java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 10:58:01,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:58:01,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:58:01,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:58:01,240 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:58:01,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:58:01,244 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:58:01,246 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:58:01,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:58:01,251 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:58:01,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:58:01,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:58:01,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:58:01,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:58:01,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:58:01,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:58:01,261 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:58:01,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:58:01,269 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:58:01,275 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:58:01,276 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:58:01,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:58:01,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 10:58:01,281 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 10:58:01,281 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 10:58:01,282 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 10:58:01,283 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 10:58:01,283 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 10:58:01,284 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 10:58:01,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 10:58:01,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 10:58:01,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 10:58:01,286 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 10:58:01,287 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 10:58:01,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 10:58:01,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 10:58:01,289 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 10:58:01,313 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:58:01,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:58:01,315 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:58:01,315 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:58:01,316 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:58:01,316 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:58:01,316 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:58:01,316 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:58:01,316 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:58:01,317 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:58:01,317 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:58:01,318 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:58:01,318 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:58:01,318 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:58:01,318 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:58:01,319 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:58:01,319 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:58:01,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:58:01,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:58:01,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:58:01,320 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:58:01,320 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:58:01,320 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:58:01,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:58:01,322 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:58:01,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:58:01,323 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:58:01,323 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:58:01,323 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:58:01,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:58:01,324 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:58:01,324 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:58:01,324 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:58:01,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:58:01,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:58:01,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:58:01,419 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:58:01,419 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:58:01,424 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-07-24 10:58:01,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2bd4dc2/03b023c44b1e42bf8bd07b8519492593/FLAG549fece20 [2018-07-24 10:58:01,905 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:58:01,906 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-07-24 10:58:01,911 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2bd4dc2/03b023c44b1e42bf8bd07b8519492593/FLAG549fece20 [2018-07-24 10:58:01,926 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2bd4dc2/03b023c44b1e42bf8bd07b8519492593 [2018-07-24 10:58:01,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:58:01,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:58:01,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:58:01,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:58:01,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:58:01,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:58:01" (1/1) ... [2018-07-24 10:58:01,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4b242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:01, skipping insertion in model container [2018-07-24 10:58:01,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:58:01" (1/1) ... [2018-07-24 10:58:02,138 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:58:02,194 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:58:02,212 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:58:02,221 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:58:02,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02 WrapperNode [2018-07-24 10:58:02,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:58:02,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:58:02,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:58:02,238 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:58:02,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:58:02,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:58:02,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:58:02,263 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:58:02,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... [2018-07-24 10:58:02,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:58:02,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:58:02,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:58:02,286 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:58:02,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:58:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:58:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:58:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:58:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:58:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:58:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:58:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:58:02,797 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:58:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:58:02 BoogieIcfgContainer [2018-07-24 10:58:02,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:58:02,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:58:02,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:58:02,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:58:02,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:58:01" (1/3) ... [2018-07-24 10:58:02,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3abca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:58:02, skipping insertion in model container [2018-07-24 10:58:02,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:58:02" (2/3) ... [2018-07-24 10:58:02,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3abca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:58:02, skipping insertion in model container [2018-07-24 10:58:02,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:58:02" (3/3) ... [2018-07-24 10:58:02,806 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call_true-termination.i [2018-07-24 10:58:02,816 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:58:02,825 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:58:02,871 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:58:02,872 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:58:02,873 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:58:02,873 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:58:02,873 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:58:02,873 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:58:02,873 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:58:02,873 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:58:02,873 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:58:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-07-24 10:58:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-24 10:58:02,900 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:02,901 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:02,901 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash -702630595, now seen corresponding path program 1 times [2018-07-24 10:58:02,911 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:02,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:02,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:02,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:02,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:03,044 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:58:03,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 10:58:03,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:58:03,051 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-24 10:58:03,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-24 10:58:03,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:58:03,071 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-07-24 10:58:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:03,103 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-07-24 10:58:03,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 10:58:03,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-07-24 10:58:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:03,115 INFO L225 Difference]: With dead ends: 43 [2018-07-24 10:58:03,115 INFO L226 Difference]: Without dead ends: 18 [2018-07-24 10:58:03,119 INFO L573 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 [2018-07-24 10:58:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-24 10:58:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-24 10:58:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-24 10:58:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-24 10:58:03,163 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2018-07-24 10:58:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:03,163 