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/float_req_bl_1252b_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:36:41,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:36:41,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:36:41,535 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:36:41,536 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:36:41,537 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:36:41,538 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:36:41,540 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:36:41,541 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:36:41,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:36:41,545 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:36:41,545 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:36:41,546 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:36:41,549 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:36:41,551 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:36:41,552 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:36:41,553 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:36:41,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:36:41,561 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:36:41,566 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:36:41,569 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:36:41,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:36:41,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:36:41,574 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:36:41,574 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:36:41,575 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:36:41,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:36:41,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:36:41,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:36:41,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:36:41,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:36:41,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:36:41,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:36:41,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:36:41,585 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:36:41,586 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:36:41,587 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 16:36:41,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:36:41,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:36:41,623 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:36:41,623 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:36:41,624 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:36:41,626 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:36:41,627 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:36:41,627 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:36:41,627 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:36:41,627 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:36:41,628 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:36:41,628 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:36:41,628 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:36:41,628 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:36:41,628 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:36:41,629 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:36:41,629 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:36:41,629 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:36:41,629 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:36:41,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:36:41,631 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:36:41,631 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:36:41,631 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:36:41,631 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:36:41,632 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:36:41,632 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:36:41,632 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:36:41,632 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:36:41,632 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:36:41,633 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:36:41,633 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:36:41,633 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:36:41,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:36:41,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:36:41,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:36:41,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:36:41,715 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:36:41,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-19 16:36:42,073 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923fafa23/d1f7f9a5a7db4cf19f9fb7344fbe211b/FLAGd46e72d01 [2018-09-19 16:36:42,222 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:36:42,222 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-19 16:36:42,229 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923fafa23/d1f7f9a5a7db4cf19f9fb7344fbe211b/FLAGd46e72d01 [2018-09-19 16:36:42,244 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923fafa23/d1f7f9a5a7db4cf19f9fb7344fbe211b [2018-09-19 16:36:42,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:36:42,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:36:42,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:36:42,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:36:42,266 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:36:42,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7eb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42, skipping insertion in model container [2018-09-19 16:36:42,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,284 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:36:42,567 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:36:42,588 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:36:42,613 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:36:42,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42 WrapperNode [2018-09-19 16:36:42,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:36:42,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:36:42,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:36:42,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:36:42,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (1/1) ... [2018-09-19 16:36:42,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:36:42,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:36:42,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:36:42,744 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:36:42,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (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 16:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-19 16:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-19 16:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-19 16:36:42,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:36:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:36:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 16:36:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-19 16:36:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:36:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-19 16:36:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:36:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:36:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-19 16:36:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-19 16:36:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-19 16:36:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-19 16:36:43,317 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:36:43,343 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:36:43,412 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:36:43,423 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:36:43,435 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:36:43,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:36:43 BoogieIcfgContainer [2018-09-19 16:36:43,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:36:43,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:36:43,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:36:43,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:36:43,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:36:42" (1/3) ... [2018-09-19 16:36:43,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a496daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:36:43, skipping insertion in model container [2018-09-19 16:36:43,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:36:42" (2/3) ... [2018-09-19 16:36:43,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a496daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:36:43, skipping insertion in model container [2018-09-19 16:36:43,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:36:43" (3/3) ... [2018-09-19 16:36:43,444 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-09-19 16:36:43,455 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:36:43,463 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:36:43,508 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:36:43,509 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:36:43,509 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:36:43,510 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:36:43,510 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:36:43,510 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:36:43,510 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:36:43,511 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:36:43,511 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:36:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-19 16:36:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-19 16:36:43,541 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:43,542 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] [2018-09-19 16:36:43,545 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-09-19 16:36:43,556 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:43,557 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 16:36:43,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:43,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:43,681 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 16:36:43,682 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:43,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:43,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:36:43,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:36:43,713 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:36:43,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:36:43,717 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-19 16:36:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:43,747 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-09-19 16:36:43,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:36:43,749 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-19 16:36:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:43,760 INFO L225 Difference]: With dead ends: 107 [2018-09-19 16:36:43,760 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:36:43,765 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 16:36:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:36:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-19 16:36:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-19 16:36:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-19 16:36:43,816 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-19 16:36:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:43,817 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-19 16:36:43,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:36:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-19 16:36:43,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-19 16:36:43,823 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:43,823 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] [2018-09-19 16:36:43,824 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-09-19 16:36:43,825 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:43,825 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 16:36:43,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:43,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:43,984 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 16:36:43,984 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:43,998 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:43,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:44,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:44,000 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:44,003 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:44,003 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-19 16:36:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:44,134 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-09-19 16:36:44,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:44,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-19 16:36:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:44,138 INFO L225 Difference]: With dead ends: 80 [2018-09-19 16:36:44,139 INFO L226 Difference]: Without dead ends: 57 [2018-09-19 16:36:44,140 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 16:36:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-19 16:36:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-19 16:36:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-19 16:36:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-19 16:36:44,152 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-19 16:36:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:44,152 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-19 16:36:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-19 16:36:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-19 16:36:44,154 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:44,154 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] [2018-09-19 16:36:44,155 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-09-19 16:36:44,156 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:44,156 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 