With dead ends: 20 [2018-10-23 09:40:51,147 INFO L226 Difference]: Without dead ends: 17 [2018-10-23 09:40:51,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-10-23 09:40:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-23 09:40:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-23 09:40:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-23 09:40:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-23 09:40:51,152 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-23 09:40:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:51,153 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-23 09:40:51,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 09:40:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-23 09:40:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 09:40:51,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:51,154 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:51,154 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:51,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:51,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1702488053, now seen corresponding path program 9 times [2018-10-23 09:40:51,155 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:51,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:51,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:51,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:51,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:51,166 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:51,167 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:51,167 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:51,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:40:51,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-23 09:40:51,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:51,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:51,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:51,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-23 09:40:51,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 09:40:51,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 09:40:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-23 09:40:51,508 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 13 states. [2018-10-23 09:40:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:51,687 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-23 09:40:51,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 09:40:51,688 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2018-10-23 09:40:51,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:51,689 INFO L225 Difference]: With dead ends: 21 [2018-10-23 09:40:51,689 INFO L226 Difference]: Without dead ends: 18 [2018-10-23 09:40:51,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-10-23 09:40:51,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-23 09:40:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-23 09:40:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-23 09:40:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-23 09:40:51,694 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-23 09:40:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:51,695 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-23 09:40:51,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 09:40:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-23 09:40:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-23 09:40:51,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:51,696 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:51,696 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:51,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1237584565, now seen corresponding path program 10 times [2018-10-23 09:40:51,696 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:51,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:51,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:51,707 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:51,707 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:51,708 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:51,717 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:40:51,804 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:40:51,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:51,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:52,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:52,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-23 09:40:52,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 09:40:52,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 09:40:52,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-10-23 09:40:52,158 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-10-23 09:40:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:52,315 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-23 09:40:52,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 09:40:52,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-10-23 09:40:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:52,317 INFO L225 Difference]: With dead ends: 22 [2018-10-23 09:40:52,317 INFO L226 Difference]: Without dead ends: 19 [2018-10-23 09:40:52,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-10-23 09:40:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-23 09:40:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-23 09:40:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-23 09:40:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-23 09:40:52,322 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-23 09:40:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:52,322 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-23 09:40:52,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 09:40:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-23 09:40:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 09:40:52,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:52,323 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:52,323 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:52,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash 289521675, now seen corresponding path program 11 times [2018-10-23 09:40:52,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:52,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:52,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:52,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:52,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:52,335 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:52,335 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:52,335 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:52,351 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:40:52,373 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-23 09:40:52,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:52,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:52,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:52,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-23 09:40:52,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 09:40:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 09:40:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-10-23 09:40:52,733 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 15 states. [2018-10-23 09:40:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:53,227 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-23 09:40:53,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 09:40:53,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2018-10-23 09:40:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:53,228 INFO L225 Difference]: With dead ends: 23 [2018-10-23 09:40:53,228 INFO L226 Difference]: Without dead ends: 20 [2018-10-23 09:40:53,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-10-23 09:40:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-23 09:40:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-23 09:40:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-23 09:40:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-23 09:40:53,234 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-23 09:40:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:53,234 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-23 09:40:53,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-23 09:40:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-23 09:40:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 09:40:53,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:53,236 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:53,236 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:53,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash 385174859, now seen corresponding path program 12 times [2018-10-23 09:40:53,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:53,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:53,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:53,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:53,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:53,247 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:53,248 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:53,248 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:53,268 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:40:53,292 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-23 09:40:53,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:53,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:53,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:53,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-23 09:40:53,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 09:40:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 09:40:53,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-10-23 09:40:53,624 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 16 states. [2018-10-23 09:40:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:54,102 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-23 09:40:54,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 09:40:54,103 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2018-10-23 09:40:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:54,103 INFO L225 Difference]: With dead ends: 24 [2018-10-23 09:40:54,104 INFO L226 Difference]: Without dead ends: 21 [2018-10-23 09:40:54,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-10-23 09:40:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-23 09:40:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-23 09:40:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-23 09:40:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-23 09:40:54,109 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-23 09:40:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:54,109 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-23 09:40:54,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-23 09:40:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-23 09:40:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-23 09:40:54,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:54,110 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:54,111 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:54,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash -944543733, now seen corresponding path program 13 times [2018-10-23 09:40:54,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:54,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:54,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:54,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:54,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:54,124 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:54,124 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:54,124 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:54,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:54,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:56,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:56,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-23 09:40:56,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 09:40:56,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 09:40:56,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-10-23 09:40:56,032 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 17 states. [2018-10-23 09:40:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:56,254 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-23 09:40:56,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 09:40:56,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-10-23 09:40:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:56,255 INFO L225 Difference]: With dead ends: 25 [2018-10-23 09:40:56,255 INFO L226 Difference]: Without dead ends: 22 [2018-10-23 09:40:56,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2018-10-23 09:40:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-23 09:40:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-23 09:40:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-23 09:40:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-23 09:40:56,262 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-23 09:40:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:56,262 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-23 09:40:56,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-23 09:40:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-23 09:40:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 09:40:56,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:56,263 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:56,263 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:56,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash 783852875, now seen corresponding path program 14 times [2018-10-23 09:40:56,264 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:56,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:56,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:56,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:56,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:56,275 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:56,275 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:56,275 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:56,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:40:56,332 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:40:56,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:56,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:56,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:56,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-23 09:40:56,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 09:40:56,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 09:40:56,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-10-23 09:40:56,620 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 18 states. [2018-10-23 09:40:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:57,109 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-23 09:40:57,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 09:40:57,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2018-10-23 09:40:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:57,110 INFO L225 Difference]: With dead ends: 26 [2018-10-23 09:40:57,110 INFO L226 Difference]: Without dead ends: 23 [2018-10-23 09:40:57,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2018-10-23 09:40:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-23 09:40:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-23 09:40:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-23 09:40:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-23 09:40:57,115 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-23 09:40:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:57,115 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-23 09:40:57,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-23 09:40:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-23 09:40:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 09:40:57,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:57,116 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:57,116 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:57,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1470427125, now seen corresponding path program 15 times [2018-10-23 09:40:57,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:57,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:57,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:57,127 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:57,128 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:57,128 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:57,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:40:57,207 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-23 09:40:57,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:57,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:58,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:58,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-23 09:40:58,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 09:40:58,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 09:40:58,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-10-23 09:40:58,067 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 19 states. [2018-10-23 09:40:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:58,359 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-23 09:40:58,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 09:40:58,360 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2018-10-23 09:40:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:58,361 INFO L225 Difference]: With dead ends: 27 [2018-10-23 09:40:58,361 INFO L226 Difference]: Without dead ends: 24 [2018-10-23 09:40:58,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-10-23 09:40:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-23 09:40:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-23 09:40:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-23 09:40:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-23 09:40:58,368 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-23 09:40:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:58,368 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-23 09:40:58,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-23 09:40:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-23 09:40:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 09:40:58,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:58,369 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:58,369 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:58,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:58,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1661336907, now seen corresponding path program 16 times [2018-10-23 09:40:58,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:58,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:58,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:58,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:58,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:58,381 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:58,381 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:58,381 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:58,405 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:40:58,555 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:40:58,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:58,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:58,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:58,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-23 09:40:58,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 09:40:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 09:40:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-10-23 09:40:58,887 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 20 states. [2018-10-23 09:40:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:59,227 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-23 09:40:59,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 09:40:59,227 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-23 09:40:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:59,228 INFO L225 Difference]: With dead ends: 28 [2018-10-23 09:40:59,228 INFO L226 Difference]: Without dead ends: 25 [2018-10-23 09:40:59,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2018-10-23 09:40:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-23 09:40:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-23 09:40:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-23 09:40:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-23 09:40:59,234 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-23 09:40:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:59,235 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-23 