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-24 10:58:03,163 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-24 10:58:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-24 10:58:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-24 10:58:03,164 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:03,165 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:03,165 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:03,165 INFO L82 PathProgramCache]: Analyzing trace with hash -972126638, now seen corresponding path program 1 times [2018-07-24 10:58:03,166 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:03,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:03,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:03,312 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:58:03,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 10:58:03,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:58:03,315 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 10:58:03,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 10:58:03,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 10:58:03,316 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2018-07-24 10:58:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:03,445 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-24 10:58:03,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 10:58:03,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-07-24 10:58:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:03,448 INFO L225 Difference]: With dead ends: 29 [2018-07-24 10:58:03,448 INFO L226 Difference]: Without dead ends: 24 [2018-07-24 10:58:03,450 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:58:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-24 10:58:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-07-24 10:58:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-24 10:58:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-07-24 10:58:03,458 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-07-24 10:58:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:03,460 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-07-24 10:58:03,460 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 10:58:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-07-24 10:58:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-24 10:58:03,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:03,461 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:03,463 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:03,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1998515670, now seen corresponding path program 1 times [2018-07-24 10:58:03,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:03,540 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:58:03,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 10:58:03,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:58:03,541 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 10:58:03,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 10:58:03,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 10:58:03,542 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2018-07-24 10:58:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:03,618 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-07-24 10:58:03,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 10:58:03,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-07-24 10:58:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:03,622 INFO L225 Difference]: With dead ends: 34 [2018-07-24 10:58:03,623 INFO L226 Difference]: Without dead ends: 23 [2018-07-24 10:58:03,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:58:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-24 10:58:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-07-24 10:58:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-24 10:58:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-07-24 10:58:03,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2018-07-24 10:58:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:03,630 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-07-24 10:58:03,630 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 10:58:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-07-24 10:58:03,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:58:03,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:03,631 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:03,631 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:03,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1293803971, now seen corresponding path program 1 times [2018-07-24 10:58:03,632 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:03,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:03,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:03,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:03,749 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:03,750 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:03,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:03,764 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:03,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:03,936 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:04,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:04,277 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:04,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:04,294 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:04,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:04,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:04,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:04,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 10 [2018-07-24 10:58:04,374 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:04,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:58:04,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:58:04,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-24 10:58:04,376 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2018-07-24 10:58:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:04,449 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-07-24 10:58:04,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:58:04,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-07-24 10:58:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:04,451 INFO L225 Difference]: With dead ends: 39 [2018-07-24 10:58:04,451 INFO L226 Difference]: Without dead ends: 26 [2018-07-24 10:58:04,452 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-24 10:58:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-24 10:58:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-07-24 10:58:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-24 10:58:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-24 10:58:04,458 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-07-24 10:58:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:04,458 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-24 10:58:04,458 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:58:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-24 10:58:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 10:58:04,460 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:04,460 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:04,460 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:04,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1379909750, now seen corresponding path program 2 times [2018-07-24 10:58:04,461 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:04,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:04,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:04,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:04,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:58:04,601 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:04,601 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:04,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:04,616 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:04,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:04,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:04,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 10:58:04,891 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 10:58:04,967 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:04,967 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:04,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:04,983 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:05,007 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:05,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:05,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 10:58:05,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 10:58:05,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:05,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 10:58:05,041 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:05,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 10:58:05,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 10:58:05,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-24 10:58:05,043 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-07-24 10:58:05,450 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 10:58:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:05,774 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-07-24 10:58:05,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 10:58:05,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-24 10:58:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:05,780 INFO L225 Difference]: With dead ends: 73 [2018-07-24 10:58:05,780 INFO L226 Difference]: Without dead ends: 57 [2018-07-24 10:58:05,781 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2018-07-24 10:58:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-24 10:58:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2018-07-24 10:58:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-24 10:58:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-07-24 10:58:05,791 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 24 [2018-07-24 10:58:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:05,792 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-07-24 10:58:05,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 10:58:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-07-24 10:58:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-24 10:58:05,794 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:05,795 INFO L353 BasicCegarLoop]: trace histogram [8, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:05,795 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1699386968, now seen corresponding path program 3 times [2018-07-24 10:58:05,795 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:05,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:05,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:05,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:05,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 10:58:05,944 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:05,945 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:05,961 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:05,961 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:05,987 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-24 10:58:05,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:05,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 