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_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:59:58,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:59:58,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:59:58,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:59:58,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:59:58,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:59:58,440 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:59:58,442 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:59:58,444 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:59:58,444 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:59:58,445 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:59:58,446 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:59:58,447 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:59:58,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:59:58,449 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:59:58,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:59:58,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:59:58,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:59:58,455 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:59:58,456 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:59:58,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:59:58,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:59:58,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:59:58,470 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 [2018-10-24 11:59:58,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:59:58,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:59:58,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:59:58,501 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:59:58,502 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:59:58,502 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:59:58,502 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:59:58,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:59:58,503 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:59:58,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:59:58,504 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:59:58,504 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:59:58,504 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:59:58,504 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:59:58,505 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:59:58,505 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:59:58,505 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:59:58,505 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:59:58,505 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:59:58,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:59:58,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:59:58,507 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:59:58,507 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:59:58,508 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:59:58,508 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:59:58,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:59:58,508 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:59:58,508 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:59:58,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:59:58,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:59:58,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:59:58,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:59:58,599 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:59:58,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-10-24 11:59:58,664 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64d9e9291/9ead6daf5e3c4099ab29e7633617b93c/FLAGfc3067f52 [2018-10-24 11:59:59,127 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:59:59,128 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-10-24 11:59:59,139 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64d9e9291/9ead6daf5e3c4099ab29e7633617b93c/FLAGfc3067f52 [2018-10-24 11:59:59,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64d9e9291/9ead6daf5e3c4099ab29e7633617b93c [2018-10-24 11:59:59,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:59:59,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:59:59,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:59:59,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:59:59,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:59:59,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e422f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59, skipping insertion in model container [2018-10-24 11:59:59,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:59:59,219 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:59:59,392 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:59:59,396 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:59:59,413 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:59:59,429 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:59:59,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59 WrapperNode [2018-10-24 11:59:59,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:59:59,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:59:59,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:59:59,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:59:59,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:59:59,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:59:59,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:59:59,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:59:59,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (1/1) ... [2018-10-24 11:59:59,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:59:59,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:59:59,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:59:59,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:59:59,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (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 [2018-10-24 11:59:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:59:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:59:59,812 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:59:59,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:59:59 BoogieIcfgContainer [2018-10-24 11:59:59,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:59:59,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:59:59,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:59:59,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:59:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:59:59" (1/3) ... [2018-10-24 11:59:59,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25923603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:59:59, skipping insertion in model container [2018-10-24 11:59:59,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:59" (2/3) ... [2018-10-24 11:59:59,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25923603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:59:59, skipping insertion in model container [2018-10-24 11:59:59,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:59:59" (3/3) ... [2018-10-24 11:59:59,821 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-10-24 11:59:59,832 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:59:59,840 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:59:59,855 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:59:59,884 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:59:59,885 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:59:59,885 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:59:59,885 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:59:59,885 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:59:59,885 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:59:59,885 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:59:59,885 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:59:59,886 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:59:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-24 11:59:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-24 11:59:59,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:59:59,907 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:59:59,909 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:59:59,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:59:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1807151048, now seen corresponding path program 1 times [2018-10-24 11:59:59,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:59:59,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:59:59,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:59,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:59:59,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:00,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:00:00,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:00:00,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:00:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:00:00,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:00:00,057 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-10-24 12:00:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:00,075 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-10-24 12:00:00,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:00:00,076 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-10-24 12:00:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:00,090 INFO L225 Difference]: With dead ends: 22 [2018-10-24 12:00:00,090 INFO L226 Difference]: Without dead ends: 10 [2018-10-24 12:00:00,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:00:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-24 12:00:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-24 12:00:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-24 12:00:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-24 12:00:00,127 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-10-24 12:00:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:00,127 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-24 12:00:00,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:00:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-24 12:00:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-24 12:00:00,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:00,128 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:00,129 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:00,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash 178554705, now seen corresponding path program 1 times [2018-10-24 12:00:00,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:00,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:00,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:00,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:00,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:00,140 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:00,140 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:00,140 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 [2018-10-24 12:00:00,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:00,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:00,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:00:00,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 12:00:00,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 12:00:00,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 12:00:00,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 12:00:00,350 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-10-24 12:00:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:00,421 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-24 12:00:00,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 12:00:00,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-24 12:00:00,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:00,423 INFO L225 Difference]: With dead ends: 17 [2018-10-24 12:00:00,423 INFO L226 Difference]: Without dead ends: 13 [2018-10-24 12:00:00,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 12:00:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-24 12:00:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-10-24 12:00:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-24 12:00:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-24 12:00:00,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2018-10-24 12:00:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:00,428 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-24 12:00:00,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 12:00:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-24 12:00:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:00:00,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:00,429 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:00,430 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:00,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash -494066964, now seen corresponding path program 1 times [2018-10-24 12:00:00,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:00,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:00,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:00,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:00,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:00,442 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:00,442 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:00,442 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 [2018-10-24 12:00:00,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:00,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:00,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:00,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-24 12:00:00,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:00:00,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:00:00,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:00:00,719 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-10-24 12:00:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:01,078 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-24 12:00:01,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:00:01,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-24 12:00:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:01,080 INFO L225 Difference]: With dead ends: 19 [2018-10-24 12:00:01,080 INFO L226 Difference]: Without dead ends: 15 [2018-10-24 12:00:01,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:00:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-24 12:00:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-24 12:00:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-24 12:00:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-24 12:00:01,086 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-10-24 12:00:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:01,087 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-24 12:00:01,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:00:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-24 12:00:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 12:00:01,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:01,088 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:01,088 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:01,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:01,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1751194993, now seen corresponding path program 2 times [2018-10-24 12:00:01,090 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:01,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:01,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:01,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:01,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:01,100 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:01,100 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:01,100 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 [2018-10-24 12:00:01,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:01,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:01,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:01,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:01,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:01,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-24 12:00:01,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 12:00:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 12:00:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:00:01,421 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-10-24 12:00:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:01,588 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-24 12:00:01,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 12:00:01,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-10-24 12:00:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:01,590 INFO L225 Difference]: With dead ends: 22 [2018-10-24 12:00:01,591 INFO L226 Difference]: Without dead ends: 18 [2018-10-24 12:00:01,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-24 12:00:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-24 12:00:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-24 12:00:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-24 12:00:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-24 12:00:01,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-10-24 12:00:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:01,596 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-24 12:00:01,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 12:00:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-24 12:00:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 12:00:01,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:01,598 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:01,598 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:01,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash 529488076, now seen corresponding path program 3 times [2018-10-24 12:00:01,599 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:01,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:01,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:01,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:01,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:01,612 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:01,612 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:01,612 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 [2018-10-24 12:00:01,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:01,631 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-24 12:00:01,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:01,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:02,004 