09:40:59,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-23 09:40:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-23 09:40:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 09:40:59,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:59,236 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:59,236 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:59,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:59,236 INFO L82 PathProgramCache]: Analyzing trace with hash -38225909, now seen corresponding path program 17 times [2018-10-23 09:40:59,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:59,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:59,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:59,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:40:59,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:59,247 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:40:59,247 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:40:59,247 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:40:59,265 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:40:59,294 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-23 09:40:59,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:40:59,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:40:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:59,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:40:59,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-23 09:40:59,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-23 09:40:59,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-23 09:40:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-10-23 09:40:59,691 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 21 states. [2018-10-23 09:41:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:00,108 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-23 09:41:00,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 09:41:00,109 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2018-10-23 09:41:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:00,110 INFO L225 Difference]: With dead ends: 29 [2018-10-23 09:41:00,110 INFO L226 Difference]: Without dead ends: 26 [2018-10-23 09:41:00,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2018-10-23 09:41:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-23 09:41:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-23 09:41:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-23 09:41:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-23 09:41:00,115 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-23 09:41:00,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:00,115 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-23 09:41:00,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-23 09:41:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-23 09:41:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 09:41:00,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:00,116 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:00,116 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:00,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1185065653, now seen corresponding path program 18 times [2018-10-23 09:41:00,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:00,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:00,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:00,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:00,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:00,129 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:00,129 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:00,129 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:00,141 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:41:00,179 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-23 09:41:00,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:00,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:00,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:00,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-23 09:41:00,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 09:41:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 09:41:00,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-10-23 09:41:00,479 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 22 states. [2018-10-23 09:41:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:00,819 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-23 09:41:00,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 09:41:00,820 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2018-10-23 09:41:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:00,820 INFO L225 Difference]: With dead ends: 30 [2018-10-23 09:41:00,821 INFO L226 Difference]: Without dead ends: 27 [2018-10-23 09:41:00,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2018-10-23 09:41:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-23 09:41:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-23 09:41:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-23 09:41:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-23 09:41:00,827 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-23 09:41:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:00,827 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-23 09:41:00,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-23 09:41:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-23 09:41:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-23 09:41:00,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:00,828 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:00,828 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:00,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1917607947, now seen corresponding path program 19 times [2018-10-23 09:41:00,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:00,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:00,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:00,838 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:00,838 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:00,838 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:00,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:41:00,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:01,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:01,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-23 09:41:01,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-23 09:41:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-23 09:41:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-10-23 09:41:01,405 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 23 states. [2018-10-23 09:41:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:01,776 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-23 09:41:01,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 09:41:01,776 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2018-10-23 09:41:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:01,777 INFO L225 Difference]: With dead ends: 31 [2018-10-23 09:41:01,777 INFO L226 Difference]: Without dead ends: 28 [2018-10-23 09:41:01,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2018-10-23 09:41:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-23 09:41:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-23 09:41:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-23 09:41:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-23 09:41:01,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-23 09:41:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:01,784 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-23 09:41:01,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-23 09:41:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-23 09:41:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-23 09:41:01,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:01,785 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:01,785 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:01,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:01,786 INFO L82 PathProgramCache]: Analyzing trace with hash -683758261, now seen corresponding path program 20 times [2018-10-23 09:41:01,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:01,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:01,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:01,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:01,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:01,802 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:01,802 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:01,803 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:01,824 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:41:01,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:41:01,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:01,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:02,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:02,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-23 09:41:02,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 09:41:02,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 09:41:02,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-10-23 09:41:02,257 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 24 states. [2018-10-23 09:41:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:03,184 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-23 09:41:03,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 09:41:03,185 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2018-10-23 09:41:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:03,186 INFO L225 Difference]: With dead ends: 32 [2018-10-23 09:41:03,186 INFO L226 Difference]: Without dead ends: 29 [2018-10-23 09:41:03,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2018-10-23 09:41:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-23 09:41:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-23 09:41:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-23 09:41:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-23 09:41:03,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-23 09:41:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:03,192 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-23 09:41:03,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-23 09:41:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-23 09:41:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-23 09:41:03,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:03,193 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:03,194 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:03,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 278267915, now seen corresponding path program 21 times [2018-10-23 09:41:03,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:03,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:03,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:03,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:03,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:03,203 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:03,203 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:03,203 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:03,215 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:41:03,341 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-23 09:41:03,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:03,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:03,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:03,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-23 09:41:03,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-23 09:41:03,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-23 09:41:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-10-23 09:41:03,816 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 25 states. [2018-10-23 09:41:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:04,449 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-23 09:41:04,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-23 09:41:04,453 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2018-10-23 09:41:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:04,454 INFO L225 Difference]: With dead ends: 33 [2018-10-23 09:41:04,454 INFO L226 Difference]: Without dead ends: 30 [2018-10-23 09:41:04,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2018-10-23 09:41:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-23 09:41:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-23 09:41:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-23 09:41:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-23 09:41:04,463 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-23 09:41:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:04,463 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-23 09:41:04,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-23 09:41:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-23 09:41:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 09:41:04,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:04,467 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:04,467 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:04,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash 36308299, now seen corresponding path program 22 times [2018-10-23 09:41:04,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:04,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:04,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:04,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:04,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:04,476 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:04,476 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:04,476 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:04,491 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:41:04,694 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:41:04,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:04,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:05,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:05,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-23 09:41:05,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-23 09:41:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-23 09:41:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-10-23 09:41:05,504 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 26 states. [2018-10-23 09:41:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:05,959 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-23 09:41:05,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-23 09:41:05,959 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2018-10-23 09:41:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:05,960 INFO L225 Difference]: With dead ends: 34 [2018-10-23 09:41:05,960 INFO L226 Difference]: Without dead ends: 31 [2018-10-23 09:41:05,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2018-10-23 09:41:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-23 09:41:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-23 09:41:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-23 09:41:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-23 09:41:05,966 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-23 09:41:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:05,966 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-23 09:41:05,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-23 09:41:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-23 09:41:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 09:41:05,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:05,967 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:05,967 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:05,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1125494795, now seen corresponding path program 23 times [2018-10-23 09:41:05,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:05,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:05,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:05,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:05,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:05,976 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:05,976 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:05,976 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:05,996 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:41:06,040 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-23 09:41:06,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:06,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:06,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:06,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-23 09:41:06,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-23 09:41:06,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-23 09:41:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-10-23 09:41:06,447 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 27 states. [2018-10-23 09:41:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:07,017 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-23 09:41:07,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-23 09:41:07,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2018-10-23 09:41:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:07,020 INFO L225 Difference]: With dead ends: 35 [2018-10-23 09:41:07,020 INFO L226 Difference]: Without dead ends: 32 [2018-10-23 09:41:07,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2018-10-23 09:41:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-23 09:41:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-23 09:41:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-23 09:41:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-23 09:41:07,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-23 09:41:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:07,024 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-23 09:41:07,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-23 09:41:07,025 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-23 09:41:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 09:41:07,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:07,025 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:07,025 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:07,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash 530537803, now seen corresponding path program 24 times [2018-10-23 09:41:07,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:07,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:07,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:07,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:07,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:07,037 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:07,037 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:07,038 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-23 09:41:07,050 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:07,128 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-23 09:41:07,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:07,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:07,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:07,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-23 09:41:07,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-23 09:41:07,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-23 09:41:07,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-10-23 09:41:07,755 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 28 states. [2018-10-23 09:41:08,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:08,245 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-23 09:41:08,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-23 09:41:08,246 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2018-10-23 09:41:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:08,246 INFO L225 Difference]: With dead ends: 36 [2018-10-23 09:41:08,246 INFO L226 Difference]: Without dead ends: 33 [2018-10-23 09:41:08,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2018-10-23 09:41:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-23 09:41:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-23 09:41:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-23 09:41:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-23 09:41:08,252 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-23 09:41:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:08,252 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-23 09:41:08,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-23 09:41:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-23 09:41:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-23 09:41:08,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:08,253 