10:58:06,139 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 10:58:06,326 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:06,326 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:06,342 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:06,343 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:06,379 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-24 10:58:06,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:06,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 10:58:06,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 10:58:06,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:06,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 15 [2018-07-24 10:58:06,423 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:06,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 10:58:06,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 10:58:06,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:58:06,425 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2018-07-24 10:58:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:07,203 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-07-24 10:58:07,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 10:58:07,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-07-24 10:58:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:07,205 INFO L225 Difference]: With dead ends: 106 [2018-07-24 10:58:07,206 INFO L226 Difference]: Without dead ends: 84 [2018-07-24 10:58:07,207 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2018-07-24 10:58:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-24 10:58:07,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-07-24 10:58:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-24 10:58:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-07-24 10:58:07,222 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 41 [2018-07-24 10:58:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:07,222 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-07-24 10:58:07,222 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 10:58:07,223 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-07-24 10:58:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-24 10:58:07,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:07,225 INFO L353 BasicCegarLoop]: trace histogram [15, 12, 12, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:07,225 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:07,225 INFO L82 PathProgramCache]: Analyzing trace with hash -319190378, now seen corresponding path program 4 times [2018-07-24 10:58:07,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:07,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:07,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 10:58:07,486 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:07,486 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:07,500 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:58:07,500 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:58:07,546 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:58:07,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:07,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 10:58:07,725 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 10:58:07,846 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:07,846 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:07,862 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:58:07,862 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:58:07,914 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:58:07,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:07,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 10:58:07,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 10:58:08,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:08,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 19 [2018-07-24 10:58:08,019 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:08,019 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 10:58:08,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 10:58:08,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-07-24 10:58:08,022 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 13 states. [2018-07-24 10:58:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:08,113 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2018-07-24 10:58:08,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:58:08,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2018-07-24 10:58:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:08,115 INFO L225 Difference]: With dead ends: 119 [2018-07-24 10:58:08,116 INFO L226 Difference]: Without dead ends: 77 [2018-07-24 10:58:08,117 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-07-24 10:58:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-24 10:58:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2018-07-24 10:58:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-24 10:58:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-07-24 10:58:08,130 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2018-07-24 10:58:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:08,131 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-07-24 10:58:08,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 10:58:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-07-24 10:58:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-24 10:58:08,134 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:08,134 INFO L353 BasicCegarLoop]: trace histogram [18, 15, 15, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:08,134 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash 414540755, now seen corresponding path program 5 times [2018-07-24 10:58:08,135 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:08,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:08,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-07-24 10:58:08,539 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:08,539 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:08,554 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:58:08,554 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:08,591 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-07-24 10:58:08,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:08,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-07-24 10:58:08,706 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-07-24 10:58:09,009 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:09,009 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:09,028 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:58:09,028 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:09,169 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-07-24 10:58:09,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:09,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-07-24 10:58:09,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-07-24 10:58:09,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:09,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-07-24 10:58:09,375 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:09,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 10:58:09,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 10:58:09,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:58:09,379 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 15 states. [2018-07-24 10:58:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:09,455 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-07-24 10:58:09,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:58:09,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2018-07-24 10:58:09,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:09,457 INFO L225 Difference]: With dead ends: 134 [2018-07-24 10:58:09,457 INFO L226 Difference]: Without dead ends: 86 [2018-07-24 10:58:09,458 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:58:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-24 10:58:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2018-07-24 10:58:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-24 10:58:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2018-07-24 10:58:09,471 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 73 [2018-07-24 10:58:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:09,472 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2018-07-24 10:58:09,472 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 10:58:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2018-07-24 10:58:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-24 10:58:09,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:09,475 INFO L353 BasicCegarLoop]: trace histogram [21, 18, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:09,475 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1138844106, now seen corresponding path program 6 times [2018-07-24 10:58:09,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:09,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:09,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:09,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:09,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-07-24 10:58:09,617 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:09,617 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:09,625 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:58:09,625 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:58:09,652 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-07-24 10:58:09,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:09,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 10:58:09,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 10:58:10,067 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:10,067 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:10,082 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:58:10,082 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:58:10,150 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-07-24 10:58:10,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:10,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 10:58:10,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 10:58:10,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:10,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 7, 7] total 20 [2018-07-24 10:58:10,225 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:10,225 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 10:58:10,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 10:58:10,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:58:10,226 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 15 states. [2018-07-24 10:58:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:11,471 INFO L93 Difference]: Finished difference Result 201 states and 214 transitions. [2018-07-24 10:58:11,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 10:58:11,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-07-24 10:58:11,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:11,473 INFO L225 Difference]: With dead ends: 201 [2018-07-24 10:58:11,473 INFO L226 Difference]: Without dead ends: 147 [2018-07-24 10:58:11,476 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1143, Invalid=2397, Unknown=0, NotChecked=0, Total=3540 [2018-07-24 10:58:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-24 10:58:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2018-07-24 