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 12:00:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:02,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:02,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-24 12:00:02,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:00:02,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:00:02,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-24 12:00:02,227 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2018-10-24 12:00:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:02,398 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-24 12:00:02,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 12:00:02,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-10-24 12:00:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:02,401 INFO L225 Difference]: With dead ends: 25 [2018-10-24 12:00:02,401 INFO L226 Difference]: Without dead ends: 21 [2018-10-24 12:00:02,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-10-24 12:00:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-24 12:00:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-24 12:00:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-24 12:00:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-24 12:00:02,406 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-10-24 12:00:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:02,406 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-24 12:00:02,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:00:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-24 12:00:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 12:00:02,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:02,408 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:02,408 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:02,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 211590033, now seen corresponding path program 4 times [2018-10-24 12:00:02,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:02,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:02,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:02,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:02,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:02,419 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:02,419 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:02,419 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 [2018-10-24 12:00:02,455 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:00:02,496 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:02,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:02,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:02,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:02,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-24 12:00:02,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 12:00:02,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 12:00:02,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-24 12:00:02,801 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2018-10-24 12:00:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:03,075 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-24 12:00:03,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 12:00:03,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-10-24 12:00:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:03,076 INFO L225 Difference]: With dead ends: 28 [2018-10-24 12:00:03,077 INFO L226 Difference]: Without dead ends: 24 [2018-10-24 12:00:03,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-10-24 12:00:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-24 12:00:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-24 12:00:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-24 12:00:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-24 12:00:03,081 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-10-24 12:00:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:03,082 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-24 12:00:03,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 12:00:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-24 12:00:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 12:00:03,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:03,083 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:03,083 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:03,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:03,084 INFO L82 PathProgramCache]: Analyzing trace with hash 113878700, now seen corresponding path program 5 times [2018-10-24 12:00:03,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:03,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:03,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:03,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:03,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:03,096 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:03,096 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:03,096 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 [2018-10-24 12:00:03,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:00:03,127 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-24 12:00:03,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:03,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:03,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:03,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-24 12:00:03,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 12:00:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 12:00:03,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-10-24 12:00:03,413 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 15 states. [2018-10-24 12:00:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:03,648 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-24 12:00:03,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 12:00:03,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2018-10-24 12:00:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:03,651 INFO L225 Difference]: With dead ends: 31 [2018-10-24 12:00:03,651 INFO L226 Difference]: Without dead ends: 27 [2018-10-24 12:00:03,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-10-24 12:00:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-24 12:00:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-24 12:00:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-24 12:00:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-24 12:00:03,656 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2018-10-24 12:00:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:03,657 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-24 12:00:03,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 12:00:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-24 12:00:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 12:00:03,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:03,658 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:03,659 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:03,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:03,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1183383985, now seen corresponding path program 6 times [2018-10-24 12:00:03,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:03,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:03,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:03,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:03,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:03,671 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:03,671 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:03,671 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 [2018-10-24 12:00:03,687 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:00:03,706 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-24 12:00:03,707 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:03,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:04,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:04,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-24 12:00:04,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 12:00:04,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 12:00:04,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-10-24 12:00:04,128 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 17 states. [2018-10-24 12:00:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:04,657 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-24 12:00:04,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 12:00:04,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2018-10-24 12:00:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:04,660 INFO L225 Difference]: With dead ends: 34 [2018-10-24 12:00:04,660 INFO L226 Difference]: Without dead ends: 30 [2018-10-24 12:00:04,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:00:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-24 12:00:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-24 12:00:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-24 12:00:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-24 12:00:04,665 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2018-10-24 12:00:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:04,665 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-24 12:00:04,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 12:00:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-24 12:00:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 12:00:04,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:04,667 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:04,667 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:04,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:04,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1547039604, now seen corresponding path program 7 times [2018-10-24 12:00:04,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:04,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:04,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:04,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:04,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:04,683 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:04,683 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:04,683 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 [2018-10-24 12:00:04,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:04,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:05,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:05,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-24 12:00:05,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 12:00:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 12:00:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:00:05,091 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 19 states. [2018-10-24 12:00:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:05,402 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-24 12:00:05,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 12:00:05,403 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2018-10-24 12:00:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:05,405 INFO L225 Difference]: With dead ends: 37 [2018-10-24 12:00:05,405 INFO L226 Difference]: Without dead ends: 33 [2018-10-24 12:00:05,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:00:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-24 12:00:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-24 12:00:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-24 12:00:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-24 12:00:05,410 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2018-10-24 12:00:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:05,411 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-24 12:00:05,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 12:00:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-24 12:00:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 12:00:05,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:05,412 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:05,413 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:05,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1210560559, now seen corresponding path program 8 times [2018-10-24 12:00:05,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:05,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:05,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:05,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,426 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:05,427 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:05,427 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 [2018-10-24 12:00:05,438 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:05,452 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:05,452 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:05,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:05,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:05,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-24 12:00:05,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 12:00:05,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 12:00:05,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:00:05,988 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 21 states. [2018-10-24 12:00:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:06,578 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-24 12:00:06,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 12:00:06,578 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2018-10-24 12:00:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:06,579 INFO L225 Difference]: With dead ends: 40 [2018-10-24 12:00:06,579 INFO L226 Difference]: Without dead ends: 36 [2018-10-24 12:00:06,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:00:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-24 12:00:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-24 12:00:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-24 12:00:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-24 12:00:06,585 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2018-10-24 12:00:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:06,586 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-24 12:00:06,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 12:00:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-24 12:00:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 12:00:06,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:06,587 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:06,588 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:06,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1616999828, now seen corresponding path program 9 times [2018-10-24 12:00:06,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:06,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:06,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:06,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:06,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:06,600 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:06,600 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:06,600 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 [2018-10-24 12:00:06,609 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:06,631 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-24 12:00:06,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:06,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:07,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:07,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-24 12:00:07,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 12:00:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 12:00:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:00:07,322 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 23 states. [2018-10-24 12:00:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:07,884 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-24 12:00:07,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 12:00:07,885 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-24 12:00:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:07,886 INFO L225 Difference]: With dead ends: 43 [2018-10-24 12:00:07,886 INFO L226 Difference]: Without dead ends: 39 [2018-10-24 12:00:07,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2018-10-24 12:00:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-24 12:00:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-24 12:00:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-24 12:00:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-24 12:00:07,892 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 35 [2018-10-24 12:00:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:07,892 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-24 12:00:07,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 12:00:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-24 12:00:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 12:00:07,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:07,894 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:07,894 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:07,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1958512113, now seen corresponding path program 10 times [2018-10-24 12:00:07,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:07,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:07,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:07,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:07,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:07,906 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:07,907 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:07,907 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) [2018-10-24 12:00:07,926 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:00:07,951 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:07,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:07,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:08,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:08,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-24 12:00:08,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 12:00:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 12:00:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2018-10-24 12:00:08,527 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 25 states. [2018-10-24 12:00:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:09,050 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-24 12:00:09,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 12:00:09,050 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 38 [2018-10-24 12:00:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:09,051 