16:36:44,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:44,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:44,435 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 11 treesize of output 8 [2018-09-19 16:36:44,451 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 8 treesize of output 7 [2018-09-19 16:36:44,451 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,478 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,520 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,520 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:44,565 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 29 treesize of output 21 [2018-09-19 16:36:44,569 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 21 treesize of output 9 [2018-09-19 16:36:44,569 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,572 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,579 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:44,580 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:45,133 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 16:36:45,134 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:45,146 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:45,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:36:45,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:36:45,147 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:36:45,147 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:36:45,147 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-19 16:36:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:46,698 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-09-19 16:36:46,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:36:46,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-19 16:36:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:46,702 INFO L225 Difference]: With dead ends: 84 [2018-09-19 16:36:46,702 INFO L226 Difference]: Without dead ends: 56 [2018-09-19 16:36:46,703 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:36:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-19 16:36:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-19 16:36:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-19 16:36:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-19 16:36:46,713 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-19 16:36:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:46,713 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-19 16:36:46,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:36:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-19 16:36:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-19 16:36:46,715 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:46,715 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-19 16:36:46,716 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-09-19 16:36:46,717 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:46,717 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 16:36:46,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:46,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:36:46,831 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:46,847 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:46,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:46,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:46,848 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:46,848 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:46,849 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-19 16:36:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:46,879 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-09-19 16:36:46,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:46,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-19 16:36:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:46,881 INFO L225 Difference]: With dead ends: 80 [2018-09-19 16:36:46,882 INFO L226 Difference]: Without dead ends: 57 [2018-09-19 16:36:46,883 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 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 16:36:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-19 16:36:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-19 16:36:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-19 16:36:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-19 16:36:46,891 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-19 16:36:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:46,892 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-19 16:36:46,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-19 16:36:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-19 16:36:46,893 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:46,894 INFO L376 BasicCegarLoop]: trace histogram [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 16:36:46,894 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-09-19 16:36:46,895 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:46,895 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 16:36:46,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:46,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:47,014 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 11 treesize of output 8 [2018-09-19 16:36:47,022 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 8 treesize of output 7 [2018-09-19 16:36:47,023 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,026 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,040 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:47,062 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 29 treesize of output 21 [2018-09-19 16:36:47,069 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 21 treesize of output 9 [2018-09-19 16:36:47,069 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,100 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,105 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:47,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:36:47,262 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:47,278 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:47,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:36:47,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:36:47,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:36:47,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:36:47,279 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-19 16:36:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:48,690 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-09-19 16:36:48,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:36:48,691 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-19 16:36:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:48,693 INFO L225 Difference]: With dead ends: 82 [2018-09-19 16:36:48,693 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:36:48,695 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:36:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:36:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-19 16:36:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:36:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-19 16:36:48,702 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-19 16:36:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:48,703 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-19 16:36:48,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:36:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-19 16:36:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-19 16:36:48,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:48,705 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-19 16:36:48,705 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-09-19 16:36:48,706 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:48,706 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 16:36:48,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:48,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:36:48,879 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:48,890 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:48,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:36:48,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:36:48,891 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:36:48,891 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:36:48,891 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-09-19 16:36:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:49,121 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-09-19 16:36:49,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-19 16:36:49,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-19 16:36:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:49,123 INFO L225 Difference]: With dead ends: 59 [2018-09-19 16:36:49,123 INFO L226 Difference]: Without dead ends: 56 [2018-09-19 16:36:49,124 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:36:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-19 16:36:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-19 16:36:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-19 16:36:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-19 16:36:49,131 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-09-19 16:36:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:49,132 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-19 16:36:49,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:36:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-19 16:36:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-19 16:36:49,134 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:49,134 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-19 16:36:49,134 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:49,135 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-09-19 16:36:49,135 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:49,135 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 16:36:49,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:49,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:36:49,286 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:49,297 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:49,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:36:49,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:36:49,298 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:36:49,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:36:49,298 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-09-19 16:36:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:49,386 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-09-19 16:36:49,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:36:49,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-19 16:36:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:49,390 INFO L225 Difference]: With dead ends: 75 [2018-09-19 16:36:49,390 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:36:49,391 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:36:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:36:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-19 16:36:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:36:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-19 16:36:49,397 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-19 16:36:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:49,398 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-19 16:36:49,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:36:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-19 16:36:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-19 16:36:49,399 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:49,400 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:49,400 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-09-19 16:36:49,401 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:49,401 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 16:36:49,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-19 16:36:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-19 16:36:49,640 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 16:36:49,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:36:49 BoogieIcfgContainer [2018-09-19 16:36:49,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:36:49,738 INFO L168 Benchmark]: Toolchain (without parser) took 7482.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -478.8 MB). Peak memory consumption was 265.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:49,741 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 16:36:49,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.27 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 16:36:49,743 INFO L168 Benchmark]: Boogie Preprocessor took 77.06 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 16:36:49,743 INFO L168 Benchmark]: RCFGBuilder took 692.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -779.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:49,745 INFO L168 Benchmark]: TraceAbstraction took 6300.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 290.4 MB). Peak memory consumption was 290.4 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:49,750 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 407.27 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 77.06 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 692.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -779.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6300.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 290.4 MB). Peak memory consumption was 290.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] COND FALSE, EXPR !(x > y ? x : y) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] RET return x > y ? x : y; [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] COND TRUE, EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L59] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L60] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L60] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L60] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L61] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L63] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 6.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 382 SDtfs, 125 SDslu, 1266 SDs, 0 SdLazy, 433 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.9s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 28345 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...