10:58:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-24 10:58:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2018-07-24 10:58:11,494 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 82 [2018-07-24 10:58:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:11,494 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2018-07-24 10:58:11,494 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 10:58:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2018-07-24 10:58:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-24 10:58:11,496 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:11,497 INFO L353 BasicCegarLoop]: trace histogram [32, 28, 28, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:11,497 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash -293632002, now seen corresponding path program 7 times [2018-07-24 10:58:11,497 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:11,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:11,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:11,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:11,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-24 10:58:11,709 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:11,709 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:11,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:11,718 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:11,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-24 10:58:12,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-24 10:58:12,249 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:12,249 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:12,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:12,268 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:12,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-24 10:58:12,360 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-24 10:58:12,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:12,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 22 [2018-07-24 10:58:12,435 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:12,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 10:58:12,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 10:58:12,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-07-24 10:58:12,436 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 19 states. [2018-07-24 10:58:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:12,577 INFO L93 Difference]: Finished difference Result 220 states and 231 transitions. [2018-07-24 10:58:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 10:58:12,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2018-07-24 10:58:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:12,580 INFO L225 Difference]: With dead ends: 220 [2018-07-24 10:58:12,580 INFO L226 Difference]: Without dead ends: 134 [2018-07-24 10:58:12,581 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 445 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-07-24 10:58:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-24 10:58:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-07-24 10:58:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-24 10:58:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2018-07-24 10:58:12,610 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 117 [2018-07-24 10:58:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:12,610 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2018-07-24 10:58:12,610 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-24 10:58:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2018-07-24 10:58:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 10:58:12,621 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:12,621 INFO L353 BasicCegarLoop]: trace histogram [36, 32, 32, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:12,622 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:12,622 INFO L82 PathProgramCache]: Analyzing trace with hash -210025646, now seen corresponding path program 8 times [2018-07-24 10:58:12,622 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:12,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:12,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:12,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:12,625 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-07-24 10:58:12,873 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:12,873 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:12,881 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:12,881 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:12,934 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:12,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:12,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-07-24 10:58:13,086 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-07-24 10:58:13,224 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:13,224 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:13,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:13,241 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:13,323 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:13,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:13,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-07-24 10:58:13,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-07-24 10:58:13,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:13,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 23 [2018-07-24 10:58:13,557 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:13,558 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-24 10:58:13,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-24 10:58:13,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:13,559 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 21 states. [2018-07-24 10:58:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:13,682 INFO L93 Difference]: Finished difference Result 241 states and 252 transitions. [2018-07-24 10:58:13,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 10:58:13,683 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2018-07-24 10:58:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:13,684 INFO L225 Difference]: With dead ends: 241 [2018-07-24 10:58:13,684 INFO L226 Difference]: Without dead ends: 146 [2018-07-24 10:58:13,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 489 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-24 10:58:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2018-07-24 10:58:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-24 10:58:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2018-07-24 10:58:13,711 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 129 [2018-07-24 10:58:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:13,712 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2018-07-24 10:58:13,712 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-24 10:58:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2018-07-24 10:58:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-24 10:58:13,718 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:13,719 INFO L353 BasicCegarLoop]: trace histogram [40, 36, 36, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:13,719 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1652018178, now seen corresponding path program 9 times [2018-07-24 10:58:13,719 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:13,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:13,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:13,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:13,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 851 proven. 126 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2018-07-24 10:58:13,971 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:13,971 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:13,979 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:13,979 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:14,015 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-07-24 10:58:14,015 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:14,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 854 proven. 126 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-07-24 10:58:14,177 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 11 proven. 969 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-07-24 10:58:14,312 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:14,312 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:14,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:14,328 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:14,453 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-07-24 10:58:14,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:14,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 854 proven. 126 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-07-24 10:58:14,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 11 proven. 969 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-07-24 10:58:14,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:14,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 23 [2018-07-24 10:58:14,698 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:14,698 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-24 10:58:14,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-24 10:58:14,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:14,699 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand 23 states. [2018-07-24 10:58:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:14,874 INFO L93 Difference]: Finished difference Result 262 states and 273 transitions. [2018-07-24 10:58:14,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 10:58:14,875 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2018-07-24 10:58:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:14,876 INFO L225 Difference]: With dead ends: 262 [2018-07-24 10:58:14,876 INFO L226 Difference]: Without dead ends: 158 [2018-07-24 10:58:14,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 532 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-07-24 10:58:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-24 10:58:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-07-24 10:58:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-24 10:58:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2018-07-24 10:58:14,894 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 141 [2018-07-24 10:58:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:14,895 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2018-07-24 10:58:14,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-24 10:58:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2018-07-24 10:58:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-24 10:58:14,898 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:14,898 INFO L353 BasicCegarLoop]: trace histogram [44, 40, 40, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:14,898 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash -969563822, now seen corresponding path program 10 times [2018-07-24 10:58:14,899 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:14,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:14,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:14,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:14,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-24 