java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:18:58,615 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:18:58,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:18:58,630 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:18:58,631 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:18:58,632 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:18:58,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:18:58,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:18:58,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:18:58,638 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:18:58,639 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:18:58,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:18:58,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:18:58,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:18:58,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:18:58,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:18:58,645 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:18:58,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:18:58,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:18:58,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:18:58,660 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:18:58,661 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:18:58,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:18:58,667 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:18:58,668 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:18:58,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:18:58,670 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:18:58,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:18:58,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:18:58,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:18:58,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:18:58,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:18:58,676 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:18:58,676 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:18:58,677 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:18:58,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:18:58,679 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 16:18:58,703 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:18:58,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:18:58,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:18:58,706 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:18:58,707 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:18:58,707 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:18:58,708 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:18:58,709 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:18:58,709 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:18:58,709 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:18:58,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:18:58,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:18:58,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:18:58,710 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:18:58,710 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:18:58,710 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:18:58,710 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:18:58,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:18:58,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:18:58,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:18:58,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:18:58,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:18:58,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:18:58,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:18:58,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:18:58,713 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:18:58,714 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:18:58,714 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:18:58,714 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:18:58,714 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:18:58,714 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:18:58,715 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:18:58,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:18:58,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:18:58,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:18:58,805 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:18:58,806 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:18:58,806 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-19 16:18:59,157 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bee35b2/1b85a2d5da0140dd965cbc8c110ef293/FLAGf4e837a50 [2018-09-19 16:18:59,372 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:18:59,372 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-19 16:18:59,380 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bee35b2/1b85a2d5da0140dd965cbc8c110ef293/FLAGf4e837a50 [2018-09-19 16:18:59,395 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bee35b2/1b85a2d5da0140dd965cbc8c110ef293 [2018-09-19 16:18:59,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:18:59,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:18:59,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:18:59,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:18:59,417 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:18:59,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d956bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59, skipping insertion in model container [2018-09-19 16:18:59,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,434 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:18:59,643 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:18:59,666 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:18:59,698 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:18:59,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59 WrapperNode [2018-09-19 16:18:59,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:18:59,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:18:59,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:18:59,741 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:18:59,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... [2018-09-19 16:18:59,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:18:59,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:18:59,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:18:59,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:18:59,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:18:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:18:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:18:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-19 16:18:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-19 16:18:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-19 16:18:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:18:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:18:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:18:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-19 16:18:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-19 16:18:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:18:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:18:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:18:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:18:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-19 16:18:59,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:18:59,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:18:59,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:18:59,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:18:59,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:18:59,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:18:59,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:19:00,260 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:00,312 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:00,332 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:00,481 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:19:00,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:00 BoogieIcfgContainer [2018-09-19 16:19:00,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:19:00,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:19:00,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:19:00,487 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:19:00,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:18:59" (1/3) ... [2018-09-19 16:19:00,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c06148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:00, skipping insertion in model container [2018-09-19 16:19:00,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:59" (2/3) ... [2018-09-19 16:19:00,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c06148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:00, skipping insertion in model container [2018-09-19 16:19:00,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:00" (3/3) ... [2018-09-19 16:19:00,491 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-09-19 16:19:00,501 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:19:00,511 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:19:00,561 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:19:00,562 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:19:00,562 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:19:00,562 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:19:00,562 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:19:00,562 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:19:00,562 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:19:00,562 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:19:00,563 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:19:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-19 16:19:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 16:19:00,598 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:00,600 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:00,603 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash 107662263, now seen corresponding path program 1 times [2018-09-19 16:19:00,614 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:00,615 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:00,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:00,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:00,729 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:00,747 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:00,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:19:00,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:19:00,766 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:19:00,767 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:19:00,770 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-19 16:19:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:00,799 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2018-09-19 16:19:00,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:19:00,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-19 16:19:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:00,813 INFO L225 Difference]: With dead ends: 89 [2018-09-19 16:19:00,813 INFO L226 Difference]: Without dead ends: 45 [2018-09-19 16:19:00,818 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:19:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-19 16:19:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-19 16:19:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-19 16:19:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-19 16:19:00,866 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-09-19 16:19:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:00,867 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-19 16:19:00,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:19:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-19 16:19:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:19:00,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:00,870 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:00,870 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:00,874 INFO L82 PathProgramCache]: Analyzing trace with hash 27912084, now seen corresponding path program 1 times [2018-09-19 16:19:00,875 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:00,875 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:19:00,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:00,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:01,053 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:01,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:01,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:01,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:01,069 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:01,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,069 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-09-19 16:19:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:01,223 