INFO L225 Difference]: With dead ends: 46 [2018-10-24 12:00:09,052 INFO L226 Difference]: Without dead ends: 42 [2018-10-24 12:00:09,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-10-24 12:00:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-24 12:00:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-24 12:00:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-24 12:00:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-24 12:00:09,057 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 38 [2018-10-24 12:00:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:09,057 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-24 12:00:09,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-24 12:00:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-24 12:00:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 12:00:09,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:09,058 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:09,059 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:09,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash 550838348, now seen corresponding path program 11 times [2018-10-24 12:00:09,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:09,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:09,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:09,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,071 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:09,071 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:09,072 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 [2018-10-24 12:00:09,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:00:09,109 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-24 12:00:09,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:09,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:09,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:09,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-24 12:00:09,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-24 12:00:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-24 12:00:09,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2018-10-24 12:00:09,648 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 27 states. [2018-10-24 12:00:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:10,588 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-24 12:00:10,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-24 12:00:10,588 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 41 [2018-10-24 12:00:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:10,589 INFO L225 Difference]: With dead ends: 49 [2018-10-24 12:00:10,589 INFO L226 Difference]: Without dead ends: 45 [2018-10-24 12:00:10,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2018-10-24 12:00:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-24 12:00:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-24 12:00:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-24 12:00:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-24 12:00:10,596 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 41 [2018-10-24 12:00:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:10,596 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-24 12:00:10,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-24 12:00:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-24 12:00:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 12:00:10,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:10,598 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:10,598 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:10,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash 602383377, now seen corresponding path program 12 times [2018-10-24 12:00:10,598 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:10,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:10,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:10,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:10,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:10,609 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:10,609 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:10,609 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 [2018-10-24 12:00:10,619 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:00:10,652 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-24 12:00:10,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:10,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:12,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:12,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-24 12:00:12,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-24 12:00:12,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-24 12:00:12,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2018-10-24 12:00:12,392 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 29 states. [2018-10-24 12:00:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:12,988 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-24 12:00:12,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 12:00:12,989 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-10-24 12:00:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:12,990 INFO L225 Difference]: With dead ends: 52 [2018-10-24 12:00:12,990 INFO L226 Difference]: Without dead ends: 48 [2018-10-24 12:00:12,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2018-10-24 12:00:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-24 12:00:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-24 12:00:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-24 12:00:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-24 12:00:12,996 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 44 [2018-10-24 12:00:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:12,996 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-24 12:00:12,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-24 12:00:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-24 12:00:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 12:00:12,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:12,997 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:12,997 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:12,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1417949652, now seen corresponding path program 13 times [2018-10-24 12:00:12,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:12,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:12,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:12,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:12,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:13,008 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:13,009 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:13,009 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 [2018-10-24 12:00:13,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:13,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:13,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:13,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-24 12:00:13,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-24 12:00:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-24 12:00:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2018-10-24 12:00:13,795 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 31 states. [2018-10-24 12:00:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:14,431 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-24 12:00:14,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-24 12:00:14,432 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 47 [2018-10-24 12:00:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:14,433 INFO L225 Difference]: With dead ends: 55 [2018-10-24 12:00:14,433 INFO L226 Difference]: Without dead ends: 51 [2018-10-24 12:00:14,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=986, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 12:00:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-24 12:00:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-24 12:00:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-24 12:00:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-24 12:00:14,441 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 47 [2018-10-24 12:00:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:14,442 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-24 12:00:14,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-24 12:00:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-24 12:00:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 12:00:14,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:14,443 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:14,443 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:14,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:14,444 INFO L82 PathProgramCache]: Analyzing trace with hash 512469553, now seen corresponding path program 14 times [2018-10-24 12:00:14,444 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:14,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:14,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:14,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:14,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:14,458 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:14,458 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:14,459 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-24 12:00:14,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:14,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:14,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:14,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:15,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:15,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-24 12:00:15,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-24 12:00:15,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-24 12:00:15,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 12:00:15,296 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 33 states. [2018-10-24 12:00:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:16,017 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-24 12:00:16,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 12:00:16,018 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 50 [2018-10-24 12:00:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:16,019 INFO L225 Difference]: With dead ends: 58 [2018-10-24 12:00:16,019 INFO L226 Difference]: Without dead ends: 54 [2018-10-24 12:00:16,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=1116, Unknown=0, NotChecked=0, Total=1190 [2018-10-24 12:00:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-24 12:00:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-24 12:00:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-24 12:00:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-24 12:00:16,025 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 50 [2018-10-24 12:00:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:16,026 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-24 12:00:16,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-24 12:00:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-24 12:00:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 12:00:16,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:16,027 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:16,027 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:16,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 18912268, now seen corresponding path program 15 times [2018-10-24 12:00:16,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:16,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:16,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:16,038 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:16,039 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:16,039 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 [2018-10-24 12:00:16,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:16,096 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-24 12:00:16,097 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:16,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:17,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:17,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-24 12:00:17,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-24 12:00:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-24 12:00:17,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-10-24 12:00:17,305 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 35 states. [2018-10-24 12:00:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:18,059 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-24 12:00:18,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-24 12:00:18,060 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 53 [2018-10-24 12:00:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:18,061 INFO L225 Difference]: With dead ends: 61 [2018-10-24 12:00:18,061 INFO L226 Difference]: Without dead ends: 57 [2018-10-24 12:00:18,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=1255, Unknown=0, NotChecked=0, Total=1332 [2018-10-24 12:00:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-24 12:00:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-24 12:00:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-24 12:00:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-24 12:00:18,069 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 53 [2018-10-24 12:00:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:18,069 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-24 12:00:18,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-24 12:00:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-24 12:00:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 12:00:18,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:18,071 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:18,071 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:18,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:18,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1873110959, now seen corresponding path program 16 times [2018-10-24 12:00:18,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:18,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:18,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:18,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:18,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:18,081 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:18,082 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:18,082 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 [2018-10-24 12:00:18,091 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:00:18,116 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:18,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:18,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:18,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:18,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-24 12:00:18,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-24 12:00:18,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-24 12:00:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2018-10-24 12:00:18,914 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 37 states. [2018-10-24 12:00:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:19,798 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-24 12:00:19,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-24 12:00:19,798 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 56 [2018-10-24 12:00:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:19,799 INFO L225 Difference]: With dead ends: 64 [2018-10-24 12:00:19,799 INFO L226 Difference]: Without dead ends: 60 [2018-10-24 12:00:19,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=1400, Unknown=0, NotChecked=0, Total=1482 [2018-10-24 12:00:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-24 12:00:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-24 12:00:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-24 12:00:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-24 12:00:19,805 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 56 [2018-10-24 12:00:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:19,805 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-24 12:00:19,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-24 12:00:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-24 12:00:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 12:00:19,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:19,806 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:19,807 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:19,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:19,807 INFO L82 PathProgramCache]: Analyzing trace with hash 13726188, now seen corresponding path program 17 times [2018-10-24 12:00:19,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:19,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:19,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:19,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:19,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:19,818 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:19,818 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:19,818 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 [2018-10-24 12:00:19,835 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:00:19,870 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-24 12:00:19,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:19,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:20,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:20,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-24 12:00:20,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-24 12:00:20,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-24 12:00:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2018-10-24 12:00:20,836 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 39 states. [2018-10-24 12:00:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:22,043 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-24 12:00:22,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-24 12:00:22,044 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 59 [2018-10-24 12:00:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:22,045 INFO L225 Difference]: With dead ends: 67 [2018-10-24 12:00:22,045 INFO L226 Difference]: Without dead ends: 63 [2018-10-24 12:00:22,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=1554, Unknown=0, NotChecked=0, Total=1640 [2018-10-24 12:00:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-24 12:00:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-24 12:00:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-24 