10:58:15,121 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:15,121 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:15,128 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:58:15,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:58:15,171 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:58:15,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:15,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-24 10:58:15,471 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-24 10:58:15,757 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:15,757 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:15,774 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:58:15,774 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:58:15,886 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:58:15,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:15,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-24 10:58:15,945 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-24 10:58:16,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:16,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 19 [2018-07-24 10:58:16,038 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:16,038 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 10:58:16,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 10:58:16,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-07-24 10:58:16,039 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 13 states. [2018-07-24 10:58:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:16,180 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-07-24 10:58:16,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:58:16,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-07-24 10:58:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:16,182 INFO L225 Difference]: With dead ends: 227 [2018-07-24 10:58:16,182 INFO L226 Difference]: Without dead ends: 222 [2018-07-24 10:58:16,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-07-24 10:58:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-24 10:58:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2018-07-24 10:58:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-24 10:58:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2018-07-24 10:58:16,201 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 153 [2018-07-24 10:58:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:16,202 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2018-07-24 10:58:16,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 10:58:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2018-07-24 10:58:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-24 10:58:16,204 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:16,205 INFO L353 BasicCegarLoop]: trace histogram [55, 50, 50, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:16,205 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1779605514, now seen corresponding path program 11 times [2018-07-24 10:58:16,205 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:16,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:16,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:16,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:16,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-07-24 10:58:16,719 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:16,719 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:16,727 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:58:16,727 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:16,812 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-07-24 10:58:16,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:16,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-07-24 10:58:17,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-07-24 10:58:17,287 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:17,288 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:17,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:58:17,303 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:17,947 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-07-24 10:58:17,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:17,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-07-24 10:58:18,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-07-24 10:58:18,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:18,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-07-24 10:58:18,147 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:18,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 10:58:18,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 10:58:18,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:58:18,148 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 15 states. [2018-07-24 10:58:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:18,411 INFO L93 Difference]: Finished difference Result 262 states and 269 transitions. [2018-07-24 10:58:18,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:58:18,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2018-07-24 10:58:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:18,415 INFO L225 Difference]: With dead ends: 262 [2018-07-24 10:58:18,415 INFO L226 Difference]: Without dead ends: 257 [2018-07-24 10:58:18,416 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 737 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:58:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-24 10:58:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 224. [2018-07-24 10:58:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-24 10:58:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2018-07-24 10:58:18,438 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 188 [2018-07-24 10:58:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:18,439 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 230 transitions. [2018-07-24 10:58:18,439 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 10:58:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 230 transitions. [2018-07-24 10:58:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-24 10:58:18,442 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:18,442 INFO L353 BasicCegarLoop]: trace histogram [66, 60, 60, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:18,442 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:18,442 INFO L82 PathProgramCache]: Analyzing trace with hash 388824786, now seen corresponding path program 12 times [2018-07-24 10:58:18,443 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:18,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:18,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:18,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:18,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-24 10:58:18,829 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:18,829 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:18,837 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:58:18,837 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:58:19,046 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-07-24 10:58:19,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:19,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-24 10:58:19,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-24 10:58:19,487 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:19,487 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:19,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:58:19,503 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:58:20,222 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-07-24 10:58:20,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:20,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-24 10:58:20,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-24 10:58:20,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:20,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10] total 21 [2018-07-24 10:58:20,435 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:20,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-24 10:58:20,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-24 10:58:20,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-07-24 10:58:20,437 INFO L87 Difference]: Start difference. First operand 224 states and 230 transitions. Second operand 17 states. [2018-07-24 10:58:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:20,609 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-07-24 10:58:20,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 10:58:20,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-07-24 10:58:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:20,612 INFO L225 Difference]: With dead ends: 297 [2018-07-24 10:58:20,612 INFO L226 Difference]: Without dead ends: 292 [2018-07-24 10:58:20,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 873 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-07-24 10:58:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-24 10:58:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2018-07-24 10:58:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-24 10:58:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 266 transitions. [2018-07-24 10:58:20,638 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 266 transitions. Word has length 223 [2018-07-24 10:58:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:20,638 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 266 transitions. [2018-07-24 10:58:20,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-24 10:58:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 266 transitions. [2018-07-24 10:58:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-24 10:58:20,642 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:20,642 INFO L353 BasicCegarLoop]: trace histogram [77, 70, 70, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:20,642 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1062399370, now seen corresponding path program 13 times [2018-07-24 10:58:20,643 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:20,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:20,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:20,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:20,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-07-24 10:58:21,594 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:21,594 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:21,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:21,617 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:21,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-07-24 10:58:22,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-07-24 10:58:22,486 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:22,486 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:22,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:22,502 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:58:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:22,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-07-24 10:58:22,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-07-24 10:58:23,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:23,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 22 [2018-07-24 10:58:23,738 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:23,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 10:58:23,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 10:58:23,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-07-24 