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:08,254 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:08,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:08,254 INFO L82 PathProgramCache]: Analyzing trace with hash -733259765, now seen corresponding path program 25 times [2018-10-23 09:41:08,254 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:08,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:08,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:08,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:08,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:08,261 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:08,262 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:08,262 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:08,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:41:08,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:08,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:08,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-23 09:41:08,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-23 09:41:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-23 09:41:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-10-23 09:41:08,877 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 29 states. [2018-10-23 09:41:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:09,424 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-23 09:41:09,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-23 09:41:09,424 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2018-10-23 09:41:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:09,425 INFO L225 Difference]: With dead ends: 37 [2018-10-23 09:41:09,425 INFO L226 Difference]: Without dead ends: 34 [2018-10-23 09:41:09,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2018-10-23 09:41:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-23 09:41:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-23 09:41:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-23 09:41:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-23 09:41:09,431 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-23 09:41:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:09,431 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-23 09:41:09,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-23 09:41:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-23 09:41:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-23 09:41:09,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:09,432 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:09,432 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:09,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:09,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1256278709, now seen corresponding path program 26 times [2018-10-23 09:41:09,433 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:09,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:09,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:09,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:09,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:09,441 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:09,441 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:09,441 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:09,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:41:09,499 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:41:09,499 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:09,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:10,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:10,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-23 09:41:10,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-23 09:41:10,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-23 09:41:10,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-10-23 09:41:10,214 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 30 states. [2018-10-23 09:41:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:10,839 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-23 09:41:10,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-23 09:41:10,840 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2018-10-23 09:41:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:10,840 INFO L225 Difference]: With dead ends: 38 [2018-10-23 09:41:10,840 INFO L226 Difference]: Without dead ends: 35 [2018-10-23 09:41:10,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2018-10-23 09:41:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-23 09:41:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-23 09:41:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-23 09:41:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-23 09:41:10,846 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-23 09:41:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:10,847 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-23 09:41:10,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-23 09:41:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-23 09:41:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-23 09:41:10,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:10,848 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:10,848 INFO L424 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:10,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:10,848 INFO L82 PathProgramCache]: Analyzing trace with hash -289996789, now seen corresponding path program 27 times [2018-10-23 09:41:10,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:10,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:10,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:10,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:10,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:10,856 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:10,857 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:10,857 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:10,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:41:11,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-23 09:41:11,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:11,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:11,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:11,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-23 09:41:11,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-23 09:41:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-23 09:41:11,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-10-23 09:41:11,724 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 31 states. [2018-10-23 09:41:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:12,457 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-23 09:41:12,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-23 09:41:12,458 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 34 [2018-10-23 09:41:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:12,458 INFO L225 Difference]: With dead ends: 39 [2018-10-23 09:41:12,459 INFO L226 Difference]: Without dead ends: 36 [2018-10-23 09:41:12,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2018-10-23 09:41:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-23 09:41:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-23 09:41:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-23 09:41:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-23 09:41:12,465 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-23 09:41:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:12,466 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-23 09:41:12,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-23 09:41:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-23 09:41:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-23 09:41:12,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:12,466 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:12,467 INFO L424 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:12,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -400028341, now seen corresponding path program 28 times [2018-10-23 09:41:12,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:12,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:12,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:12,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:12,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:12,475 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:12,475 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:12,475 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:12,495 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:41:12,782 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:41:12,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:12,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:13,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:13,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-23 09:41:13,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-23 09:41:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-23 09:41:13,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-10-23 09:41:13,359 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 32 states. [2018-10-23 09:41:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:14,101 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-23 09:41:14,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-23 09:41:14,107 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 35 [2018-10-23 09:41:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:14,107 INFO L225 Difference]: With dead ends: 40 [2018-10-23 09:41:14,107 INFO L226 Difference]: Without dead ends: 37 [2018-10-23 09:41:14,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=991, Unknown=0, NotChecked=0, Total=1056 [2018-10-23 09:41:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-23 09:41:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-23 09:41:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-23 09:41:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-23 09:41:14,112 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-23 09:41:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:14,112 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-23 09:41:14,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-23 09:41:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-23 09:41:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-23 09:41:14,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:14,113 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:14,113 INFO L424 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:14,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash 483960843, now seen corresponding path program 29 times [2018-10-23 09:41:14,114 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:14,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:14,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:14,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:14,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:14,122 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:14,122 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:14,122 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:14,139 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:41:14,200 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-23 09:41:14,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:14,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:14,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:14,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-23 09:41:14,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-23 09:41:14,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-23 09:41:14,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-10-23 09:41:14,793 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 33 states. [2018-10-23 09:41:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:15,712 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-23 09:41:15,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-23 09:41:15,712 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 36 [2018-10-23 09:41:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:15,713 INFO L225 Difference]: With dead ends: 41 [2018-10-23 09:41:15,713 INFO L226 Difference]: Without dead ends: 38 [2018-10-23 09:41:15,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=1055, Unknown=0, NotChecked=0, Total=1122 [2018-10-23 09:41:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-23 09:41:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-23 09:41:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-23 09:41:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-23 09:41:15,717 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-23 09:41:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:15,717 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-23 09:41:15,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-23 09:41:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-23 09:41:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-23 09:41:15,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:15,718 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:15,718 INFO L424 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:15,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2117821771, now seen corresponding path program 30 times [2018-10-23 09:41:15,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:15,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:15,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:15,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:15,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:15,726 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:15,726 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:15,726 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:15,740 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:41:15,880 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-23 09:41:15,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:15,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:16,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:16,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-23 09:41:16,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-23 09:41:16,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-23 09:41:16,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-10-23 09:41:16,465 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 34 states. [2018-10-23 09:41:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:17,203 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-23 09:41:17,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-23 09:41:17,203 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 37 [2018-10-23 09:41:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:17,204 INFO L225 Difference]: With dead ends: 42 [2018-10-23 09:41:17,204 INFO L226 Difference]: Without dead ends: 39 [2018-10-23 09:41:17,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=1121, Unknown=0, NotChecked=0, Total=1190 [2018-10-23 09:41:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-23 09:41:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-23 09:41:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-23 09:41:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-23 09:41:17,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-23 09:41:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:17,210 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-23 09:41:17,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-23 09:41:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-23 09:41:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-23 09:41:17,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:17,211 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:17,211 INFO L424 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:17,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1227902987, now seen corresponding path program 31 times [2018-10-23 09:41:17,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:17,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:17,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:17,219 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:17,220 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:17,220 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:17,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:41:17,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:18,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:18,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-23 09:41:18,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-23 09:41:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-23 09:41:18,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-10-23 09:41:18,124 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 35 states. [2018-10-23 09:41:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:18,922 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-23 09:41:18,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-23 09:41:18,923 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2018-10-23 09:41:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:18,924 INFO L225 Difference]: With dead ends: 43 [2018-10-23 09:41:18,924 INFO L226 Difference]: Without dead ends: 40 [2018-10-23 09:41:18,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=1189, Unknown=0, NotChecked=0, Total=1260 [2018-10-23 09:41:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-23 09:41:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-23 09:41:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-23 09:41:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-23 09:41:18,930 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-23 09:41:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:18,930 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-23 09:41:18,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-23 09:41:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-23 09:41:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-23 09:41:18,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:18,931 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:18,931 INFO L424 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:18,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash -589775541, now seen corresponding path program 32 times [2018-10-23 09:41:18,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:18,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:18,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:18,939 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:18,939 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:18,939 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:18,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:41:19,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:41:19,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:19,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:20,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:20,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-23 09:41:20,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-23 09:41:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-23 09:41:20,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-10-23 09:41:20,739 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 36 states. [2018-10-23 09:41:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:21,614 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-23 09:41:21,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-23 09:41:21,615 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 39 [2018-10-23 09:41:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:21,615 INFO L225 Difference]: With dead ends: 44 [2018-10-23 09:41:21,615 INFO L226 Difference]: Without dead ends: 41 [2018-10-23 09:41:21,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=1259, Unknown=0, NotChecked=0, Total=1332 [2018-10-23 09:41:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-23 09:41:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-23 09:41:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-23 09:41:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-23 09:41:21,620 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-23 09:41:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:21,620 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-23 09:41:21,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-23 09:41:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-23 09:41:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 09:41:21,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:21,621 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:21,621 INFO L424 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:21,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:21,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1103235061, now