12:00:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-24 12:00:22,057 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 59 [2018-10-24 12:00:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:22,058 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-24 12:00:22,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-24 12:00:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-24 12:00:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 12:00:22,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:22,059 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:22,059 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:22,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1752797583, now seen corresponding path program 18 times [2018-10-24 12:00:22,060 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:22,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:22,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:22,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:22,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:22,070 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:22,070 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:22,070 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 [2018-10-24 12:00:22,080 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:00:22,122 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-24 12:00:22,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:22,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:22,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:22,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-24 12:00:22,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-24 12:00:22,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-24 12:00:22,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2018-10-24 12:00:22,998 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 41 states. [2018-10-24 12:00:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:23,996 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-24 12:00:23,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-24 12:00:23,997 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 62 [2018-10-24 12:00:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:23,998 INFO L225 Difference]: With dead ends: 70 [2018-10-24 12:00:23,998 INFO L226 Difference]: Without dead ends: 66 [2018-10-24 12:00:23,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=1716, Unknown=0, NotChecked=0, Total=1806 [2018-10-24 12:00:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-24 12:00:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-24 12:00:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-24 12:00:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-24 12:00:24,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 62 [2018-10-24 12:00:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:24,005 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-24 12:00:24,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-24 12:00:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-24 12:00:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 12:00:24,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:24,006 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:24,006 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:24,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2028181556, now seen corresponding path program 19 times [2018-10-24 12:00:24,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:24,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:24,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:24,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:24,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:24,016 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:24,016 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:24,016 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 [2018-10-24 12:00:24,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:24,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:25,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:25,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-24 12:00:25,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-24 12:00:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-24 12:00:25,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2018-10-24 12:00:25,414 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 43 states. [2018-10-24 12:00:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:26,472 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-24 12:00:26,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-24 12:00:26,473 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 65 [2018-10-24 12:00:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:26,474 INFO L225 Difference]: With dead ends: 73 [2018-10-24 12:00:26,474 INFO L226 Difference]: Without dead ends: 69 [2018-10-24 12:00:26,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=94, Invalid=1886, Unknown=0, NotChecked=0, Total=1980 [2018-10-24 12:00:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-24 12:00:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-24 12:00:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-24 12:00:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-24 12:00:26,485 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 65 [2018-10-24 12:00:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:26,486 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-24 12:00:26,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-24 12:00:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-24 12:00:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-24 12:00:26,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:26,487 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:26,488 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:26,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:26,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1690381457, now seen corresponding path program 20 times [2018-10-24 12:00:26,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:26,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:26,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:26,503 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:26,503 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:26,503 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 [2018-10-24 12:00:26,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:26,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:26,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:26,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:27,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:27,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-24 12:00:27,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-24 12:00:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-24 12:00:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2018-10-24 12:00:27,828 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 45 states. [2018-10-24 12:00:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:28,987 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-24 12:00:28,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-24 12:00:28,990 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 68 [2018-10-24 12:00:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:28,991 INFO L225 Difference]: With dead ends: 76 [2018-10-24 12:00:28,991 INFO L226 Difference]: Without dead ends: 72 [2018-10-24 12:00:28,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=2064, Unknown=0, NotChecked=0, Total=2162 [2018-10-24 12:00:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-24 12:00:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-24 12:00:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-24 12:00:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-24 12:00:28,996 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 68 [2018-10-24 12:00:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:28,996 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-24 12:00:28,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-24 12:00:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-24 12:00:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 12:00:28,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:28,997 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:28,997 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:28,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:28,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1309636012, now seen corresponding path program 21 times [2018-10-24 12:00:28,997 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:28,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:28,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:28,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:28,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:29,006 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:29,006 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:29,006 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 [2018-10-24 12:00:29,022 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:29,110 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-24 12:00:29,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:29,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:30,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:30,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-24 12:00:30,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-24 12:00:30,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-24 12:00:30,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-10-24 12:00:30,661 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 47 states. [2018-10-24 12:00:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:32,124 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-24 12:00:32,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-24 12:00:32,124 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 71 [2018-10-24 12:00:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:32,125 INFO L225 Difference]: With dead ends: 79 [2018-10-24 12:00:32,125 INFO L226 Difference]: Without dead ends: 75 [2018-10-24 12:00:32,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=101, Invalid=2251, Unknown=0, NotChecked=0, Total=2352 [2018-10-24 12:00:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-24 12:00:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-24 12:00:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-24 12:00:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-24 12:00:32,131 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 71 [2018-10-24 12:00:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:32,131 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-24 12:00:32,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-24 12:00:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-24 12:00:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-24 12:00:32,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:32,132 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:32,132 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:32,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:32,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1530712753, now seen corresponding path program 22 times [2018-10-24 12:00:32,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:32,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:32,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:32,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:32,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:32,141 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:32,142 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:32,142 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 [2018-10-24 12:00:32,158 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:00:32,195 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:32,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:32,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:33,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:33,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-24 12:00:33,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-24 12:00:33,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-24 12:00:33,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2018-10-24 12:00:33,743 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 49 states. [2018-10-24 12:00:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:35,086 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-24 12:00:35,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-24 12:00:35,087 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 74 [2018-10-24 12:00:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:35,088 INFO L225 Difference]: With dead ends: 82 [2018-10-24 12:00:35,088 INFO L226 Difference]: Without dead ends: 78 [2018-10-24 12:00:35,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=2444, Unknown=0, NotChecked=0, Total=2550 [2018-10-24 12:00:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-24 12:00:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-24 12:00:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-24 12:00:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-24 12:00:35,093 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 74 [2018-10-24 12:00:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:35,093 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-24 12:00:35,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-24 12:00:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-24 12:00:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-24 12:00:35,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:35,094 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:35,094 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:35,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash -851928180, now seen corresponding path program 23 times [2018-10-24 12:00:35,095 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:35,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:35,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:35,095 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:35,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:35,103 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:35,103 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:35,103 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 [2018-10-24 12:00:35,120 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:00:35,167 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-24 12:00:35,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:35,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:36,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:36,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-24 12:00:36,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-24 12:00:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-24 12:00:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2018-10-24 12:00:36,492 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 51 states. [2018-10-24 12:00:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:38,135 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-24 12:00:38,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-24 12:00:38,136 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 77 [2018-10-24 12:00:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:38,137 INFO L225 Difference]: With dead ends: 85 [2018-10-24 12:00:38,137 INFO L226 Difference]: Without dead ends: 81 [2018-10-24 12:00:38,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=2646, Unknown=0, NotChecked=0, Total=2756 [2018-10-24 12:00:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-24 12:00:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-24 12:00:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-24 12:00:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-24 12:00:38,142 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 77 [2018-10-24 12:00:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:38,143 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-24 12:00:38,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-24 12:00:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-24 12:00:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-24 12:00:38,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:38,144 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:38,144 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:38,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash 816537809, now seen corresponding path program 24 times [2018-10-24 12:00:38,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:38,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:38,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:38,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:38,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:38,153 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:38,153 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:38,153 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) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:00:38,172 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:00:38,235 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-24 12:00:38,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:38,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:41,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:41,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-24 12:00:41,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-24 12:00:41,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-24 12:00:41,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2018-10-24 12:00:41,076 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 53 states. [2018-10-24 12:00:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:42,909 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-24 12:00:42,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-24 12:00:42,910 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 80 [2018-10-24 12:00:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:42,911 INFO L225 Difference]: With dead ends: 88 [2018-10-24 12:00:42,911 INFO L226 Difference]: Without dead ends: 84 [2018-10-24 12:00:42,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=114, Invalid=2856, Unknown=0, NotChecked=0, Total=2970 [2018-10-24 12:00:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-24 12:00:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-24 12:00:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-24 12:00:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-24 12:00:42,917 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 