10:58:23,739 INFO L87 Difference]: Start difference. First operand 259 states and 266 transitions. Second operand 19 states. [2018-07-24 10:58:23,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:23,855 INFO L93 Difference]: Finished difference Result 332 states and 341 transitions. [2018-07-24 10:58:23,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 10:58:23,855 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2018-07-24 10:58:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:23,857 INFO L225 Difference]: With dead ends: 332 [2018-07-24 10:58:23,857 INFO L226 Difference]: Without dead ends: 327 [2018-07-24 10:58:23,858 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 1009 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-07-24 10:58:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-24 10:58:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 294. [2018-07-24 10:58:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-24 10:58:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 302 transitions. [2018-07-24 10:58:23,887 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 302 transitions. Word has length 258 [2018-07-24 10:58:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:23,888 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 302 transitions. [2018-07-24 10:58:23,888 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-24 10:58:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 302 transitions. [2018-07-24 10:58:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-24 10:58:23,892 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:23,892 INFO L353 BasicCegarLoop]: trace histogram [88, 80, 80, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:23,892 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash -790873006, now seen corresponding path program 14 times [2018-07-24 10:58:23,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:23,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:23,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:58:23,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:23,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-24 10:58:24,203 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:24,203 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:24,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:24,213 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:24,306 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:24,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:24,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-24 10:58:24,977 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-24 10:58:25,198 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:25,198 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 29 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:25,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:58:25,214 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:58:25,381 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:58:25,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:25,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-24 10:58:25,545 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-24 10:58:25,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:25,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 23 [2018-07-24 10:58:25,841 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:25,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-24 10:58:25,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-24 10:58:25,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:25,843 INFO L87 Difference]: Start difference. First operand 294 states and 302 transitions. Second operand 21 states. [2018-07-24 10:58:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:25,972 INFO L93 Difference]: Finished difference Result 367 states and 377 transitions. [2018-07-24 10:58:25,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 10:58:25,972 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-07-24 10:58:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:25,975 INFO L225 Difference]: With dead ends: 367 [2018-07-24 10:58:25,975 INFO L226 Difference]: Without dead ends: 362 [2018-07-24 10:58:25,975 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1145 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-24 10:58:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 329. [2018-07-24 10:58:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-24 10:58:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 338 transitions. [2018-07-24 10:58:26,008 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 338 transitions. Word has length 293 [2018-07-24 10:58:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:26,008 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 338 transitions. [2018-07-24 10:58:26,008 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-24 10:58:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 338 transitions. [2018-07-24 10:58:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-24 10:58:26,010 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:26,010 INFO L353 BasicCegarLoop]: trace histogram [99, 90, 90, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:26,011 INFO L414 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash 547939574, now seen corresponding path program 15 times [2018-07-24 10:58:26,011 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:26,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:26,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:26,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:26,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-07-24 10:58:27,203 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:27,203 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:27,210 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:27,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:27,488 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-07-24 10:58:27,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:27,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-07-24 10:58:27,762 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-07-24 10:58:27,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:58:27,979 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:58:27,994 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:58:27,995 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:58:30,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-07-24 10:58:30,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:58:30,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:58:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-07-24 10:58:30,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:58:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-07-24 10:58:30,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:58:30,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 23 [2018-07-24 10:58:30,540 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:58:30,541 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-24 10:58:30,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-24 10:58:30,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:58:30,542 INFO L87 Difference]: Start difference. First operand 329 states and 338 transitions. Second operand 23 states. [2018-07-24 10:58:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:31,368 INFO L93 Difference]: Finished difference Result 402 states and 413 transitions. [2018-07-24 10:58:31,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 10:58:31,369 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 328 [2018-07-24 10:58:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:31,372 INFO L225 Difference]: With dead ends: 402 [2018-07-24 10:58:31,372 INFO L226 Difference]: Without dead ends: 397 [2018-07-24 10:58:31,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1280 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-07-24 10:58:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-24 10:58:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 364. [2018-07-24 10:58:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-24 10:58:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 374 transitions. [2018-07-24 10:58:31,425 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 374 transitions. Word has length 328 [2018-07-24 10:58:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:31,427 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 374 transitions. [2018-07-24 10:58:31,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-24 10:58:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 374 transitions. [2018-07-24 10:58:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-24 10:58:31,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:58:31,430 INFO L353 BasicCegarLoop]: trace histogram [110, 100, 100, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:58:31,430 INFO L414 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:58:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1390107090, now seen corresponding path program 16 times [2018-07-24 10:58:31,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:58:31,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:31,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:58:31,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:58:31,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:58:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:58:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17095 backedges. 17077 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 10:58:38,293 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:58:38,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2018-07-24 10:58:38,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:58:38,294 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-24 10:58:38,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-24 10:58:38,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2018-07-24 10:58:38,299 INFO L87 Difference]: Start difference. First operand 364 states and 374 transitions. Second operand 105 states. [2018-07-24 10:58:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:58:40,950 INFO L93 Difference]: Finished difference Result 14899 states and 15359 transitions. [2018-07-24 10:58:40,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-24 10:58:40,950 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 363 [2018-07-24 10:58:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:58:40,952 INFO L225 Difference]: With dead ends: 14899 [2018-07-24 10:58:40,952 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 10:58:40,981 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2018-07-24 10:58:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 10:58:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 10:58:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 10:58:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 10:58:40,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2018-07-24 10:58:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:58:40,983 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 10:58:40,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-24 10:58:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 10:58:40,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 10:58:40,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 