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-19 16:19:01,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:01,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-09-19 16:19:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:01,228 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:01,229 INFO L226 Difference]: Without dead ends: 48 [2018-09-19 16:19:01,230 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-19 16:19:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-19 16:19:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-19 16:19:01,242 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2018-09-19 16:19:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:01,243 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-19 16:19:01,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-19 16:19:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-19 16:19:01,245 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:01,245 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:01,246 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash -605167360, now seen corresponding path program 1 times [2018-09-19 16:19:01,247 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:01,247 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:01,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:01,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:01,439 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:01,452 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:01,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:01,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:01,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:01,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,454 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-19 16:19:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:01,512 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-19 16:19:01,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:01,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-19 16:19:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:01,515 INFO L225 Difference]: With dead ends: 61 [2018-09-19 16:19:01,515 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:01,516 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-19 16:19:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-19 16:19:01,525 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-19 16:19:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:01,526 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-19 16:19:01,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-19 16:19:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-19 16:19:01,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:01,528 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:01,528 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:01,528 INFO L82 PathProgramCache]: Analyzing trace with hash 70594328, now seen corresponding path program 1 times [2018-09-19 16:19:01,529 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:01,529 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:01,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:01,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:01,672 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:01,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:01,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:01,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:01,687 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:01,687 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,688 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-19 16:19:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:01,790 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-19 16:19:01,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:01,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-19 16:19:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:01,793 INFO L225 Difference]: With dead ends: 61 [2018-09-19 16:19:01,793 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:01,794 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-19 16:19:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-19 16:19:01,802 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2018-09-19 16:19:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:01,802 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-19 16:19:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-19 16:19:01,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:19:01,804 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:01,804 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:01,805 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1629241852, now seen corresponding path program 1 times [2018-09-19 16:19:01,805 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:01,806 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:01,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:01,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:02,044 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:02,059 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:02,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:02,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:02,062 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:02,062 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:02,063 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-19 16:19:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:02,138 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-19 16:19:02,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:02,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-19 16:19:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:02,140 INFO L225 Difference]: With dead ends: 61 [2018-09-19 16:19:02,141 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:02,141 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-19 16:19:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-19 16:19:02,151 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2018-09-19 16:19:02,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:02,151 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-19 16:19:02,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-19 16:19:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:19:02,153 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:02,153 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:02,153 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1922644859, now seen corresponding path program 1 times [2018-09-19 16:19:02,154 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:02,154 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:02,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:02,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:02,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:02,636 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:02,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:19:02,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:19:02,637 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:19:02,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:19:02,638 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2018-09-19 16:19:02,983 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:19:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:03,592 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-19 16:19:03,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:19:03,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-19 16:19:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:03,597 INFO L225 Difference]: With dead ends: 55 [2018-09-19 16:19:03,598 INFO L226 Difference]: Without dead ends: 48 [2018-09-19 16:19:03,598 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:19:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-19 16:19:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-09-19 16:19:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-19 16:19:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-09-19 16:19:03,605 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 40 [2018-09-19 16:19:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:03,606 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-09-19 16:19:03,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:19:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-09-19 16:19:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-19 16:19:03,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:03,608 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:03,609 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1976004003, now seen corresponding path program 1 times [2018-09-19 16:19:03,610 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:03,610 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:03,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:03,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:03,777 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:03,792 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:03,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:03,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:03,793 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:03,794 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:03,794 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-09-19 16:19:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:03,838 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-09-19 16:19:03,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:03,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-19 16:19:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:03,841 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:03,841 INFO L226 Difference]: Without dead ends: 48 [2018-09-19 16:19:03,843 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-19 16:19:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-19 16:19:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-19 16:19:03,850 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 57 [2018-09-19 16:19:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:03,850 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-19 16:19:03,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-19 16:19:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-19 16:19:03,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:03,852 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:03,853 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1553097201, now seen corresponding path program 1 times [2018-09-19 16:19:03,853 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:03,854 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:03,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:03,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:03,999 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:04,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:04,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:04,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:04,014 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:04,015 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:04,015 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-19 16:19:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:04,072 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2018-09-19 16:19:04,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:04,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-19 16:19:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:04,074 INFO L225 Difference]: With dead ends: 61 [2018-09-19 16:19:04,074 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:04,075 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-19 16:19:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-19 16:19:04,081 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 58 [2018-09-19 16:19:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:04,082 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-19 16:19:04,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-19 16:19:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:19:04,083 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:04,084 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:04,084 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2111546248, now seen corresponding path program 1 times [2018-09-19 16:19:04,085 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:04,085 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:04,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:04,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:19:04,378 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:04,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:04,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:19:04,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:19:04,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:19:04,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:19:04,390 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2018-09-19 16:19:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:04,670 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-09-19 16:19:04,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:19:04,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-09-19 16:19:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:04,673 INFO L225 Difference]: With dead ends: 59 [2018-09-19 16:19:04,673 INFO L226 Difference]: Without dead ends: 48 [2018-09-19 16:19:04,674 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:19:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-19 16:19:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-19 16:19:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-19 16:19:04,681 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 59 [2018-09-19 16:19:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:04,682 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-19 16:19:04,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:19:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-19 16:19:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:19:04,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:04,684 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:04,684 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1410481670, now seen corresponding path program 1 times [2018-09-19 16:19:04,685 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:04,685 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:04,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:04,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:19:05,086 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:05,102 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:05,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:05,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:05,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:05,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:05,104 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 10 states. [2018-09-19 16:19:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:05,837 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-19 16:19:05,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:19:05,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-09-19 16:19:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:05,840 INFO L225 Difference]: With dead ends: 55 [2018-09-19 16:19:05,840 INFO L226 Difference]: Without dead ends: 45 [2018-09-19 16:19:05,841 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:19:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-19 16:19:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-19 16:19:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-19 16:19:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-19 16:19:05,853 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-19 16:19:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:05,854 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-19 16:19:05,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-19 16:19:05,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:19:05,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:05,856 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:05,856 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:05,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1887527199, now seen corresponding path program 1 times [2018-09-19 16:19:05,857 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:05,858 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:19:05,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:05,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:05,985 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:05,995 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:05,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:05,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:05,996 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:05,997 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:05,997 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-19 16:19:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:06,018 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-19 16:19:06,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:06,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-19 16:19:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:06,021 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:06,021 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:19:06,022 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:19:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-19 16:19:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-19 16:19:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-19 16:19:06,028 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-19 16:19:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:06,028 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-19 16:19:06,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-19 16:19:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:19:06,030 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:06,030 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:06,030 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1948654069, now seen corresponding path program 1 times [2018-09-19 16:19:06,031 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:06,031 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:06,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:06,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:06,209 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:06,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:06,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:06,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:06,221 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:06,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:06,222 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-19 16:19:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:06,270 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-19 16:19:06,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:06,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-19 16:19:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:06,273 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:06,273 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:19:06,274 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:19:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-19 16:19:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-19 16:19:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-19 16:19:06,280 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2018-09-19 16:19:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:06,280 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-19 16:19:06,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-19 16:19:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:19:06,281 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:06,282 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:06,282 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:06,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1655251062, now seen corresponding path program 1 times [2018-09-19 16:19:06,283 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:06,283 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:06,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:06,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:19:06,606 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:06,618 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:06,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:19:06,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:19:06,619 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:19:06,619 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:19:06,619 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-19 16:19:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:06,995 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-19 16:19:06,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:19:06,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-09-19 16:19:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:06,996 INFO L225 Difference]: With dead ends: 45 [2018-09-19 16:19:06,996 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:19:06,997 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:19:06,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:19:06,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:19:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:19:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:19:06,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-09-19 16:19:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:06,998 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:19:06,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:19:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:19:06,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:19:07,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:19:07,406 INFO L429 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-19 16:19:07,407 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L21-2(line 21) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:07,408 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L429 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: true [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point L20-4(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-09-19 16:19:07,409 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:07,410 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:07,410 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:07,410 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:07,410 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:19:07,410 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:07,410 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:07,410 INFO L422 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~res~0))) [2018-09-19 16:19:07,411 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-09-19 16:19:07,411 INFO L426 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-09-19 16:19:07,411 INFO L422 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~x~0))) [2018-09-19 16:19:07,411 INFO L426 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-09-19 16:19:07,412 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-09-19 16:19:07,412 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-09-19 16:19:07,412 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-09-19 16:19:07,412 INFO L426 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-09-19 16:19:07,412 INFO L426 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-09-19 16:19:07,412 INFO L429 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-09-19 16:19:07,413 INFO L426 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-09-19 16:19:07,413 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-19 16:19:07,413 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-19 16:19:07,413 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-19 16:19:07,413 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-09-19 16:19:07,413 INFO L422 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-19 16:19:07,413 INFO L426 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-09-19 16:19:07,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:19:07 BoogieIcfgContainer [2018-09-19 16:19:07,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:19:07,422 INFO L168 Benchmark]: Toolchain (without parser) took 8015.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -403.5 MB). Peak memory consumption was 349.9 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:07,423 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:19:07,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.97 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. [2018-09-19 16:19:07,425 INFO L168 Benchmark]: Boogie Preprocessor took 54.85 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. [2018-09-19 16:19:07,425 INFO L168 Benchmark]: RCFGBuilder took 686.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:07,426 INFO L168 Benchmark]: TraceAbstraction took 6938.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 367.9 MB). Peak memory consumption was 367.9 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:07,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.97 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 Preprocessor took 54.85 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 686.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6938.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 367.9 MB). Peak memory consumption was 367.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: 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: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 6.8s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 654 SDtfs, 31 SDslu, 1808 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 617 ConstructedInterpolants, 3 QuantifiedInterpolants, 46527 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...