seen corresponding path program 33 times [2018-10-23 09:41:21,621 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:21,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:21,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:21,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:21,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:21,628 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:21,628 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:21,628 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:21,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:41:22,315 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-23 09:41:22,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:22,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:23,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:23,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-23 09:41:23,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-23 09:41:23,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-23 09:41:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-10-23 09:41:23,438 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 37 states. [2018-10-23 09:41:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:24,316 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-23 09:41:24,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-23 09:41:24,317 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 40 [2018-10-23 09:41:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:24,317 INFO L225 Difference]: With dead ends: 45 [2018-10-23 09:41:24,317 INFO L226 Difference]: Without dead ends: 42 [2018-10-23 09:41:24,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=1331, Unknown=0, NotChecked=0, Total=1406 [2018-10-23 09:41:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-23 09:41:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-23 09:41:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-23 09:41:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-23 09:41:24,323 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-23 09:41:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:24,323 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-23 09:41:24,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-23 09:41:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-23 09:41:24,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-23 09:41:24,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:24,324 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:24,324 INFO L424 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:24,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash 159389003, now seen corresponding path program 34 times [2018-10-23 09:41:24,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:24,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:24,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:24,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:24,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:24,331 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:24,332 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:24,332 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:24,348 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:41:24,945 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:41:24,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:24,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:26,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:26,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-23 09:41:26,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-23 09:41:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-23 09:41:26,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-10-23 09:41:26,113 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 38 states. [2018-10-23 09:41:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:27,055 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-23 09:41:27,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-23 09:41:27,056 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 41 [2018-10-23 09:41:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:27,057 INFO L225 Difference]: With dead ends: 46 [2018-10-23 09:41:27,057 INFO L226 Difference]: Without dead ends: 43 [2018-10-23 09:41:27,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=1405, Unknown=0, NotChecked=0, Total=1482 [2018-10-23 09:41:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-23 09:41:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-23 09:41:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-23 09:41:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-23 09:41:27,062 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-23 09:41:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:27,062 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-23 09:41:27,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-23 09:41:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-23 09:41:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-23 09:41:27,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:27,063 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:27,063 INFO L424 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:27,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:27,063 INFO L82 PathProgramCache]: Analyzing trace with hash 646029323, now seen corresponding path program 35 times [2018-10-23 09:41:27,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:27,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:27,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:27,064 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:27,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:27,071 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:27,071 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:27,071 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:27,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:41:27,154 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-23 09:41:27,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:27,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:28,107 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:28,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-23 09:41:28,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-23 09:41:28,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-23 09:41:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-10-23 09:41:28,108 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 39 states. [2018-10-23 09:41:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:29,109 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-23 09:41:29,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-23 09:41:29,109 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 42 [2018-10-23 09:41:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:29,109 INFO L225 Difference]: With dead ends: 47 [2018-10-23 09:41:29,109 INFO L226 Difference]: Without dead ends: 44 [2018-10-23 09:41:29,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=1481, Unknown=0, NotChecked=0, Total=1560 [2018-10-23 09:41:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-23 09:41:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-23 09:41:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-23 09:41:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-23 09:41:29,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-23 09:41:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:29,114 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-23 09:41:29,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-23 09:41:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-23 09:41:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-23 09:41:29,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:29,115 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:29,115 INFO L424 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:29,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1447989941, now seen corresponding path program 36 times [2018-10-23 09:41:29,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:29,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:29,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:29,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:29,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:29,123 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:29,123 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:29,123 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:29,136 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:41:29,335 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-23 09:41:29,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:29,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:30,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:30,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-23 09:41:30,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-23 09:41:30,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-23 09:41:30,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-10-23 09:41:30,190 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 40 states. [2018-10-23 09:41:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:31,445 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-23 09:41:31,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-23 09:41:31,445 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 43 [2018-10-23 09:41:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:31,446 INFO L225 Difference]: With dead ends: 48 [2018-10-23 09:41:31,446 INFO L226 Difference]: Without dead ends: 45 [2018-10-23 09:41:31,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=1559, Unknown=0, NotChecked=0, Total=1640 [2018-10-23 09:41:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-23 09:41:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-23 09:41:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-23 09:41:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-23 09:41:31,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-23 09:41:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:31,451 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-23 09:41:31,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-23 09:41:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-23 09:41:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-23 09:41:31,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:31,452 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:31,452 INFO L424 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:31,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:31,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1938077685, now seen corresponding path program 37 times [2018-10-23 09:41:31,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:31,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:31,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:31,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:31,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:31,459 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:31,459 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:31,459 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:31,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:41:31,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:32,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:32,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-23 09:41:32,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-23 09:41:32,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-23 09:41:32,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-10-23 09:41:32,353 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 41 states. [2018-10-23 09:41:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:33,438 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-23 09:41:33,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-23 09:41:33,439 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 44 [2018-10-23 09:41:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:33,440 INFO L225 Difference]: With dead ends: 49 [2018-10-23 09:41:33,440 INFO L226 Difference]: Without dead ends: 46 [2018-10-23 09:41:33,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=1639, Unknown=0, NotChecked=0, Total=1722 [2018-10-23 09:41:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-23 09:41:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-23 09:41:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-23 09:41:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-23 09:41:33,445 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-23 09:41:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:33,445 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-23 09:41:33,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-23 09:41:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-23 09:41:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-23 09:41:33,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:33,446 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:33,446 INFO L424 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:33,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:33,446 INFO L82 PathProgramCache]: Analyzing trace with hash 49071435, now seen corresponding path program 38 times [2018-10-23 09:41:33,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:33,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:33,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:33,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:33,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:33,453 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:33,454 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:33,454 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:33,461 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:41:33,523 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:41:33,524 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:33,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:35,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:35,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-23 09:41:35,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-23 09:41:35,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-23 09:41:35,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-10-23 09:41:35,101 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 42 states. [2018-10-23 09:41:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:36,433 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-23 09:41:36,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-23 09:41:36,433 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 45 [2018-10-23 09:41:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:36,434 INFO L225 Difference]: With dead ends: 50 [2018-10-23 09:41:36,434 INFO L226 Difference]: Without dead ends: 47 [2018-10-23 09:41:36,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=1721, Unknown=0, NotChecked=0, Total=1806 [2018-10-23 09:41:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-23 09:41:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-23 09:41:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-23 09:41:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-23 09:41:36,440 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-23 09:41:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:36,440 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-23 09:41:36,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-23 09:41:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-23 09:41:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-23 09:41:36,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:36,441 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:36,441 INFO L424 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:36,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:36,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1521152011, now seen corresponding path program 39 times [2018-10-23 09:41:36,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:36,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:36,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:36,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:36,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:36,449 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:36,449 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:36,449 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:36,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:41:37,828 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-23 09:41:37,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:37,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:38,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:38,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-23 09:41:38,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-23 09:41:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-23 09:41:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-10-23 09:41:38,789 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 43 states. [2018-10-23 09:41:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:39,985 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-23 09:41:39,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-23 09:41:39,986 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2018-10-23 09:41:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:39,986 INFO L225 Difference]: With dead ends: 51 [2018-10-23 09:41:39,987 INFO L226 Difference]: Without dead ends: 48 [2018-10-23 09:41:39,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=1805, Unknown=0, NotChecked=0, Total=1892 [2018-10-23 09:41:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-23 09:41:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-23 09:41:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-23 09:41:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-23 09:41:39,992 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-23 09:41:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:39,992 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-23 09:41:39,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-23 09:41:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-23 09:41:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-23 09:41:39,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:39,993 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:39,993 INFO L424 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:39,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash -88990389, now seen corresponding path program 40 times [2018-10-23 09:41:39,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:39,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:39,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:40,001 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:40,001 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:40,001 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:40,016 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:41:40,489 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:41:40,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:40,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:41,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:41,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-23 09:41:41,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-23 09:41:41,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-23 09:41:41,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-10-23 09:41:41,664 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 44 states. [2018-10-23 09:41:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:42,956 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-23 09:41:42,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-23 09:41:42,957 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 47 [2018-10-23 09:41:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:42,957 INFO L225 Difference]: With dead ends: 52 [2018-10-23 09:41:42,957 INFO L226 Difference]: Without dead ends: 49 [2018-10-23 09:41:42,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=1891, Unknown=0, NotChecked=0, Total=1980 [2018-10-23 09:41:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-23 09:41:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-23 09:41:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-23 09:41:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-23 09:41:42,963 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-23 09:41:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:42,963 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-23 09:41:42,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-23 09:41:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-23 