10:58:43,170 WARN L169 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-07-24 10:58:49,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,473 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,518 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,839 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:49,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,788 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:50,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:51,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:52,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:53,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:54,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:55,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:55,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:55,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,475 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:56,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:57,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,335 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:58,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:58:59,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:00,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:00,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:00,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:00,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,093 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,289 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:01,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:02,247 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:02,289 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:02,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:02,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:02,906 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:03,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:05,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:05,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:06,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:06,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:06,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:06,717 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:06,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:07,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:07,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:07,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:08,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:08,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:09,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:10,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:10,707 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:11,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:11,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:12,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:12,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:13,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:14,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:15,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:16,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:18,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:19,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:24,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:24,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:28,498 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:29,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:31,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:32,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:34,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:38,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:39,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:40,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:44,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:47,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:59:53,144 WARN L169 SmtUtils]: Spent 1.17 m on a formula simplification. DAG size of input: 5154 DAG size of output: 1799 [2018-07-24 10:59:59,925 WARN L169 SmtUtils]: Spent 6.76 s on a formula simplification. DAG size of input: 664 DAG size of output: 59 [2018-07-24 11:01:04,430 WARN L169 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 1775 DAG size of output: 363 [2018-07-24 11:01:04,442 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-24 11:01:04,442 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-24 11:01:04,442 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-24 11:01:04,442 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-24 11:01:04,443 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-24 11:01:04,443 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-24 11:01:04,444 INFO L417 ceAbstractionStarter]: At program point L18'''(lines 18 20) the Hoare annotation is: (let ((.cse4 (<= main_~j~0 5)) (.cse0 (<= 10 main_~m~0)) (.cse32 (<= main_~j~0 6))) (let ((.cse14 (<= main_~j~0 8)) (.cse21 (<= main_~j~0 2)) (.cse25 (<= main_~j~0 3)) (.cse2 (<= main_~j~0 9)) (.cse38 (<= main_~j~0 1)) (.cse18 (<= main_~j~0 4)) (.cse11 (<= main_~j~0 0)) (.cse40 (and .cse0 .cse32)) (.cse36 (and .cse4 .cse0)) (.cse3 (<= 10 main_~n~0))) (let ((.cse30 (<= 80 main_~k~0)) (.cse22 (<= 70 main_~k~0)) (.cse28 (and .cse36 .cse3)) (.cse16 (and .cse40 .cse3)) (.cse27 (<= 60 main_~k~0)) (.cse31 (and .cse0 .cse11)) (.cse37 (<= 20 main_~k~0)) (.cse29 (and .cse0 .cse18)) (.cse23 (<= main_~i~0 5)) (.cse13 (and .cse0 .cse38 .cse3)) (.cse12 (<= main_~i~0 8)) (.cse39 (<= 90 main_~k~0)) (.cse9 (<= 10 main_~k~0)) (.cse35 (<= 50 main_~k~0)) (.cse17 (<= main_~i~0 7)) (.cse26 (and .cse0 .cse2)) (.cse33 (and .cse0 .cse25 .cse3)) (.cse34 (<= 30 main_~k~0)) (.cse19 (<= main_~i~0 0)) (.cse20 (<= main_~i~0 3)) (.cse5 (and .cse0 .cse21 .cse3)) (.cse10 (<= main_~i~0 1)) (.cse1 (<= main_~i~0 2)) (.cse8 (<= main_~j~0 7)) (.cse24 (and .cse14 .cse0)) (.cse6 (<= main_~i~0 6)) (.cse7 (<= (+ main_~i~0 1) main_~n~0)) (.cse41 (<= 40 main_~k~0)) (.cse15 (<= main_~i~0 4))) (or (and .cse0 (<= 29 main_~k~0) .cse1 .cse2 .cse3) (and .cse4 .cse0 (<= 25 main_~k~0) .cse1 .cse3) (and (<= 62 main_~k~0) .cse5 .cse6) (and (and .cse7 .cse0 .cse8 .cse3) (<= 97 main_~k~0)) (and .cse0 .cse9 .cse10 .cse11 .cse3) (and (<= 81 main_~k~0) .cse12 .cse13) (and .cse5 (<= 82 main_~k~0) .cse12) (and .cse14 .cse0 .cse15 (<= 48 main_~k~0) .cse3) (and .cse16 .cse17 (<= 76 main_~k~0)) (and .cse0 .cse15 .cse18 (<= 44 main_~k~0) .cse3) (and .cse0 (<= 7 main_~k~0) .cse8 .cse19 .cse3) (and .cse4 .cse0 (<= 45 main_~k~0) .cse15 .cse3) (and .cse20 .cse0 .cse21 (<= 32 main_~k~0) .cse3) (and .cse22 .cse0 .cse6 .cse3) (and (<= 2 main_~k~0) .cse0 .cse21 .cse19 .cse3) (and .cse23 .cse13 (<= 51 main_~k~0)) (and (<= 58 main_~k~0) .cse23 .cse3 .cse24) (and .cse0 .cse25 .cse15 (<= 43 main_~k~0) .cse3) (and (<= 89 main_~k~0) .cse26 .cse12 .cse3) (and (<= 66 main_~k~0) .cse16 .cse6) (and .cse0 .cse27 .cse23 .cse3) (and (<= 95 main_~k~0) (and .cse7 .cse28)) (and .cse0 .cse10 (<= 17 main_~k~0) .cse8 .cse3) (and (<= 33 main_~k~0) .cse20 .cse0 .cse25 .cse3) (and .cse29 (<= 74 main_~k~0) .cse17 .cse3) (and .cse30 .cse31 .cse12 .cse3) (and .cse0 .cse1 .cse18 .cse3 (<= 24 main_~k~0)) (and .cse14 .cse0 (<= 8 main_~k~0) .cse19 .cse3) (and (<= 23 main_~k~0) .cse0 .cse25 .cse1 .cse3) (and .cse0 .cse15 .cse2 (<= 49 main_~k~0) .cse3) (and (<= 86 main_~k~0) .cse16 .cse12) (and .cse5 .cse17 (<= 72 main_~k~0)) (and .cse12 .cse3 .cse24 (<= 88 main_~k~0)) (and .cse0 (<= 26 main_~k~0) .cse1 .cse3 .cse32) (and (and .cse29 .cse7 .cse3) (<= 94 main_~k~0)) (and .cse13 .cse15 (<= 41 main_~k~0)) (and .cse33 .cse17 (<= 73 main_~k~0)) (and .cse0 .cse25 (<= 3 main_~k~0) .cse19 .cse3) (and .cse34 .cse0 .cse1 .cse3) (and .cse30 .cse0 .cse17 .cse3) (and .cse0 .cse18 .cse19 (<= 4 main_~k~0) .cse3) (and .cse26 .cse17 (<= 79 main_~k~0) .cse3) (and (<= 37 main_~k~0) .cse20 .cse0 .cse8 .cse3) (and .cse0 .cse23 .cse8 .cse3 (<= 57 main_~k~0)) (and (<= 93 main_~k~0) (and .cse7 .cse33)) (and .cse20 .cse0 (<= 36 main_~k~0) .cse3 .cse32) (and (<= 64 main_~k~0) .cse29 .cse6 .cse3) (and .cse35 .cse23 .cse3 .cse31) (and .cse22 .cse31 .cse17 .cse3) (and .cse0 .cse15 (<= 46 main_~k~0) .cse3 .cse32) (and (<= 85 main_~k~0) .cse12 .cse28) (and (<= 16 main_~k~0) .cse0 .cse10 .cse3 .cse32) (and (<= 59 main_~k~0) .cse23 .cse26 .cse3) (and .cse0 (<= 0 main_~k~0) .cse11 .cse19 .cse3) (and (<= 75 main_~k~0) .cse36 .cse17 .cse3) (and .cse20 .cse0 .cse18 (<= 34 main_~k~0) .cse3) (and .cse0 .cse10 .cse21 (<= 12 main_~k~0) .cse3) (and (<= 96 main_~k~0) (and .cse7 .cse16)) (and .cse0 .cse37 .cse1 .cse11 .cse3) (and .cse6 .cse13 (<= 61 main_~k~0)) (and (<= 54 main_~k~0) .cse0 .cse23 .cse18 .cse3) (and (<= 91 main_~k~0) (and .cse7 .cse13)) (and .cse14 (<= 28 main_~k~0) .cse0 .cse1 .cse3) (and .cse0 (<= 6 main_~k~0) .cse19 .cse3 .cse32) (and .cse20 .cse4 .cse0 (<= 35 main_~k~0) .cse3) (and .cse23 (<= 52 main_~k~0) .cse5) (and .cse0 .cse10 .cse2 .cse3 (<= 19 main_~k~0)) (and .cse4 .cse0 (<= 15 main_~k~0) .cse10 .cse3) (and (<= 53 main_~k~0) .cse0 .cse25 .cse23 .cse3) (and .cse0 (<= 9 main_~k~0) .cse2 .cse19 .cse3) (and (<= 21 main_~k~0) .cse0 .cse38 .cse1 .cse3) (and .cse27 .cse6 .cse3 .cse31) (and .cse20 .cse0 (<= 39 main_~k~0) .cse2 .cse3) (and (and .cse7 .cse31 .cse3) .cse39) (and (<= 83 main_~k~0) .cse33 .cse12) (and .cse0 .cse12 .cse8 (<= 87 main_~k~0) .cse3) (and .cse0 .cse25 .cse10 (<= 13 main_~k~0) .cse3) (and .cse0 .cse37 .cse10 .cse3) (and .cse0 .cse15 (<= 47 main_~k~0) .cse8 .cse3) (and (<= 69 main_~k~0) .cse26 .cse6 .cse3) (and .cse36 (<= 55 main_~k~0) .cse23 .cse3) (and .cse29 (<= 84 main_~k~0) .cse12 .cse3) (and (<= 56 main_~k~0) .cse23 .cse40 .cse3) (and .cse0 .cse15 .cse21 (<= 42 main_~k~0) .cse3) (and (<= 67 main_~k~0) .cse0 .cse8 .cse6 .cse3) (and (<= 71 main_~k~0) .cse13 .cse17) (and .cse0 .cse12 .cse3 .cse39) (and .cse20 .cse0 .cse41 .cse3) (and .cse14 .cse0 (<= 18 main_~k~0) .cse10 .cse3) (and .cse0 .cse9 .cse19 .cse3) (and .cse0 .cse8 .cse17 (<= 77 main_~k~0) .cse3) (and .cse35 .cse0 .cse15 .cse3) (and (<= 78 main_~k~0) .cse17 .cse3 .cse24) (and (<= 99 main_~k~0) (and .cse7 .cse26 .cse3)) (and .cse0 .cse38 .cse19 .cse3 (<= 1 main_~k~0)) (and .cse20 .cse0 .cse38 .cse3 (<= 31 main_~k~0)) (and .cse0 (<= 22 main_~k~0) .cse1 .cse21 .cse3) (and .cse33 (<= 63 main_~k~0) .cse6) (and (<= 68 main_~k~0) .cse6 .cse3 .cse24) (and (<= 11 main_~k~0) .cse0 .cse38 .cse10 .cse3) (and .cse34 .cse20 .cse0 .cse11 .cse3) (and .cse4 .cse0 (<= 5 main_~k~0) .cse19 .cse3) (and .cse20 .cse14 .cse0 (<= 38 main_~k~0) .cse3) (and (and .cse5 .cse7) (<= 92 main_~k~0)) (and (<= 14 main_~k~0) .cse0 .cse10 .cse18 .cse3) (and .cse0 .cse1 .cse8 .cse3 (<= 27 main_~k~0)) (and (and .cse7 .cse3 .cse24) (<= 98 main_~k~0)) (and .cse36 (<= 65 main_~k~0) .cse6 .cse3) (and (and .cse7 .cse0 .cse3) (<= 100 main_~k~0)) (and .cse0 .cse41 .cse15 .cse11 .cse3))))) [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point L17''(lines 17 21) no Hoare annotation was computed. [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point L18''(lines 18 20) no Hoare annotation was computed. [2018-07-24 11:01:04,445 INFO L417 ceAbstractionStarter]: At program point L17''''(lines 17 21) the Hoare annotation is: (and (<= 10 main_~m~0) (<= 100 main_~k~0) (<= 10 main_~n~0)) [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2018-07-24 11:01:04,445 INFO L417 ceAbstractionStarter]: At program point L17'''(lines 17 21) the Hoare annotation is: (let ((.cse0 (<= 10 main_~m~0)) (.cse1 (<= 10 main_~n~0))) (or (and (<= 30 main_~k~0) (<= main_~i~0 3) .cse0 .cse1) (and .cse0 (<= 100 main_~k~0) .cse1) (and .cse0 (<= 40 main_~k~0) (<= main_~i~0 4) .cse1) (and .cse0 (<= 0 main_~k~0) (<= main_~i~0 0) .cse1) (and .cse0 (<= 60 main_~k~0) (<= main_~i~0 6) .cse1) (and .cse0 (<= 10 main_~k~0) (<= main_~i~0 1) .cse1) (and (<= 80 main_~k~0) .cse0 (<= main_~i~0 8) .cse1) (and (<= 50 main_~k~0) .cse0 (<= main_~i~0 5) .cse1) (and .cse0 (<= main_~i~0 9) .cse1 (<= 90 main_~k~0)) (and (<= 70 main_~k~0) .cse0 (<= main_~i~0 7) .cse1) (and .cse0 (<= 20 main_~k~0) (<= main_~i~0 2) .cse1))) [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2018-07-24 11:01:04,445 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2018-07-24 11:01:04,445 INFO L421 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-24 11:01:04,446 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_new_nested_true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-07-24 11:01:04,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:01:04 BoogieIcfgContainer [2018-07-24 11:01:04,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:01:04,482 INFO L168 Benchmark]: Toolchain (without parser) took 182544.07 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -870.