80 [2018-10-24 12:00:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:42,917 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-24 12:00:42,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-24 12:00:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-24 12:00:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-24 12:00:42,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:42,918 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:42,919 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:42,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:42,919 INFO L82 PathProgramCache]: Analyzing trace with hash 430299500, now seen corresponding path program 25 times [2018-10-24 12:00:42,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:42,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:42,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:42,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:42,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:42,927 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:42,927 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:42,927 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 [2018-10-24 12:00:42,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:42,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:44,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:44,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-24 12:00:44,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-24 12:00:44,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-24 12:00:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2018-10-24 12:00:44,455 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 55 states. [2018-10-24 12:00:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:46,211 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-24 12:00:46,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-24 12:00:46,211 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 83 [2018-10-24 12:00:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:46,212 INFO L225 Difference]: With dead ends: 91 [2018-10-24 12:00:46,212 INFO L226 Difference]: Without dead ends: 87 [2018-10-24 12:00:46,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=3074, Unknown=0, NotChecked=0, Total=3192 [2018-10-24 12:00:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-24 12:00:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-24 12:00:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-24 12:00:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-24 12:00:46,218 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 83 [2018-10-24 12:00:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:46,219 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-24 12:00:46,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-24 12:00:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-24 12:00:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 12:00:46,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:46,219 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:46,219 INFO L424 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:46,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash 222222065, now seen corresponding path program 26 times [2018-10-24 12:00:46,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:46,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:46,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:46,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:46,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:46,227 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:46,227 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:46,228 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 [2018-10-24 12:00:46,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:46,285 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:46,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:46,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:48,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:48,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-24 12:00:48,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-24 12:00:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-24 12:00:48,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2018-10-24 12:00:48,364 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 57 states. [2018-10-24 12:00:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:50,199 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-24 12:00:50,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-24 12:00:50,200 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 86 [2018-10-24 12:00:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:50,201 INFO L225 Difference]: With dead ends: 94 [2018-10-24 12:00:50,201 INFO L226 Difference]: Without dead ends: 90 [2018-10-24 12:00:50,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=3300, Unknown=0, NotChecked=0, Total=3422 [2018-10-24 12:00:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-24 12:00:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-24 12:00:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-24 12:00:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-24 12:00:50,207 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 86 [2018-10-24 12:00:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:50,207 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-24 12:00:50,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-24 12:00:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-24 12:00:50,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 12:00:50,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:50,208 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:50,208 INFO L424 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:50,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:50,208 INFO L82 PathProgramCache]: Analyzing trace with hash -974835892, now seen corresponding path program 27 times [2018-10-24 12:00:50,209 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:50,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:50,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:50,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:50,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:50,217 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:50,217 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:50,217 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 [2018-10-24 12:00:50,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:50,422 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-24 12:00:50,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:50,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:52,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:52,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-24 12:00:52,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-24 12:00:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-24 12:00:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-10-24 12:00:52,737 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 59 states. [2018-10-24 12:00:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:54,787 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-24 12:00:54,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-24 12:00:54,788 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 89 [2018-10-24 12:00:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:54,789 INFO L225 Difference]: With dead ends: 97 [2018-10-24 12:00:54,789 INFO L226 Difference]: Without dead ends: 93 [2018-10-24 12:00:54,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=125, Invalid=3535, Unknown=0, NotChecked=0, Total=3660 [2018-10-24 12:00:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-24 12:00:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-24 12:00:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-24 12:00:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-24 12:00:54,794 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 89 [2018-10-24 12:00:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:54,795 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-24 12:00:54,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-24 12:00:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-24 12:00:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 12:00:54,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:54,796 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:54,796 INFO L424 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:54,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1414974191, now seen corresponding path program 28 times [2018-10-24 12:00:54,797 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:54,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:54,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:54,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:54,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:54,805 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:54,805 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:54,805 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 [2018-10-24 12:00:54,819 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:00:54,873 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:54,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:54,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:56,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:56,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-24 12:00:56,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-24 12:00:56,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-24 12:00:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2018-10-24 12:00:56,860 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 61 states. [2018-10-24 12:00:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:59,199 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-24 12:00:59,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-24 12:00:59,199 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 92 [2018-10-24 12:00:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:59,200 INFO L225 Difference]: With dead ends: 100 [2018-10-24 12:00:59,200 INFO L226 Difference]: Without dead ends: 96 [2018-10-24 12:00:59,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=130, Invalid=3776, Unknown=0, NotChecked=0, Total=3906 [2018-10-24 12:00:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-24 12:00:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-24 12:00:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-24 12:00:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-24 12:00:59,204 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 92 [2018-10-24 12:00:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:59,204 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-24 12:00:59,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-24 12:00:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-24 12:00:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 12:00:59,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:59,205 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:59,205 INFO L424 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:59,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1039885012, now seen corresponding path program 29 times [2018-10-24 12:00:59,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:59,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:59,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:59,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:59,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:59,213 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:00:59,213 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:00:59,213 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 [2018-10-24 12:00:59,229 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:00:59,316 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-24 12:00:59,317 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:59,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:02,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:02,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-24 12:01:02,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-24 12:01:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-24 12:01:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2018-10-24 12:01:02,192 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 63 states. [2018-10-24 12:01:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:04,663 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-24 12:01:04,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-24 12:01:04,663 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 95 [2018-10-24 12:01:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:04,664 INFO L225 Difference]: With dead ends: 103 [2018-10-24 12:01:04,664 INFO L226 Difference]: Without dead ends: 99 [2018-10-24 12:01:04,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=134, Invalid=4026, Unknown=0, NotChecked=0, Total=4160 [2018-10-24 12:01:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-24 12:01:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-24 12:01:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-24 12:01:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-24 12:01:04,671 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 95 [2018-10-24 12:01:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:04,671 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-24 12:01:04,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-24 12:01:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-24 12:01:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 12:01:04,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:04,672 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:04,672 INFO L424 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:04,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:04,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2031909681, now seen corresponding path program 30 times [2018-10-24 12:01:04,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:04,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:04,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:04,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:04,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:04,681 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:04,682 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:04,682 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 [2018-10-24 12:01:04,704 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:01:04,818 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-24 12:01:04,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:04,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:06,942 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:06,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-24 12:01:06,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-24 12:01:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-24 12:01:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2018-10-24 12:01:06,944 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 65 states. [2018-10-24 12:01:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:09,593 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-24 12:01:09,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-24 12:01:09,593 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 98 [2018-10-24 12:01:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:09,595 INFO L225 Difference]: With dead ends: 106 [2018-10-24 12:01:09,595 INFO L226 Difference]: Without dead ends: 102 [2018-10-24 12:01:09,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=138, Invalid=4284, Unknown=0, NotChecked=0, Total=4422 [2018-10-24 12:01:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-24 12:01:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-24 12:01:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-24 12:01:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-24 12:01:09,600 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 98 [2018-10-24 12:01:09,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:09,601 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-24 12:01:09,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-24 12:01:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-24 12:01:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 12:01:09,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:09,602 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:09,602 INFO L424 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:09,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:09,602 INFO L82 PathProgramCache]: Analyzing trace with hash 999432972, now seen corresponding path program 31 times [2018-10-24 12:01:09,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:09,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:09,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:09,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:09,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:09,611 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:09,611 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:09,611 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 [2018-10-24 12:01:09,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:01:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:01:09,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:11,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:11,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-24 12:01:11,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-24 12:01:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-24 12:01:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2018-10-24 12:01:11,906 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 67 states. [2018-10-24 12:01:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:14,662 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-24 12:01:14,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-24 12:01:14,663 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 101 [2018-10-24 12:01:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:14,664 INFO L225 Difference]: With dead ends: 109 [2018-10-24 12:01:14,664 INFO L226 Difference]: Without dead ends: 105 [2018-10-24 12:01:14,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=142, Invalid=4550, Unknown=0, NotChecked=0, Total=4692 [2018-10-24 12:01:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-24 12:01:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-24 12:01:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-24 12:01:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-24 12:01:14,671 