09:41:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-23 09:41:42,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:42,964 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:42,965 INFO L424 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:42,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1536202763, now seen corresponding path program 41 times [2018-10-23 09:41:42,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:42,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:42,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:42,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:42,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:42,972 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:42,973 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:42,973 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:42,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:41:43,078 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-23 09:41:43,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:43,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:44,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:44,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-23 09:41:44,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-23 09:41:44,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-23 09:41:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-10-23 09:41:44,152 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 45 states. [2018-10-23 09:41:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:45,509 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-23 09:41:45,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-23 09:41:45,510 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 48 [2018-10-23 09:41:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:45,510 INFO L225 Difference]: With dead ends: 53 [2018-10-23 09:41:45,511 INFO L226 Difference]: Without dead ends: 50 [2018-10-23 09:41:45,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=1979, Unknown=0, NotChecked=0, Total=2070 [2018-10-23 09:41:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-23 09:41:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-23 09:41:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-23 09:41:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-23 09:41:45,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-23 09:41:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-23 09:41:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-23 09:41:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-23 09:41:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-23 09:41:45,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:45,516 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:45,517 INFO L424 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:45,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:45,517 INFO L82 PathProgramCache]: Analyzing trace with hash 377582923, now seen corresponding path program 42 times [2018-10-23 09:41:45,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:45,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:45,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:45,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:45,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:45,524 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:45,525 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:45,525 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:45,540 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:41:46,048 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-23 09:41:46,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:46,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:47,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:47,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-23 09:41:47,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-23 09:41:47,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-23 09:41:47,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-10-23 09:41:47,088 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 46 states. [2018-10-23 09:41:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:48,468 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-23 09:41:48,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-23 09:41:48,468 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 49 [2018-10-23 09:41:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:48,469 INFO L225 Difference]: With dead ends: 54 [2018-10-23 09:41:48,469 INFO L226 Difference]: Without dead ends: 51 [2018-10-23 09:41:48,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=2069, Unknown=0, NotChecked=0, Total=2162 [2018-10-23 09:41:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-23 09:41:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-23 09:41:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-23 09:41:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-23 09:41:48,473 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-23 09:41:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:48,474 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-23 09:41:48,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-23 09:41:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-23 09:41:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-23 09:41:48,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:48,474 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:48,474 INFO L424 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:48,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1179893749, now seen corresponding path program 43 times [2018-10-23 09:41:48,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:48,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:48,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:48,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:48,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:48,481 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:48,482 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:48,482 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:48,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:41:48,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:49,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:49,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-23 09:41:49,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-23 09:41:49,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-23 09:41:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-10-23 09:41:49,704 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 47 states. [2018-10-23 09:41:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:51,332 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-23 09:41:51,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-23 09:41:51,333 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 50 [2018-10-23 09:41:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:51,333 INFO L225 Difference]: With dead ends: 55 [2018-10-23 09:41:51,333 INFO L226 Difference]: Without dead ends: 52 [2018-10-23 09:41:51,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=2161, Unknown=0, NotChecked=0, Total=2256 [2018-10-23 09:41:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-23 09:41:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-23 09:41:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-23 09:41:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-23 09:41:51,337 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-23 09:41:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:51,337 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-23 09:41:51,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-23 09:41:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-23 09:41:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-23 09:41:51,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:51,338 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:51,338 INFO L424 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:51,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2077936971, now seen corresponding path program 44 times [2018-10-23 09:41:51,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:51,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:51,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:51,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:41:51,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:51,349 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:51,349 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:51,350 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:51,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:41:51,463 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:41:51,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:51,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:52,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:52,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-23 09:41:52,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-23 09:41:52,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-23 09:41:52,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-10-23 09:41:52,683 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 48 states. [2018-10-23 09:41:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:54,239 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-23 09:41:54,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-23 09:41:54,240 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 51 [2018-10-23 09:41:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:54,240 INFO L225 Difference]: With dead ends: 56 [2018-10-23 09:41:54,241 INFO L226 Difference]: Without dead ends: 53 [2018-10-23 09:41:54,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=2255, Unknown=0, NotChecked=0, Total=2352 [2018-10-23 09:41:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-23 09:41:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-23 09:41:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-23 09:41:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-23 09:41:54,246 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-23 09:41:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:54,247 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-23 09:41:54,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-23 09:41:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-23 09:41:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-23 09:41:54,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:54,247 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:54,248 INFO L424 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:54,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:54,248 INFO L82 PathProgramCache]: Analyzing trace with hash -8525813, now seen corresponding path program 45 times [2018-10-23 09:41:54,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:54,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:54,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:54,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:54,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:54,255 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:54,255 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:54,255 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:54,262 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:41:56,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-23 09:41:56,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:41:56,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:41:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:41:58,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:41:58,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-23 09:41:58,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-23 09:41:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-23 09:41:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-10-23 09:41:58,114 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 49 states. [2018-10-23 09:41:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:41:59,669 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-23 09:41:59,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-23 09:41:59,670 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 52 [2018-10-23 09:41:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:41:59,671 INFO L225 Difference]: With dead ends: 57 [2018-10-23 09:41:59,671 INFO L226 Difference]: Without dead ends: 54 [2018-10-23 09:41:59,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=2351, Unknown=0, NotChecked=0, Total=2450 [2018-10-23 09:41:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-23 09:41:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-23 09:41:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-23 09:41:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-23 09:41:59,676 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-23 09:41:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:41:59,676 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-23 09:41:59,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-23 09:41:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-23 09:41:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-23 09:41:59,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:41:59,677 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:41:59,677 INFO L424 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:41:59,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:41:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash -264362677, now seen corresponding path program 46 times [2018-10-23 09:41:59,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:41:59,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:41:59,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:59,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:41:59,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:41:59,684 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:41:59,685 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:41:59,685 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:41:59,697 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:42:00,292 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:42:00,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:00,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:01,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:01,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-23 09:42:01,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-23 09:42:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-23 09:42:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-10-23 09:42:01,802 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 50 states. [2018-10-23 09:42:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:03,484 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-23 09:42:03,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-23 09:42:03,485 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 53 [2018-10-23 09:42:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:03,485 INFO L225 Difference]: With dead ends: 58 [2018-10-23 09:42:03,485 INFO L226 Difference]: Without dead ends: 55 [2018-10-23 09:42:03,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=2449, Unknown=0, NotChecked=0, Total=2550 [2018-10-23 09:42:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-23 09:42:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-23 09:42:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-23 09:42:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-23 09:42:03,490 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-23 09:42:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:03,490 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-23 09:42:03,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-23 09:42:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-23 09:42:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-23 09:42:03,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:03,490 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:03,491 INFO L424 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:03,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:03,491 INFO L82 PathProgramCache]: Analyzing trace with hash 394629131, now seen corresponding path program 47 times [2018-10-23 09:42:03,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:03,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:03,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:03,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:03,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:03,499 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:03,499 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:03,499 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:03,512 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:42:03,635 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-23 09:42:03,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:03,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:04,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:04,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-23 09:42:04,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-23 09:42:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-23 09:42:04,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-10-23 09:42:04,919 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 51 states. [2018-10-23 09:42:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:06,692 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-23 09:42:06,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-23 09:42:06,693 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 54 [2018-10-23 09:42:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:06,693 INFO L225 Difference]: With dead ends: 59 [2018-10-23 09:42:06,694 INFO L226 Difference]: Without dead ends: 56 [2018-10-23 09:42:06,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=2549, Unknown=0, NotChecked=0, Total=2652 [2018-10-23 09:42:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-23 09:42:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-23 09:42:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-23 09:42:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-23 09:42:06,699 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-23 09:42:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:06,700 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-23 09:42:06,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-23 09:42:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-23 09:42:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-23 09:42:06,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:06,700 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:06,700 INFO L424 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:06,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash -651461301, now seen corresponding path program 48 times [2018-10-23 09:42:06,701 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:06,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:06,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:06,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:06,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:06,707 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:06,708 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:06,708 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:06,715 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:42:07,390 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-23 09:42:07,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:07,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:08,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:08,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-23 09:42:08,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-23 09:42:08,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-23 09:42:08,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-10-23 09:42:08,693 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 52 states. [2018-10-23 09:42:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:10,494 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-23 09:42:10,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-23 09:42:10,494 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 55 [2018-10-23 09:42:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:10,495 INFO L225 Difference]: With dead ends: 60 [2018-10-23 09:42:10,495 INFO L226 Difference]: Without dead ends: 57 [2018-10-23 09:42:10,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=2651, Unknown=0, NotChecked=0, Total=2756 [2018-10-23 09:42:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-23 09:42:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-23 09:42:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-23 09:42:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-23 09:42:10,500 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-23 09:42:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:10,500 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-23 09:42:10,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-23 09:42:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-23 09:42:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-23 09:42:10,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:10,501 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:10,501 INFO L424 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:10,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1279473675, now seen corresponding path program 49 times [2018-10-23 09:42:10,502 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:10,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:10,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:10,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:10,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:10,510 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:10,510 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:10,510 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:10,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:42:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:42:10,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:12,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:12,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-23 09:42:12,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-23 09:42:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-23 09:42:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-10-23 09:42:12,461 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 53 states. [2018-10-23 09:42:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:14,310 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-23 09:42:14,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-23 09:42:14,310 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 56 [2018-10-23 09:42:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:14,311 INFO L225 Difference]: With dead ends: 61 [2018-10-23 09:42:14,311 INFO L226 Difference]: Without dead ends: 58 [2018-10-23 09:42:14,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=107, Invalid=2755, Unknown=0, NotChecked=0, Total=2862 [2018-10-23 09:42:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-23 09:42:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-23 09:42:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-23 09:42:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-23 09:42:14,318 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-23 09:42:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:14,318 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-23 09:42:14,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-23 09:42:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-23 09:42:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-23 09:42:14,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:14,319 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:14,319 INFO L424 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:14,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1008915787, now seen corresponding path program 50 times [2018-10-23 09:42:14,320 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:14,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:14,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:14,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:42:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:14,327 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:14,327 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:14,327 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:14,342 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:42:14,474 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:42:14,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:14,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:15,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:15,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-23 09:42:15,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-23 09:42:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-23 09:42:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-10-23 09:42:15,861 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 54 states. [2018-10-23 09:42:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:17,954 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-23 09:42:17,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-23 09:42:17,954 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 57 [2018-10-23 09:42:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:17,955 INFO L225 Difference]: With dead ends: 62 [2018-10-23 09:42:17,955 INFO L226 Difference]: Without dead ends: 59 [2018-10-23 09:42:17,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=109, Invalid=2861, Unknown=0, NotChecked=0, Total=2970 [2018-10-23 09:42:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-23 09:42:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-23 09:42:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-23 09:42:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-23 09:42:17,960 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-23 09:42:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:17,960 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-23 09:42:17,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-23 09:42:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-23 09:42:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-23 09:42:17,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:17,961 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:17,961 INFO L424 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:17,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1211555851, now seen corresponding path program 51 times [2018-10-23 09:42:17,962 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:17,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:17,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:17,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:17,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:17,970 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:17,970 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:17,970 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:17,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:42:22,458 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-23 09:42:22,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:22,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:24,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:24,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-23 09:42:24,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-23 09:42:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-23 09:42:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-10-23 09:42:24,007 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 55 states. [2018-10-23 09:42:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:26,053 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-23 09:42:26,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-23 09:42:26,053 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 58 [2018-10-23 09:42:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:26,054 INFO L225 Difference]: With dead ends: 63 [2018-10-23 09:42:26,054 INFO L226 Difference]: Without dead ends: 60 [2018-10-23 09:42:26,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=2969, Unknown=0, NotChecked=0, Total=3080 [2018-10-23 09:42:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-23 09:42:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-23 09:42:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-23 09:42:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-23 09:42:26,059 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-23 09:42:26,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:26,059 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-23 09:42:26,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-23 09:42:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-23 09:42:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-23 09:42:26,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:26,060 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:26,060 INFO L424 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:26,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1096536757, now seen corresponding path program 52 times [2018-10-23 09:42:26,061 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:26,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:26,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:26,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:26,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:26,068 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:26,069 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:26,069 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:26,080 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:42:26,785 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:42:26,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:26,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:28,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:28,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-23 09:42:28,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-23 09:42:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-23 09:42:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-10-23 09:42:28,360 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 56 states. [2018-10-23 09:42:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:30,410 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-23 09:42:30,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-23 09:42:30,411 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 59 [2018-10-23 09:42:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:30,412 INFO L225 Difference]: With dead ends: 64 [2018-10-23 09:42:30,412 INFO L226 Difference]: Without dead ends: 61 [2018-10-23 09:42:30,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=3079, Unknown=0, NotChecked=0, Total=3192 [2018-10-23 09:42:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-23 09:42:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-23 09:42:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-23 09:42:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-23 09:42:30,416 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-23 09:42:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:30,416 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-23 09:42:30,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-23 09:42:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-23 09:42:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-23 09:42:30,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:30,417 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:30,417 INFO L424 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:30,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:30,417 INFO L82 PathProgramCache]: Analyzing trace with hash 367036427, now seen corresponding path program 53 times [2018-10-23 09:42:30,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:30,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:30,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:30,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:30,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:30,425 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:30,425 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:30,425 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:30,438 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:42:30,593 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-23 09:42:30,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:30,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:32,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:32,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-23 09:42:32,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-23 09:42:32,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-23 09:42:32,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-10-23 09:42:32,440 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 57 states. [2018-10-23 09:42:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:34,576 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-23 09:42:34,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-23 09:42:34,576 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 60 [2018-10-23 09:42:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:34,577 INFO L225 Difference]: With dead ends: 65 [2018-10-23 09:42:34,577 INFO L226 Difference]: Without dead ends: 62 [2018-10-23 09:42:34,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=3191, Unknown=0, NotChecked=0, Total=3306 [2018-10-23 09:42:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-23 09:42:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-23 09:42:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-23 09:42:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-23 09:42:34,583 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-23 09:42:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:34,584 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-23 09:42:34,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-23 09:42:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-23 09:42:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-23 09:42:34,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:34,584 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:34,585 INFO L424 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:34,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1506835125, now seen corresponding path program 54 times [2018-10-23 09:42:34,585 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:34,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:34,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:34,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:34,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:34,593 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:34,593 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:34,593 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-23 09:42:34,608 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:35,946 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-23 09:42:35,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:35,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:37,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:37,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-23 09:42:37,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-23 09:42:37,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-23 09:42:37,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-10-23 09:42:37,828 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 58 states. [2018-10-23 09:42:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:40,038 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-23 09:42:40,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-23 09:42:40,038 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 61 [2018-10-23 09:42:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:40,039 INFO L225 Difference]: With dead ends: 66 [2018-10-23 09:42:40,039 INFO L226 Difference]: Without dead ends: 63 [2018-10-23 09:42:40,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=117, Invalid=3305, Unknown=0, NotChecked=0, Total=3422 [2018-10-23 09:42:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-23 09:42:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-23 09:42:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-23 09:42:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-23 09:42:40,044 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-23 09:42:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:40,045 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-23 09:42:40,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-23 09:42:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-23 09:42:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-23 09:42:40,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:40,045 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:40,046 INFO L424 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:40,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:40,046 INFO L82 PathProgramCache]: Analyzing trace with hash 532688907, now seen corresponding path program 55 times [2018-10-23 09:42:40,046 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:40,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:40,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:40,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:40,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:40,054 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:40,054 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:40,054 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-23 09:42:40,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:42:40,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:41,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:41,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-23 09:42:41,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-23 09:42:41,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-23 09:42:41,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-10-23 09:42:41,834 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 59 states. [2018-10-23 09:42:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:44,341 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-23 09:42:44,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-23 09:42:44,342 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 62 [2018-10-23 09:42:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:44,342 INFO L225 Difference]: With dead ends: 67 [2018-10-23 09:42:44,342 INFO L226 Difference]: Without dead ends: 64 [2018-10-23 09:42:44,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=3421, Unknown=0, NotChecked=0, Total=3540 [2018-10-23 09:42:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-23 09:42:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-23 09:42:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-23 09:42:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-23 09:42:44,348 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-23 09:42:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:44,348 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-23 09:42:44,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-23 09:42:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-23 09:42:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-23 09:42:44,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:44,349 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:44,349 INFO L424 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:44,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:44,349 INFO L82 PathProgramCache]: Analyzing trace with hash -666575541, now seen corresponding path program 56 times [2018-10-23 09:42:44,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:44,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:44,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:44,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:42:44,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:44,357 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:44,357 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:44,357 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:44,372 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:42:44,515 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:42:44,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:44,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:46,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:46,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-23 09:42:46,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-23 09:42:46,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-23 09:42:46,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-10-23 09:42:46,297 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 60 states. [2018-10-23 09:42:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:42:48,832 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-23 09:42:48,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-23 09:42:48,833 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 63 [2018-10-23 09:42:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:42:48,834 INFO L225 Difference]: With dead ends: 68 [2018-10-23 09:42:48,834 