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-07-24 11:01:04,484 INFO L168 Benchmark]: CDTParser took 0.30 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. [2018-07-24 11:01:04,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.92 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. [2018-07-24 11:01:04,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.09 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. [2018-07-24 11:01:04,485 INFO L168 Benchmark]: Boogie Preprocessor took 22.45 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. [2018-07-24 11:01:04,486 INFO L168 Benchmark]: RCFGBuilder took 512.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -784.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:01:04,486 INFO L168 Benchmark]: TraceAbstraction took 181682.73 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -97.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-07-24 11:01:04,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 296.92 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 25.09 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 22.45 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 512.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -784.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 181682.73 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -97.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((30 <= k && i <= 3) && 10 <= m) && 10 <= n) || ((10 <= m && 100 <= k) && 10 <= n)) || (((10 <= m && 40 <= k) && i <= 4) && 10 <= n)) || (((10 <= m && 0 <= k) && i <= 0) && 10 <= n)) || (((10 <= m && 60 <= k) && i <= 6) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 1) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 8) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 5) && 10 <= n)) || (((10 <= m && i <= 9) && 10 <= n) && 90 <= k)) || (((70 <= k && 10 <= m) && i <= 7) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 2) && 10 <= n) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 29 <= k) && i <= 2) && j <= 9) && 10 <= n) || ((((j <= 5 && 10 <= m) && 25 <= k) && i <= 2) && 10 <= n)) || ((62 <= k && (10 <= m && j <= 2) && 10 <= n) && i <= 6)) || ((((i + 1 <= n && 10 <= m) && j <= 7) && 10 <= n) && 97 <= k)) || ((((10 <= m && 10 <= k) && i <= 1) && j <= 0) && 10 <= n)) || ((81 <= k && i <= 8) && (10 <= m && j <= 1) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && 82 <= k) && i <= 8)) || ((((j <= 8 && 10 <= m) && i <= 4) && 48 <= k) && 10 <= n)) || ((((10 <= m && j <= 6) && 10 <= n) && i <= 7) && 76 <= k)) || ((((10 <= m && i <= 4) && j <= 4) && 44 <= k) && 10 <= n)) || ((((10 <= m && 7 <= k) && j <= 7) && i <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 45 <= k) && i <= 4) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 2) && 32 <= k) && 10 <= n)) || (((70 <= k && 10 <= m) && i <= 6) && 10 <= n)) || ((((2 <= k && 10 <= m) && j <= 2) && i <= 0) && 10 <= n)) || ((i <= 5 && (10 <= m && j <= 1) && 10 <= n) && 51 <= k)) || (((58 <= k && i <= 5) && 10 <= n) && j <= 8 && 10 <= m)) || ((((10 <= m && j <= 3) && i <= 4) && 43 <= k) && 10 <= n)) || (((89 <= k && 10 <= m && j <= 9) && i <= 8) && 10 <= n)) || ((66 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 6)) || (((10 <= m && 60 <= k) && i <= 5) && 10 <= n)) || (95 <= k && i + 1 <= n && (j <= 5 && 10 <= m) && 10 <= n)) || ((((10 <= m && i <= 1) && 17 <= k) && j <= 7) && 10 <= n)) || ((((33 <= k && i <= 3) && 10 <= m) && j <= 3) && 10 <= n)) || ((((10 <= m && j <= 4) && 74 <= k) && i <= 7) && 10 <= n)) || (((80 <= k && 10 <= m && j <= 0) && i <= 8) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 4) && 10 <= n) && 24 <= k)) || ((((j <= 8 && 10 <= m) && 8 <= k) && i <= 0) && 10 <= n)) || ((((23 <= k && 10 <= m) && j <= 3) && i <= 2) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 9) && 49 <= k) && 10 <= n)) || ((86 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 8)) || ((((10 <= m && j <= 2) && 10 <= n) && i <= 7) && 72 <= k)) || (((i <= 8 && 10 <= n) && j <= 8 && 10 <= m) && 88 <= k)) || ((((10 <= m && 26 <= k) && i <= 2) && 10 <= n) && j <= 6)) || ((((10 <= m && j <= 4) && i + 1 <= n) && 10 <= n) && 94 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 3) && 10 <= n) && i <= 7) && 73 <= k)) || ((((10 <= m && j <= 3) && 3 <= k) && i <= 0) && 10 <= n)) || (((30 <= k && 10 <= m) && i <= 2) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 7) && 10 <= n)) || ((((10 <= m && j <= 4) && i <= 0) && 4 <= k) && 10 <= n)) || ((((10 <= m && j <= 9) && i <= 7) && 79 <= k) && 10 <= n)) || ((((37 <= k && i <= 3) && 10 <= m) && j <= 7) && 10 <= n)) || ((((10 <= m && i <= 5) && j <= 7) && 10 <= n) && 57 <= k)) || (93 <= k && i + 1 <= n && (10 <= m && j <= 3) && 10 <= n)) || ((((i <= 3 && 10 <= m) && 36 <= k) && 10 <= n) && j <= 6)) || (((64 <= k && 10 <= m && j <= 4) && i <= 6) && 10 <= n)) || (((50 <= k && i <= 5) && 10 <= n) && 10 <= m && j <= 0)) || (((70 <= k && 10 <= m && j <= 0) && i <= 7) && 10 <= n)) || ((((10 <= m && i <= 4) && 46 <= k) && 10 <= n) && j <= 6)) || ((85 <= k && i <= 8) && (j <= 5 && 10 <= m) && 10 <= n)) || ((((16 <= k && 10 <= m) && i <= 1) && 10 <= n) && j <= 6)) || (((59 <= k && i <= 5) && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && 0 <= k) && j <= 0) && i <= 0) && 10 <= n)) || (((75 <= k && j <= 5 && 10 <= m) && i <= 7) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 4) && 34 <= k) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 2) && 12 <= k) && 10 <= n)) || (96 <= k && i + 1 <= n && (10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && 20 <= k) && i <= 2) && j <= 0) && 10 <= n)) || ((i <= 6 && (10 <= m && j <= 1) && 10 <= n) && 61 <= k)) || ((((54 <= k && 10 <= m) && i <= 5) && j <= 4) && 10 <= n)) || (91 <= k && i + 1 <= n && (10 <= m && j <= 1) && 10 <= n)) || ((((j <= 8 && 28 <= k) && 10 <= m) && i <= 2) && 10 <= n)) || ((((10 <= m && 6 <= k) && i <= 0) && 10 <= n) && j <= 6)) || ((((i <= 3 && j <= 5) && 10 <= m) && 35 <= k) && 10 <= n)) || ((i <= 5 && 52 <= k) && (10 <= m && j <= 2) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 9) && 10 <= n) && 19 <= k)) || ((((j <= 5 && 10 <= m) && 15 <= k) && i <= 1) && 10 <= n)) || ((((53 <= k && 10 <= m) && j <= 3) && i <= 5) && 10 <= n)) || ((((10 <= m && 9 <= k) && j <= 9) && i <= 0) && 10 <= n)) || ((((21 <= k && 10 <= m) && j <= 1) && i <= 2) && 10 <= n)) || (((60 <= k && i <= 6) && 10 <= n) && 10 <= m && j <= 0)) || ((((i <= 3 && 10 <= m) && 39 <= k) && j <= 9) && 10 <= n)) || (((i + 1 <= n && 10 <= m && j <= 0) && 10 <= n) && 90 <= k)) || ((83 <= k && (10 <= m && j <= 3) && 10 <= n) && i <= 8)) || ((((10 <= m && i <= 8) && j <= 7) && 87 <= k) && 10 <= n)) || ((((10 <= m && j <= 3) && i <= 1) && 13 <= k) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 1) && 10 <= n)) || ((((10 <= m && i <= 4) && 47 <= k) && j <= 7) && 10 <= n)) || (((69 <= k && 10 <= m && j <= 9) && i <= 6) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 55 <= k) && i <= 5) && 10 <= n)) || ((((10 <= m && j <= 4) && 84 <= k) && i <= 8) && 10 <= n)) || (((56 <= k && i <= 5) && 10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 2) && 42 <= k) && 10 <= n)) || ((((67 <= k && 10 <= m) && j <= 7) && i <= 6) && 10 <= n)) || ((71 <= k && (10 <= m && j <= 1) && 10 <= n) && i <= 7)) || (((10 <= m && i <= 8) && 10 <= n) && 90 <= k)) || (((i <= 3 && 10 <= m) && 40 <= k) && 10 <= n)) || ((((j <= 8 && 10 <= m) && 18 <= k) && i <= 1) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 0) && 10 <= n)) || ((((10 <= m && j <= 7) && i <= 7) && 77 <= k) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 4) && 10 <= n)) || (((78 <= k && i <= 7) && 10 <= n) && j <= 8 && 10 <= m)) || (99 <= k && (i + 1 <= n && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && j <= 1) && i <= 0) && 10 <= n) && 1 <= k)) || ((((i <= 3 && 10 <= m) && j <= 1) && 10 <= n) && 31 <= k)) || ((((10 <= m && 22 <= k) && i <= 2) && j <= 2) && 10 <= n)) || ((((10 <= m && j <= 3) && 10 <= n) && 63 <= k) && i <= 6)) || (((68 <= k && i <= 6) && 10 <= n) && j <= 8 && 10 <= m)) || ((((11 <= k && 10 <= m) && j <= 1) && i <= 1) && 10 <= n)) || ((((30 <= k && i <= 3) && 10 <= m) && j <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 5 <= k) && i <= 0) && 10 <= n)) || ((((i <= 3 && j <= 8) && 10 <= m) && 38 <= k) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && i + 1 <= n) && 92 <= k)) || ((((14 <= k && 10 <= m) && i <= 1) && j <= 4) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 7) && 10 <= n) && 27 <= k)) || (((i + 1 <= n && 10 <= n) && j <= 8 && 10 <= m) && 98 <= k)) || ((((j <= 5 && 10 <= m) && 65 <= k) && i <= 6) && 10 <= n)) || (((i + 1 <= n && 10 <= m) && 10 <= n) && 100 <= k)) || ((((10 <= m && 40 <= k) && i <= 4) && j <= 0) && 10 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 181.5s OverallTime, 19 OverallIterations, 110 TraceHistogramMax, 8.1s AutomataDifference, 0.0s DeadEndRemovalTime, 143.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 867 SDtfs, 1725 SDslu, 3360 SDs, 0 SdLazy, 1186 SolverSat, 324 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8846 GetRequests, 8284 SyntacticMatches, 116 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5503 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 285 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 5143 NumberOfFragments, 1970 HoareAnnotationTreeSize, 26 FomulaSimplifications, 6246897 FormulaSimplificationTreeSizeReduction, 72.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 72380 FormulaSimplificationTreeSizeReductionInter, 71.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 6811 NumberOfCodeBlocks, 6515 NumberOfCodeBlocksAsserted, 421 NumberOfCheckSat, 11002 ConstructedInterpolants, 0 QuantifiedInterpolants, 11555734 SizeOfPredicates, 86 NumberOfNonLiveVariables, 8030 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 79 InterpolantComputations, 4 PerfectInterpolantSequences, 75784/281762 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-01-04-515.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-01-04-515.csv Received shutdown request...