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 101 [2018-10-24 12:01:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-24 12:01:14,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-24 12:01:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-24 12:01:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 12:01:14,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:14,672 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:14,673 INFO L424 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:14,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1253398191, now seen corresponding path program 32 times [2018-10-24 12:01:14,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:14,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:14,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:01:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:14,681 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:14,681 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:14,681 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 [2018-10-24 12:01:14,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:01:14,754 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:01:14,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:14,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:17,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:17,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-24 12:01:17,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-24 12:01:17,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-24 12:01:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2018-10-24 12:01:17,057 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 69 states. [2018-10-24 12:01:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:20,010 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-24 12:01:20,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-24 12:01:20,011 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 104 [2018-10-24 12:01:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:20,012 INFO L225 Difference]: With dead ends: 112 [2018-10-24 12:01:20,012 INFO L226 Difference]: Without dead ends: 108 [2018-10-24 12:01:20,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=146, Invalid=4824, Unknown=0, NotChecked=0, Total=4970 [2018-10-24 12:01:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-24 12:01:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-24 12:01:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-24 12:01:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-24 12:01:20,019 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 104 [2018-10-24 12:01:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:20,019 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-24 12:01:20,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-24 12:01:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-24 12:01:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 12:01:20,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:20,020 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:20,020 INFO L424 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:20,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:20,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2107359468, now seen corresponding path program 33 times [2018-10-24 12:01:20,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:20,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:20,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:20,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:20,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:20,028 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:20,029 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:20,029 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 [2018-10-24 12:01:20,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:01:20,447 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-24 12:01:20,448 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:20,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:23,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:23,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-24 12:01:23,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-24 12:01:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-24 12:01:23,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-10-24 12:01:23,217 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 71 states. [2018-10-24 12:01:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:26,265 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-24 12:01:26,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-24 12:01:26,266 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 107 [2018-10-24 12:01:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:26,267 INFO L225 Difference]: With dead ends: 115 [2018-10-24 12:01:26,267 INFO L226 Difference]: Without dead ends: 111 [2018-10-24 12:01:26,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=149, Invalid=5107, Unknown=0, NotChecked=0, Total=5256 [2018-10-24 12:01:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-24 12:01:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-24 12:01:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-24 12:01:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-24 12:01:26,273 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 107 [2018-10-24 12:01:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:26,273 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-24 12:01:26,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-24 12:01:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-24 12:01:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 12:01:26,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:26,274 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:26,275 INFO L424 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:26,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825615, now seen corresponding path program 34 times [2018-10-24 12:01:26,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:26,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:26,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:26,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:26,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:26,282 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:26,283 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:26,283 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 [2018-10-24 12:01:26,297 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:01:26,353 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:01:26,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:26,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:29,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:29,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-24 12:01:29,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-24 12:01:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-24 12:01:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2018-10-24 12:01:29,328 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 73 states. [2018-10-24 12:01:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:32,383 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-24 12:01:32,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-24 12:01:32,384 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 110 [2018-10-24 12:01:32,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:32,385 INFO L225 Difference]: With dead ends: 118 [2018-10-24 12:01:32,385 INFO L226 Difference]: Without dead ends: 114 [2018-10-24 12:01:32,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=5396, Unknown=0, NotChecked=0, Total=5550 [2018-10-24 12:01:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-24 12:01:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-24 12:01:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-24 12:01:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-24 12:01:32,391 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 110 [2018-10-24 12:01:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:32,392 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-24 12:01:32,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-24 12:01:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-24 12:01:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 12:01:32,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:32,393 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:32,393 INFO L424 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:32,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash -793807156, now seen corresponding path program 35 times [2018-10-24 12:01:32,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:32,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:32,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:32,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:32,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:32,402 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:32,402 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:32,402 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 [2018-10-24 12:01:32,409 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:01:32,509 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-24 12:01:32,509 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:32,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:35,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:35,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-24 12:01:35,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-24 12:01:35,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-24 12:01:35,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2018-10-24 12:01:35,438 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 75 states. [2018-10-24 12:01:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:38,825 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-24 12:01:38,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-24 12:01:38,826 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 113 [2018-10-24 12:01:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:38,827 INFO L225 Difference]: With dead ends: 121 [2018-10-24 12:01:38,827 INFO L226 Difference]: Without dead ends: 117 [2018-10-24 12:01:38,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=158, Invalid=5694, Unknown=0, NotChecked=0, Total=5852 [2018-10-24 12:01:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-24 12:01:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-24 12:01:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-24 12:01:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-24 12:01:38,833 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 113 [2018-10-24 12:01:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:38,833 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-24 12:01:38,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-24 12:01:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-24 12:01:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 12:01:38,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:38,834 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:38,834 INFO L424 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:38,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1428143505, now seen corresponding path program 36 times [2018-10-24 12:01:38,835 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:38,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:38,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:38,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:38,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:38,843 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:38,843 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:38,843 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 [2018-10-24 12:01:38,857 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:01:38,988 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-24 12:01:38,988 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:38,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:41,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:41,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-24 12:01:41,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-24 12:01:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-24 12:01:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2018-10-24 12:01:41,814 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 77 states. [2018-10-24 12:01:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:45,406 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-24 12:01:45,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-24 12:01:45,406 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 116 [2018-10-24 12:01:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:45,407 INFO L225 Difference]: With dead ends: 124 [2018-10-24 12:01:45,408 INFO L226 Difference]: Without dead ends: 120 [2018-10-24 12:01:45,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=162, Invalid=6000, Unknown=0, NotChecked=0, Total=6162 [2018-10-24 12:01:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-24 12:01:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-24 12:01:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-24 12:01:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-24 12:01:45,412 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 116 [2018-10-24 12:01:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:45,412 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-24 12:01:45,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-24 12:01:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-24 12:01:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 12:01:45,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:45,413 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:45,413 INFO L424 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:45,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1524319404, now seen corresponding path program 37 times [2018-10-24 12:01:45,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:45,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:45,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:45,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:01:45,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:45,422 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:45,422 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:45,422 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 [2018-10-24 12:01:45,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:01:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:01:45,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:48,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:48,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-24 12:01:48,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-24 12:01:48,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-24 12:01:48,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2018-10-24 12:01:48,488 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 79 states. [2018-10-24 12:01:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:01:52,283 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-24 12:01:52,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-24 12:01:52,284 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 119 [2018-10-24 12:01:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:01:52,285 INFO L225 Difference]: With dead ends: 127 [2018-10-24 12:01:52,285 INFO L226 Difference]: Without dead ends: 123 [2018-10-24 12:01:52,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=166, Invalid=6314, Unknown=0, NotChecked=0, Total=6480 [2018-10-24 12:01:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-24 12:01:52,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-24 12:01:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-24 12:01:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-24 12:01:52,290 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 119 [2018-10-24 12:01:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:01:52,291 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-24 12:01:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-24 12:01:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-24 12:01:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 12:01:52,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:01:52,291 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:01:52,292 INFO L424 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:01:52,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:01:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1957340081, now seen corresponding path program 38 times [2018-10-24 12:01:52,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:01:52,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:01:52,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:52,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:01:52,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:01:52,302 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:01:52,302 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:01:52,302 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 [2018-10-24 12:01:52,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:01:52,386 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:01:52,386 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:01:52,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:01:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:01:56,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:01:56,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-24 12:01:56,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-24 12:01:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-24 12:01:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2018-10-24 12:01:56,012 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 81 states. [2018-10-24 12:02:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:00,006 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-24 12:02:00,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-24 12:02:00,007 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 122 [2018-10-24 12:02:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:00,008 INFO L225 Difference]: With dead ends: 130 [2018-10-24 12:02:00,008 INFO L226 Difference]: Without dead ends: 126 [2018-10-24 12:02:00,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=170, Invalid=6636, Unknown=0, NotChecked=0, Total=6806 [2018-10-24 12:02:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-24 12:02:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-24 12:02:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-24 12:02:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-24 12:02:00,013 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 122 [2018-10-24 12:02:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:00,013 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-24 12:02:00,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-24 12:02:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-24 12:02:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 12:02:00,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:00,014 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:00,014 INFO L424 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:00,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -5428596, now seen corresponding path program 39 times [2018-10-24 12:02:00,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:00,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:00,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:00,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:00,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:00,023 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:00,023 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:00,023 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) [2018-10-24 12:02:00,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:02:01,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-24 12:02:01,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:01,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:04,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:04,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-24 12:02:04,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-24 12:02:04,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-24 12:02:04,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-10-24 12:02:04,734 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 83 states. [2018-10-24 12:02:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:08,751 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-24 12:02:08,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-24 12:02:08,752 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 125 [2018-10-24 12:02:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:08,753 INFO L225 Difference]: With dead ends: 133 [2018-10-24 12:02:08,754 INFO L226 Difference]: Without dead ends: 129 [2018-10-24 12:02:08,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=173, Invalid=6967, Unknown=0, NotChecked=0, Total=7140 [2018-10-24 12:02:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-24 12:02:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-24 12:02:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-24 12:02:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-24 12:02:08,759 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 125 [2018-10-24 12:02:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:08,760 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-24 12:02:08,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-24 12:02:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-24 12:02:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 12:02:08,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:08,761 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:08,761 INFO L424 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:08,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1162317359, now seen corresponding path program 40 times [2018-10-24 12:02:08,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:08,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:08,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:08,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:08,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:08,770 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:08,771 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:08,771 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) [2018-10-24 12:02:08,785 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:02:08,888 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:02:08,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:08,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:12,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:12,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-24 12:02:12,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-24 12:02:12,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-24 12:02:12,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2018-10-24 12:02:12,850 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 85 states. [2018-10-24 12:02:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:16,981 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-24 12:02:16,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-24 12:02:16,982 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 128 [2018-10-24 12:02:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:16,983 INFO L225 Difference]: With dead ends: 136 [2018-10-24 12:02:16,984 INFO L226 Difference]: Without dead ends: 132 [2018-10-24 12:02:16,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=178, Invalid=7304, Unknown=0, NotChecked=0, Total=7482 [2018-10-24 12:02:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-24 12:02:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-24 12:02:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-24 12:02:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-24 12:02:16,990 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 128 [2018-10-24 12:02:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:16,990 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-24 12:02:16,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-24 12:02:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-24 12:02:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 12:02:16,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:16,991 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:16,992 INFO L424 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:16,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:16,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1077094508, now seen corresponding path program 41 times [2018-10-24 12:02:16,992 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:16,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:16,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:16,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:16,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:17,000 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:17,001 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:17,001 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-24 12:02:17,015 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:02:17,128 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-24 12:02:17,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:17,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:20,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:20,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-24 12:02:20,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-24 12:02:20,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-24 12:02:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2018-10-24 12:02:20,781 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 87 states. [2018-10-24 12:02:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:25,126 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-24 12:02:25,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-24 12:02:25,127 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 131 [2018-10-24 12:02:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:25,128 INFO L225 Difference]: With dead ends: 139 [2018-10-24 12:02:25,128 INFO L226 Difference]: Without dead ends: 135 [2018-10-24 12:02:25,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=182, Invalid=7650, Unknown=0, NotChecked=0, Total=7832 [2018-10-24 12:02:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-24 12:02:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-24 12:02:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-24 12:02:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-24 12:02:25,134 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 131 [2018-10-24 12:02:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:25,134 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-24 12:02:25,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-24 12:02:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-24 12:02:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 12:02:25,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:25,135 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:25,136 INFO L424 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:25,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1669015537, now seen corresponding path program 42 times [2018-10-24 12:02:25,136 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:25,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:25,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:25,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:25,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:25,145 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:25,145 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:25,145 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 [2018-10-24 12:02:25,162 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:02:25,407 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-24 12:02:25,407 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:25,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:29,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:29,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-10-24 12:02:29,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-24 12:02:29,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-24 12:02:29,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2018-10-24 12:02:29,271 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 89 states. [2018-10-24 12:02:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:33,798 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-24 12:02:33,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-24 12:02:33,799 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 134 [2018-10-24 12:02:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:33,800 INFO L225 Difference]: With dead ends: 142 [2018-10-24 12:02:33,800 INFO L226 Difference]: Without dead ends: 138 [2018-10-24 12:02:33,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=8004, Unknown=0, NotChecked=0, Total=8190 [2018-10-24 12:02:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-24 12:02:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-24 12:02:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-24 12:02:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-24 12:02:33,806 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 134 [2018-10-24 12:02:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:33,806 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-24 12:02:33,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-24 12:02:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-24 12:02:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 12:02:33,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:33,807 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:33,807 INFO L424 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:33,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 452673100, now seen corresponding path program 43 times [2018-10-24 12:02:33,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:33,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:33,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:33,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:33,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:33,817 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:33,817 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:33,817 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 [2018-10-24 12:02:33,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:02:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:02:33,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:37,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:37,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-24 12:02:37,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-24 12:02:37,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-24 12:02:37,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2018-10-24 12:02:37,842 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 91 states. [2018-10-24 12:02:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:42,707 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-24 12:02:42,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-24 12:02:42,707 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 137 [2018-10-24 12:02:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:42,708 INFO L225 Difference]: With dead ends: 145 [2018-10-24 12:02:42,709 INFO L226 Difference]: Without dead ends: 141 [2018-10-24 12:02:42,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=190, Invalid=8366, Unknown=0, NotChecked=0, Total=8556 [2018-10-24 12:02:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-24 12:02:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-24 12:02:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-24 12:02:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-24 12:02:42,715 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 137 [2018-10-24 12:02:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:42,715 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-24 12:02:42,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-24 12:02:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-24 12:02:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 12:02:42,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:42,716 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:42,716 INFO L424 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:42,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:42,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1034208785, now seen corresponding path program 44 times [2018-10-24 12:02:42,717 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:42,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:42,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:42,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:02:42,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:42,725 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:42,726 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:42,726 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-24 12:02:42,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:02:42,831 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:02:42,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:42,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:02:46,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:02:46,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-24 12:02:46,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-24 12:02:46,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-24 12:02:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2018-10-24 12:02:46,803 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 93 states. [2018-10-24 12:02:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:02:51,559 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-24 12:02:51,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-24 12:02:51,560 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 140 [2018-10-24 12:02:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:02:51,561 INFO L225 Difference]: With dead ends: 148 [2018-10-24 12:02:51,561 INFO L226 Difference]: Without dead ends: 144 [2018-10-24 12:02:51,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=194, Invalid=8736, Unknown=0, NotChecked=0, Total=8930 [2018-10-24 12:02:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-24 12:02:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-24 12:02:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-24 12:02:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-24 12:02:51,566 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 140 [2018-10-24 12:02:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:02:51,566 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-24 12:02:51,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-24 12:02:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-24 12:02:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 12:02:51,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:02:51,567 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:02:51,567 INFO L424 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:02:51,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:02:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash -334271444, now seen corresponding path program 45 times [2018-10-24 12:02:51,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:02:51,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:02:51,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:51,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:02:51,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:02:51,576 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:02:51,576 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:02:51,576 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 [2018-10-24 12:02:51,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:02:53,378 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-24 12:02:53,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:02:53,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:02:54,669 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 12:03:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:00,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:00,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-10-24 12:03:00,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-24 12:03:00,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-24 12:03:00,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-10-24 12:03:00,289 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 95 states. [2018-10-24 12:03:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:05,583 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-24 12:03:05,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-24 12:03:05,584 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 143 [2018-10-24 12:03:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:05,585 INFO L225 Difference]: With dead ends: 151 [2018-10-24 12:03:05,585 INFO L226 Difference]: Without dead ends: 147 [2018-10-24 12:03:05,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=197, Invalid=9115, Unknown=0, NotChecked=0, Total=9312 [2018-10-24 12:03:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-24 12:03:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-24 12:03:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-24 12:03:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-24 12:03:05,592 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 143 [2018-10-24 12:03:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:05,592 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-24 12:03:05,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-24 12:03:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-24 12:03:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 12:03:05,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:05,593 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:05,593 INFO L424 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:05,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:05,594 INFO L82 PathProgramCache]: Analyzing trace with hash -899199951, now seen corresponding path program 46 times [2018-10-24 12:03:05,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:05,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:05,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:05,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:03:05,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:05,602 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:05,602 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:05,603 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) [2018-10-24 12:03:05,616 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:03:05,715 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:03:05,715 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:03:05,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:03:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:10,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:10,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-10-24 12:03:10,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-24 12:03:10,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-24 12:03:10,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2018-10-24 12:03:10,102 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 97 states. [2018-10-24 12:03:15,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:15,538 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-24 12:03:15,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-24 12:03:15,539 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 146 [2018-10-24 12:03:15,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:15,540 INFO L225 Difference]: With dead ends: 154 [2018-10-24 12:03:15,540 INFO L226 Difference]: Without dead ends: 150 [2018-10-24 12:03:15,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=202, Invalid=9500, Unknown=0, NotChecked=0, Total=9702 [2018-10-24 12:03:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-24 12:03:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-24 12:03:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-24 12:03:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-24 12:03:15,546 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 146 [2018-10-24 12:03:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:15,547 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-24 12:03:15,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-24 12:03:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-24 12:03:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 12:03:15,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:15,548 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:15,548 INFO L424 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:15,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:15,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1292481036, now seen corresponding path program 47 times [2018-10-24 12:03:15,548 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:15,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:15,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:15,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:03:15,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:15,556 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:15,557 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:15,557 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 [2018-10-24 12:03:15,573 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 12:03:15,773 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-24 12:03:15,774 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:03:15,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:03:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:20,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:20,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-10-24 12:03:20,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-24 12:03:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-24 12:03:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2018-10-24 12:03:20,656 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 99 states. [2018-10-24 12:03:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:26,010 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-24 12:03:26,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-24 12:03:26,010 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 149 [2018-10-24 12:03:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:26,012 INFO L225 Difference]: With dead ends: 157 [2018-10-24 12:03:26,012 INFO L226 Difference]: Without dead ends: 153 [2018-10-24 12:03:26,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=206, Invalid=9894, Unknown=0, NotChecked=0, Total=10100 [2018-10-24 12:03:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-24 12:03:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-24 12:03:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-24 12:03:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-24 12:03:26,017 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 149 [2018-10-24 12:03:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:26,017 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-24 12:03:26,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-24 12:03:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-24 12:03:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 12:03:26,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:26,018 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:26,018 INFO L424 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:26,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1567930961, now seen corresponding path program 48 times [2018-10-24 12:03:26,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:26,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:26,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:26,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:03:26,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:26,027 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:26,027 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:26,027 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 [2018-10-24 12:03:26,039 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 12:03:26,252 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-24 12:03:26,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:03:26,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:03:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:30,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:30,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-10-24 12:03:30,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-24 12:03:30,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-24 12:03:30,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2018-10-24 12:03:30,918 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 101 states. [2018-10-24 12:03:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:36,534 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-24 12:03:36,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-24 12:03:36,534 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 152 [2018-10-24 12:03:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:36,535 INFO L225 Difference]: With dead ends: 160 [2018-10-24 12:03:36,535 INFO L226 Difference]: Without dead ends: 156 [2018-10-24 12:03:36,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=210, Invalid=10296, Unknown=0, NotChecked=0, Total=10506 [2018-10-24 12:03:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-24 12:03:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-24 12:03:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-24 12:03:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-24 12:03:36,540 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 152 [2018-10-24 12:03:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:36,540 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-24 12:03:36,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-24 12:03:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-24 12:03:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 12:03:36,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:36,541 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:36,541 INFO L424 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:36,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash -185856020, now seen corresponding path program 49 times [2018-10-24 12:03:36,542 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:36,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:36,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:36,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:03:36,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:36,551 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:36,551 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:36,551 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 [2018-10-24 12:03:36,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:03:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:03:36,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:03:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:41,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:41,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-10-24 12:03:41,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-24 12:03:41,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-24 12:03:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2018-10-24 12:03:41,487 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 103 states. [2018-10-24 12:03:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:47,553 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-24 12:03:47,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-24 12:03:47,554 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 155 [2018-10-24 12:03:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:47,556 INFO L225 Difference]: With dead ends: 163 [2018-10-24 12:03:47,556 INFO L226 Difference]: Without dead ends: 159 [2018-10-24 12:03:47,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=214, Invalid=10706, Unknown=0, NotChecked=0, Total=10920 [2018-10-24 12:03:47,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-24 12:03:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-24 12:03:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-24 12:03:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-24 12:03:47,560 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 155 [2018-10-24 12:03:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:47,560 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-24 12:03:47,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-24 12:03:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-24 12:03:47,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 12:03:47,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:47,561 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:47,561 INFO L424 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:47,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1023348849, now seen corresponding path program 50 times [2018-10-24 12:03:47,562 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:47,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:47,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:47,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:03:47,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:47,570 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:47,570 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:47,571 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 [2018-10-24 12:03:47,591 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:03:47,731 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:03:47,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:03:47,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:03:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:03:52,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:03:52,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-10-24 12:03:52,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-24 12:03:52,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-24 12:03:52,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2018-10-24 12:03:52,665 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 105 states. [2018-10-24 12:03:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:03:58,522 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-24 12:03:58,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-24 12:03:58,522 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 158 [2018-10-24 12:03:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:03:58,524 INFO L225 Difference]: With dead ends: 166 [2018-10-24 12:03:58,524 INFO L226 Difference]: Without dead ends: 162 [2018-10-24 12:03:58,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=218, Invalid=11124, Unknown=0, NotChecked=0, Total=11342 [2018-10-24 12:03:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-24 12:03:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-24 12:03:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-24 12:03:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-24 12:03:58,529 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 158 [2018-10-24 12:03:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:03:58,529 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-24 12:03:58,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-24 12:03:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-24 12:03:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 12:03:58,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:03:58,530 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:03:58,530 INFO L424 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:03:58,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:03:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1740077620, now seen corresponding path program 51 times [2018-10-24 12:03:58,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:03:58,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:03:58,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:58,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:03:58,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:03:58,538 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-24 12:03:58,539 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-24 12:03:58,539 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 [2018-10-24 12:03:58,546 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:04:01,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-24 12:04:01,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:04:01,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 12:04:06,392 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 12:04:06,592 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-24 12:04:06,593 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 12:04:06,598 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 12:04:06,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:04:06 BoogieIcfgContainer [2018-10-24 12:04:06,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:04:06,599 INFO L168 Benchmark]: Toolchain (without parser) took 247423.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.0 MB). Peak memory consumption was 557.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:06,599 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-24 12:04:06,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.61 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. [2018-10-24 12:04:06,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.93 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. [2018-10-24 12:04:06,601 INFO L168 Benchmark]: Boogie Preprocessor took 19.50 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. [2018-10-24 12:04:06,601 INFO L168 Benchmark]: RCFGBuilder took 322.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:06,602 INFO L168 Benchmark]: TraceAbstraction took 246783.90 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -40.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 600.3 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:06,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 252.61 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 37.93 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 19.50 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 322.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246783.90 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -40.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 600.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 162 with TraceHistMax 52,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 103 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. TIMEOUT Result, 246.7s OverallTime, 53 OverallIterations, 52 TraceHistogramMax, 119.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1598 SDtfs, 151 SDslu, 99157 SDs, 0 SdLazy, 192777 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4284 GetRequests, 1483 SyntacticMatches, 0 SemanticMatches, 2801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 111.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=52, 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: 0.2s AutomataMinimizationTime, 52 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 110.1s InterpolantComputationTime, 4240 NumberOfCodeBlocks, 4240 NumberOfCodeBlocksAsserted, 685 NumberOfCheckSat, 4188 ConstructedInterpolants, 0 QuantifiedInterpolants, 3506588 SizeOfPredicates, 252 NumberOfNonLiveVariables, 8670 ConjunctsInSsa, 5669 ConjunctsInUnsatCore, 52 InterpolantComputations, 2 PerfectInterpolantSequences, 0/65025 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown