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_1011b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:17:09,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:17:09,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:17:09,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:17:09,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:17:09,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:17:09,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:17:09,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:17:09,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:17:09,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:17:09,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:17:09,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:17:09,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:17:09,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:17:09,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:17:09,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:17:09,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:17:09,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:17:09,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:17:09,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:17:09,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:17:09,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:17:09,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:17:09,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:17:09,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:17:09,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:17:09,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:17:09,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:17:09,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:17:09,517 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:17:09,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:17:09,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:17:09,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:17:09,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:17:09,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:17:09,523 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:17:09,523 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 16:17:09,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:17:09,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:17:09,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:17:09,559 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:17:09,560 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:17:09,560 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:17:09,560 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:17:09,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:17:09,561 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:17:09,561 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:17:09,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:17:09,562 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:17:09,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:17:09,563 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:17:09,563 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:17:09,563 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:17:09,563 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:17:09,564 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:17:09,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:17:09,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:17:09,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:17:09,566 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:17:09,566 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:17:09,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:17:09,566 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:17:09,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:17:09,567 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:17:09,567 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:17:09,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:17:09,567 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:17:09,568 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:17:09,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:17:09,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:17:09,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:17:09,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:17:09,674 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:17:09,675 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:17:09,676 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b_true-unreach-call.c [2018-09-19 16:17:10,044 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbed51bab/a40b914c47f94c2da6454cf897f44896/FLAGb2daa6be7 [2018-09-19 16:17:10,229 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:17:10,230 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011b_true-unreach-call.c [2018-09-19 16:17:10,236 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbed51bab/a40b914c47f94c2da6454cf897f44896/FLAGb2daa6be7 [2018-09-19 16:17:10,254 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbed51bab/a40b914c47f94c2da6454cf897f44896 [2018-09-19 16:17:10,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:17:10,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:17:10,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:17:10,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:17:10,280 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:17:10,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c504890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10, skipping insertion in model container [2018-09-19 16:17:10,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,299 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:17:10,522 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:17:10,544 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:17:10,563 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:17:10,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10 WrapperNode [2018-09-19 16:17:10,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:17:10,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:17:10,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:17:10,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:17:10,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (1/1) ... [2018-09-19 16:17:10,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:17:10,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:17:10,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:17:10,708 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:17:10,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (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 16:17:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:17:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 16:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:17:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 16:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:17:11,114 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:17:11,171 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:17:11,409 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:17:11,502 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:17:11,516 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:17:11,546 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:17:11,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:17:11 BoogieIcfgContainer [2018-09-19 16:17:11,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:17:11,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:17:11,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:17:11,552 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:17:11,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:17:10" (1/3) ... [2018-09-19 16:17:11,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9591ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:17:11, skipping insertion in model container [2018-09-19 16:17:11,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:17:10" (2/3) ... [2018-09-19 16:17:11,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9591ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:17:11, skipping insertion in model container [2018-09-19 16:17:11,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:17:11" (3/3) ... [2018-09-19 16:17:11,556 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011b_true-unreach-call.c [2018-09-19 16:17:11,567 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:17:11,575 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:17:11,626 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:17:11,627 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:17:11,627 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:17:11,628 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:17:11,628 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:17:11,628 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:17:11,628 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:17:11,629 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:17:11,629 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:17:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-19 16:17:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 16:17:11,656 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:17:11,657 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:17:11,660 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:17:11,666 INFO L82 PathProgramCache]: Analyzing trace with hash 288554348, now seen corresponding path program 1 times [2018-09-19 16:17:11,670 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:17:11,671 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 16:17:11,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:17:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:17:11,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:17:11,769 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 16:17:11,770 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:17:11,782 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:17:11,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:17:11,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:17:11,804 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:17:11,805 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:17:11,808 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-19 16:17:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:17:11,837 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2018-09-19 16:17:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:17:11,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-19 16:17:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:17:11,848 INFO L225 Difference]: With dead ends: 108 [2018-09-19 16:17:11,848 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:17:11,853 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 16:17:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:17:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-19 16:17:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-19 16:17:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-19 16:17:11,901 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 17 [2018-09-19 16:17:11,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:17:11,901 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-19 16:17:11,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:17:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-19 16:17:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:17:11,903 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:17:11,903 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 16:17:11,904 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:17:11,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1982009839, now seen corresponding path program 1 times [2018-09-19 16:17:11,905 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:17:11,905 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:17:11,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:17:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:17:12,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:17:12,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:17:12,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:17:12,224 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,259 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:12,378 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:17:12,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:17:12,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:17:12,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,494 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,543 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:12,544 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:17:12,780 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-09-19 16:17:12,796 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-09-19 16:17:12,796 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,823 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:12,959 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:12,960 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2018-09-19 16:17:13,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-09-19 16:17:13,175 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:17:13,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-09-19 16:17:13,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:13,223 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:13,300 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:13,300 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-09-19 16:17:13,490 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 50 [2018-09-19 16:17:13,501 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:17:13,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2018-09-19 16:17:13,509 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:13,525 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:13,559 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:13,560 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:84, output treesize:46 [2018-09-19 16:17:14,258 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 16:17:14,259 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:17:14,276 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:17:14,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:17:14,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:17:14,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:17:14,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:17:14,280 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 14 states. [2018-09-19 16:17:15,694 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-09-19 16:17:16,007 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-09-19 16:17:16,423 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-09-19 16:17:17,019 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-19 16:17:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:17:18,446 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2018-09-19 16:17:18,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 16:17:18,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2018-09-19 16:17:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:17:18,450 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:17:18,450 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:17:18,453 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2018-09-19 16:17:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:17:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-19 16:17:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-19 16:17:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2018-09-19 16:17:18,464 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 37 [2018-09-19 16:17:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:17:18,464 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2018-09-19 16:17:18,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:17:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2018-09-19 16:17:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-19 16:17:18,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:17:18,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:17:18,467 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:17:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1033820330, now seen corresponding path program 1 times [2018-09-19 16:17:18,468 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:17:18,469 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 16:17:18,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:17:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:17:18,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:17:18,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:17:18,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:17:18,621 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,636 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,653 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:18,654 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:17:18,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:17:18,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:17:18,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,718 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,739 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:18,740 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:17:18,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-19 16:17:18,853 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-09-19 16:17:18,853 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,858 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:18,876 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:18,876 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2018-09-19 16:17:18,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2018-09-19 16:17:18,998 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:17:19,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2018-09-19 16:17:19,006 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:19,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:19,047 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:19,047 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:67, output treesize:34 [2018-09-19 16:17:19,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:17:19,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:17:19,733 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:19,737 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:19,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:19,754 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:17:19,978 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:17:19,983 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:17:19,983 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:19,986 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:19,996 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:17:19,997 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:17:20,651 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 16:17:20,652 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:17:20,668 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:17:20,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-09-19 16:17:20,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-19 16:17:20,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-19 16:17:20,670 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:17:20,670 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand 20 states. [2018-09-19 16:17:23,374 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 16:17:25,726 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:17:26,331 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:17:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:17:29,444 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2018-09-19 16:17:29,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-19 16:17:29,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-09-19 16:17:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:17:29,446 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:17:29,446 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:17:29,448 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2018-09-19 16:17:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:17:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:17:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:17:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:17:29,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2018-09-19 16:17:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:17:29,449 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:17:29,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-19 16:17:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:17:29,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:17:29,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:17:29,624 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:17:29,655 INFO L426 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-09-19 16:17:29,655 INFO L426 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-09-19 16:17:29,655 INFO L426 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point L33-3(line 33) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point L27-1(lines 27 31) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point fabs_doubleEXIT(lines 25 39) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L422 ceAbstractionStarter]: At program point L27-3(lines 27 31) the Hoare annotation is: (= |fabs_double_#in~x| fabs_double_~x) [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2018-09-19 16:17:29,656 INFO L426 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L36-2(line 36) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L36-3(line 36) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L32(lines 32 37) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L32-2(lines 25 39) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L32-3(lines 32 37) no Hoare annotation was computed. [2018-09-19 16:17:29,657 INFO L426 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point L30-2(line 30) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point L28-2(line 28) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point L28-3(line 28) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L429 ceAbstractionStarter]: At program point fabs_doubleENTRY(lines 25 39) the Hoare annotation is: true [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point fabs_doubleFINAL(lines 25 39) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:17:29,658 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 14 24) no Hoare annotation was computed. [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 14 24) no Hoare annotation was computed. [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-09-19 16:17:29,659 INFO L426 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-09-19 16:17:29,660 INFO L426 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2018-09-19 16:17:29,661 INFO L422 ceAbstractionStarter]: At program point L17-3(lines 17 21) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-09-19 16:17:29,661 INFO L426 ceAbstractionStarter]: For program point L17-4(lines 17 21) no Hoare annotation was computed. [2018-09-19 16:17:29,661 INFO L429 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 14 24) the Hoare annotation is: true [2018-09-19 16:17:29,661 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:17:29,661 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:17:29,661 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:17:29,662 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:17:29,662 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 41 57) the Hoare annotation is: true [2018-09-19 16:17:29,662 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 41 57) no Hoare annotation was computed. [2018-09-19 16:17:29,662 INFO L426 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-09-19 16:17:29,662 INFO L426 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-09-19 16:17:29,663 INFO L422 ceAbstractionStarter]: At program point L51-1(line 51) the Hoare annotation is: (and |main_#t~short8| (exists ((v_arrayElimCell_10 (_ BitVec 32)) (|v_q#valueAsBitvector_8| (_ BitVec 64))) (and (= (fp.neg (_ +zero 11 53)) (fp ((_ extract 63 63) |v_q#valueAsBitvector_8|) ((_ extract 62 52) |v_q#valueAsBitvector_8|) ((_ extract 51 0) |v_q#valueAsBitvector_8|))) (= (let ((.cse0 (concat (bvand ((_ extract 63 32) |v_q#valueAsBitvector_8|) (_ bv2147483647 32)) v_arrayElimCell_10))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) main_~res~0))) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-09-19 16:17:29,663 INFO L426 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-09-19 16:17:29,663 INFO L422 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (= main_~x~0 (fp.neg (_ +zero 11 53))) [2018-09-19 16:17:29,663 INFO L426 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2018-09-19 16:17:29,663 INFO L426 ceAbstractionStarter]: For program point L51-4(lines 51 54) no Hoare annotation was computed. [2018-09-19 16:17:29,664 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 41 57) no Hoare annotation was computed. [2018-09-19 16:17:29,664 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2018-09-19 16:17:29,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:17:29 BoogieIcfgContainer [2018-09-19 16:17:29,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:17:29,678 INFO L168 Benchmark]: Toolchain (without parser) took 19411.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -372.7 MB). Peak memory consumption was 390.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:17:29,679 INFO L168 Benchmark]: CDTParser took 0.24 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 16:17:29,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.15 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 16:17:29,681 INFO L168 Benchmark]: Boogie Preprocessor took 83.00 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 16:17:29,681 INFO L168 Benchmark]: RCFGBuilder took 840.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:17:29,682 INFO L168 Benchmark]: TraceAbstraction took 18128.81 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: 414.3 MB). Peak memory consumption was 414.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:17:29,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.15 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 83.00 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 840.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18128.81 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: 414.3 MB). Peak memory consumption was 414.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 27]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. SAFE Result, 18.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 13.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 126 SDtfs, 72 SDslu, 789 SDs, 0 SdLazy, 545 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 58 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 104 ConstructedInterpolants, 58 QuantifiedInterpolants, 76604 SizeOfPredicates, 33 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...