INFO L226 Difference]: Without dead ends: 65 [2018-10-23 09:42:48,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=3539, Unknown=0, NotChecked=0, Total=3660 [2018-10-23 09:42:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-23 09:42:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-23 09:42:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-23 09:42:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-23 09:42:48,838 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-23 09:42:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:42:48,839 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-23 09:42:48,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-23 09:42:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-23 09:42:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-23 09:42:48,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:42:48,839 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:42:48,839 INFO L424 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:42:48,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:42:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash 810932235, now seen corresponding path program 57 times [2018-10-23 09:42:48,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:42:48,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:42:48,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:48,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:42:48,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:42:48,848 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:42:48,848 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:42:48,849 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:42:48,865 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:42:56,610 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-23 09:42:56,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:42:56,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:42:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:42:58,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:42:58,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-23 09:42:58,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-23 09:42:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-23 09:42:58,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-10-23 09:42:58,662 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 61 states. [2018-10-23 09:43:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:01,160 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-23 09:43:01,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-23 09:43:01,160 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 64 [2018-10-23 09:43:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:01,161 INFO L225 Difference]: With dead ends: 69 [2018-10-23 09:43:01,161 INFO L226 Difference]: Without dead ends: 66 [2018-10-23 09:43:01,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=123, Invalid=3659, Unknown=0, NotChecked=0, Total=3782 [2018-10-23 09:43:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-23 09:43:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-23 09:43:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-23 09:43:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-23 09:43:01,166 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-23 09:43:01,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:01,166 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-23 09:43:01,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-23 09:43:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-23 09:43:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-23 09:43:01,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:01,167 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:01,167 INFO L424 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:01,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash -630966965, now seen corresponding path program 58 times [2018-10-23 09:43:01,167 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:01,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:01,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:01,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:01,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:01,175 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:01,175 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:01,175 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:01,190 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:43:02,064 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:43:02,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:02,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:04,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:04,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-23 09:43:04,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-23 09:43:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-23 09:43:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-10-23 09:43:04,045 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 62 states. [2018-10-23 09:43:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:06,589 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-23 09:43:06,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-23 09:43:06,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 65 [2018-10-23 09:43:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:06,590 INFO L225 Difference]: With dead ends: 70 [2018-10-23 09:43:06,590 INFO L226 Difference]: Without dead ends: 67 [2018-10-23 09:43:06,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=3781, Unknown=0, NotChecked=0, Total=3906 [2018-10-23 09:43:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-23 09:43:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-23 09:43:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-23 09:43:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-23 09:43:06,596 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-23 09:43:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:06,596 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-23 09:43:06,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-23 09:43:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-23 09:43:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-23 09:43:06,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:06,597 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:06,597 INFO L424 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:06,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1914798091, now seen corresponding path program 59 times [2018-10-23 09:43:06,598 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:06,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:06,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:06,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:06,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:06,604 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:06,604 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:06,604 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:06,615 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:43:06,816 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-23 09:43:06,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:06,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:09,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:09,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-23 09:43:09,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-23 09:43:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-23 09:43:09,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-10-23 09:43:09,558 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 63 states. [2018-10-23 09:43:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:12,148 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-23 09:43:12,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-23 09:43:12,148 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 66 [2018-10-23 09:43:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:12,149 INFO L225 Difference]: With dead ends: 71 [2018-10-23 09:43:12,149 INFO L226 Difference]: Without dead ends: 68 [2018-10-23 09:43:12,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=127, Invalid=3905, Unknown=0, NotChecked=0, Total=4032 [2018-10-23 09:43:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-23 09:43:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-23 09:43:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-23 09:43:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-23 09:43:12,156 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-23 09:43:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:12,156 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-23 09:43:12,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-23 09:43:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-23 09:43:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-23 09:43:12,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:12,157 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:12,157 INFO L424 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:12,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -770863797, now seen corresponding path program 60 times [2018-10-23 09:43:12,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:12,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:12,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:12,165 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:12,166 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:12,166 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:12,180 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:43:14,055 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-23 09:43:14,055 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:14,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:15,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:15,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-23 09:43:15,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-23 09:43:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-23 09:43:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-10-23 09:43:15,985 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 64 states. [2018-10-23 09:43:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:18,909 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-23 09:43:18,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-23 09:43:18,909 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 67 [2018-10-23 09:43:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:18,910 INFO L225 Difference]: With dead ends: 72 [2018-10-23 09:43:18,910 INFO L226 Difference]: Without dead ends: 69 [2018-10-23 09:43:18,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=4031, Unknown=0, NotChecked=0, Total=4160 [2018-10-23 09:43:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-23 09:43:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-23 09:43:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-23 09:43:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-23 09:43:18,916 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-23 09:43:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:18,916 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-23 09:43:18,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-23 09:43:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-23 09:43:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-23 09:43:18,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:18,917 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:18,917 INFO L424 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:18,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:18,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1872963595, now seen corresponding path program 61 times [2018-10-23 09:43:18,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:18,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:18,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:18,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:18,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:18,923 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:18,923 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:18,923 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:18,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:19,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:21,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:21,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-23 09:43:21,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-23 09:43:21,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-23 09:43:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-10-23 09:43:21,106 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 65 states. [2018-10-23 09:43:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:24,101 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-23 09:43:24,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-23 09:43:24,101 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 68 [2018-10-23 09:43:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:24,102 INFO L225 Difference]: With dead ends: 73 [2018-10-23 09:43:24,102 INFO L226 Difference]: Without dead ends: 70 [2018-10-23 09:43:24,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=131, Invalid=4159, Unknown=0, NotChecked=0, Total=4290 [2018-10-23 09:43:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-23 09:43:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-23 09:43:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-23 09:43:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-23 09:43:24,107 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-23 09:43:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:24,107 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-23 09:43:24,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-23 09:43:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-23 09:43:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-23 09:43:24,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:24,108 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:24,108 INFO L424 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:24,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:24,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2067733173, now seen corresponding path program 62 times [2018-10-23 09:43:24,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:24,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:24,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:24,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:24,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:24,116 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:24,116 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:24,116 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:24,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:43:24,311 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:43:24,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:24,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:26,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:26,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-23 09:43:26,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-23 09:43:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-23 09:43:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-10-23 09:43:26,649 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 66 states. [2018-10-23 09:43:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:29,728 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-23 09:43:29,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-23 09:43:29,729 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 69 [2018-10-23 09:43:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:29,730 INFO L225 Difference]: With dead ends: 74 [2018-10-23 09:43:29,730 INFO L226 Difference]: Without dead ends: 71 [2018-10-23 09:43:29,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=133, Invalid=4289, Unknown=0, NotChecked=0, Total=4422 [2018-10-23 09:43:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-23 09:43:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-23 09:43:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-23 09:43:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-23 09:43:29,735 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-23 09:43:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:29,735 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-23 09:43:29,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-23 09:43:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-23 09:43:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-23 09:43:29,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:29,736 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:29,736 INFO L424 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:29,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 324718603, now seen corresponding path program 63 times [2018-10-23 09:43:29,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:29,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:29,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:29,745 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:29,745 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:29,745 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:29,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:43:42,612 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-23 09:43:42,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:42,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:44,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:44,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-23 09:43:44,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-23 09:43:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-23 09:43:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-10-23 09:43:44,936 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 67 states. [2018-10-23 09:43:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:47,970 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-23 09:43:47,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-23 09:43:47,970 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 70 [2018-10-23 09:43:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:47,971 INFO L225 Difference]: With dead ends: 75 [2018-10-23 09:43:47,971 INFO L226 Difference]: Without dead ends: 72 [2018-10-23 09:43:47,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=135, Invalid=4421, Unknown=0, NotChecked=0, Total=4556 [2018-10-23 09:43:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-23 09:43:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-23 09:43:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-23 09:43:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-23 09:43:47,977 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-23 09:43:47,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:47,978 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-23 09:43:47,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-23 09:43:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-23 09:43:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-23 09:43:47,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:47,978 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:47,979 INFO L424 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:47,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:47,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1476279627, now seen corresponding path program 64 times [2018-10-23 09:43:47,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:47,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:47,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:47,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:47,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:47,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:47,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:47,987 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:47,995 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:43:49,060 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:43:49,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:49,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:51,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:51,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-23 09:43:51,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-23 09:43:51,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-23 09:43:51,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-10-23 09:43:51,235 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 68 states. [2018-10-23 09:43:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:54,581 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-23 09:43:54,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-23 09:43:54,582 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 71 [2018-10-23 09:43:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:54,582 INFO L225 Difference]: With dead ends: 76 [2018-10-23 09:43:54,583 INFO L226 Difference]: Without dead ends: 73 [2018-10-23 09:43:54,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2018-10-23 09:43:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-23 09:43:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-23 09:43:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-23 09:43:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-23 09:43:54,588 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-23 09:43:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:54,588 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-23 09:43:54,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-23 09:43:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-23 09:43:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-23 09:43:54,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:54,589 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:54,589 INFO L424 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:54,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:54,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1480034293, now seen corresponding path program 65 times [2018-10-23 09:43:54,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:54,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:54,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:54,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:54,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:54,598 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:43:54,598 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:43:54,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-23 09:43:54,612 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:43:54,893 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-23 09:43:54,893 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:54,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:57,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:43:57,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-23 09:43:57,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-23 09:43:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-23 09:43:57,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-10-23 09:43:57,051 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 69 states. [2018-10-23 09:44:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:00,501 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-23 09:44:00,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-23 09:44:00,501 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 72 [2018-10-23 09:44:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:00,502 INFO L225 Difference]: With dead ends: 77 [2018-10-23 09:44:00,503 INFO L226 Difference]: Without dead ends: 74 [2018-10-23 09:44:00,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2018-10-23 09:44:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-23 09:44:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-23 09:44:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-23 09:44:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-23 09:44:00,508 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-23 09:44:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:00,508 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-23 09:44:00,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-23 09:44:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-23 09:44:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-23 09:44:00,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:00,509 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:00,510 INFO L424 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:00,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:00,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1363514699, now seen corresponding path program 66 times [2018-10-23 09:44:00,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:00,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:00,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:00,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:00,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:00,519 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:00,520 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:00,520 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-23 09:44:00,535 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:04,154 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-23 09:44:04,155 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:04,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:06,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:44:06,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-23 09:44:06,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-23 09:44:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-23 09:44:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-10-23 09:44:06,612 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 70 states. [2018-10-23 09:44:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:10,189 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-23 09:44:10,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-23 09:44:10,190 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 73 [2018-10-23 09:44:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:10,191 INFO L225 Difference]: With dead ends: 78 [2018-10-23 09:44:10,191 INFO L226 Difference]: Without dead ends: 75 [2018-10-23 09:44:10,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2018-10-23 09:44:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-23 09:44:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-23 09:44:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-23 09:44:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-23 09:44:10,198 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-23 09:44:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-23 09:44:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-23 09:44:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-23 09:44:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-23 09:44:10,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:10,199 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:10,200 INFO L424 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:10,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash -680779765, now seen corresponding path program 67 times [2018-10-23 09:44:10,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:10,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:10,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:10,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:10,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:10,208 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:10,208 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:10,208 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:10,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:44:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:44:10,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:12,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:44:12,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-23 09:44:12,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-23 09:44:12,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-23 09:44:12,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-10-23 09:44:12,813 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 71 states. [2018-10-23 09:44:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:16,422 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-23 09:44:16,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-23 09:44:16,423 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 74 [2018-10-23 09:44:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:16,424 INFO L225 Difference]: With dead ends: 79 [2018-10-23 09:44:16,424 INFO L226 Difference]: Without dead ends: 76 [2018-10-23 09:44:16,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2018-10-23 09:44:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-23 09:44:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-23 09:44:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-23 09:44:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-23 09:44:16,432 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-23 09:44:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:16,432 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-23 09:44:16,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-23 09:44:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-23 09:44:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-23 09:44:16,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:16,433 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:16,433 INFO L424 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:16,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:16,433 INFO L82 PathProgramCache]: Analyzing trace with hash 370601291, now seen corresponding path program 68 times [2018-10-23 09:44:16,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:16,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:16,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:16,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:44:16,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:16,443 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:16,444 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:16,444 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:16,459 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:44:16,816 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:44:16,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:16,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:19,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:44:19,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-23 09:44:19,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-23 09:44:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-23 09:44:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-10-23 09:44:19,543 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 72 states. [2018-10-23 09:44:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:23,166 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-23 09:44:23,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-23 09:44:23,166 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 75 [2018-10-23 09:44:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:23,167 INFO L225 Difference]: With dead ends: 80 [2018-10-23 09:44:23,168 INFO L226 Difference]: Without dead ends: 77 [2018-10-23 09:44:23,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=145, Invalid=5111, Unknown=0, NotChecked=0, Total=5256 [2018-10-23 09:44:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-23 09:44:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-23 09:44:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-23 09:44:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-23 09:44:23,175 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-23 09:44:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:23,175 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-23 09:44:23,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-23 09:44:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-23 09:44:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-23 09:44:23,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:23,176 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:23,176 INFO L424 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:23,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:23,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1396324341, now seen corresponding path program 69 times [2018-10-23 09:44:23,177 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:23,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:23,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:23,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:23,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:23,187 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:23,187 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:23,187 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:23,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:44:44,463 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-23 09:44:44,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:44,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:47,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:44:47,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-23 09:44:47,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-23 09:44:47,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-23 09:44:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-10-23 09:44:47,199 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 73 states. [2018-10-23 09:44:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:50,958 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-23 09:44:50,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-23 09:44:50,958 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 76 [2018-10-23 09:44:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:50,959 INFO L225 Difference]: With dead ends: 81 [2018-10-23 09:44:50,960 INFO L226 Difference]: Without dead ends: 78 [2018-10-23 09:44:50,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=147, Invalid=5255, Unknown=0, NotChecked=0, Total=5402 [2018-10-23 09:44:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-23 09:44:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-23 09:44:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-23 09:44:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-23 09:44:50,966 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-23 09:44:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:50,967 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-23 09:44:50,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-23 09:44:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-23 09:44:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-23 09:44:50,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:50,968 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:50,968 INFO L424 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:50,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash -336444085, now seen corresponding path program 70 times [2018-10-23 09:44:50,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:50,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:50,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:50,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:50,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:50,976 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:50,976 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:50,976 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:50,985 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:44:52,244 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:44:52,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:52,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:54,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-23 09:44:54,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-23 09:44:54,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-23 09:44:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-23 09:44:54,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-10-23 09:44:54,926 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 74 states. [2018-10-23 09:44:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:58,819 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-23 09:44:58,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-23 09:44:58,819 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 77 [2018-10-23 09:44:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:58,820 INFO L225 Difference]: With dead ends: 82 [2018-10-23 09:44:58,820 INFO L226 Difference]: Without dead ends: 79 [2018-10-23 09:44:58,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=149, Invalid=5401, Unknown=0, NotChecked=0, Total=5550 [2018-10-23 09:44:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-23 09:44:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-23 09:44:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-23 09:44:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-23 09:44:58,826 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-23 09:44:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:58,826 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-23 09:44:58,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-23 09:44:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-23 09:44:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-23 09:44:58,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:58,827 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:58,827 INFO L424 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:58,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:58,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1839894517, now seen corresponding path program 71 times [2018-10-23 09:44:58,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:58,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:58,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:58,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:58,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:58,835 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 09:44:58,835 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 09:44:58,835 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:44:58,850 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:44:59,193 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-23 09:44:59,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:59,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-23 09:45:01,164 WARN L187 SmtUtils]: Removed 3 from assertion stack [2018-10-23 09:45:01,164 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 09:45:01,365 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 09:45:01,365 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 09:45:01,371 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 09:45:01,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:01 BoogieIcfgContainer [2018-10-23 09:45:01,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:45:01,372 INFO L168 Benchmark]: Toolchain (without parser) took 255081.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 871.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -630.3 MB). Peak memory consumption was 241.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:45:01,374 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:45:01,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:45:01,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:45:01,375 INFO L168 Benchmark]: Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:45:01,375 INFO L168 Benchmark]: RCFGBuilder took 427.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:45:01,376 INFO L168 Benchmark]: TraceAbstraction took 254345.95 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 140.0 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.9 MB). Peak memory consumption was 269.9 MB. Max. memory is 7.1 GB. [2018-10-23 09:45:01,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 427.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254345.95 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 140.0 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.9 MB). Peak memory consumption was 269.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 44). Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 71,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, 11 locations, 1 error locations. TIMEOUT Result, 254.2s OverallTime, 72 OverallIterations, 71 TraceHistogramMax, 98.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 430 SDtfs, 85 SDslu, 10435 SDs, 0 SdLazy, 132417 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2981 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 2698 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 80.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 71 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 69.1s SatisfiabilityAnalysisTime, 79.9s InterpolantComputationTime, 2982 NumberOfCodeBlocks, 2982 NumberOfCodeBlocksAsserted, 713 NumberOfCheckSat, 2911 ConstructedInterpolants, 0 QuantifiedInterpolants, 973185 SizeOfPredicates, 352 NumberOfNonLiveVariables, 13987 ConjunctsInSsa, 10713 ConjunctsInUnsatCore, 71 InterpolantComputations, 1 PerfectInterpolantSequences, 0/59640 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown