java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:16,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:16,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:16,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:16,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:16,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:16,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:16,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:16,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:16,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:16,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:16,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:16,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:16,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:16,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:16,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:16,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:16,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:16,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:16,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:16,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:16,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:16,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:16,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:16,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:23:16,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:23:16,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:23:16,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:23:16,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:23:16,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:23:16,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:16,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:16,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:16,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:16,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:16,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:16,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:16,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:16,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:16,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:16,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:16,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 01:23:16,522 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:16,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:16,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:16,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:16,524 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:16,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:16,524 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:16,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:16,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:16,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:16,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:16,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:16,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:16,526 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:16,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:16,526 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:16,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:16,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:16,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:16,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:16,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:16,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:16,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:16,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:16,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:16,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:16,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:16,573 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:16,573 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:16,574 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2019-09-08 01:23:16,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0830bed2/0ce83ad720bd420994f7cb8753060995/FLAG713fa4f40 [2019-09-08 01:23:17,072 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:17,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2019-09-08 01:23:17,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0830bed2/0ce83ad720bd420994f7cb8753060995/FLAG713fa4f40 [2019-09-08 01:23:17,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0830bed2/0ce83ad720bd420994f7cb8753060995 [2019-09-08 01:23:17,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:17,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:17,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:17,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:17,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:17,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89f1d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17, skipping insertion in model container [2019-09-08 01:23:17,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,466 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:17,484 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:17,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:17,671 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:17,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:17,831 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:17,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17 WrapperNode [2019-09-08 01:23:17,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:17,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:17,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:17,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:17,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (1/1) ... [2019-09-08 01:23:17,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:17,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:17,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:17,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:17,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (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 [2019-09-08 01:23:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2019-09-08 01:23:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:18,251 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:18,251 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 01:23:18,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:18 BoogieIcfgContainer [2019-09-08 01:23:18,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:18,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:18,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:18,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:17" (1/3) ... [2019-09-08 01:23:18,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746d9541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:18, skipping insertion in model container [2019-09-08 01:23:18,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:17" (2/3) ... [2019-09-08 01:23:18,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746d9541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:18, skipping insertion in model container [2019-09-08 01:23:18,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:18" (3/3) ... [2019-09-08 01:23:18,265 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2019-09-08 01:23:18,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:18,285 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:18,301 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:18,330 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:18,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:18,330 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:18,331 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:18,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:18,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:18,331 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:18,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:18,331 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-09-08 01:23:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:23:18,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:18,353 INFO L399 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] [2019-09-08 01:23:18,355 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1659352855, now seen corresponding path program 1 times [2019-09-08 01:23:18,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:18,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:18,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:18,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:18,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:18,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:18,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:18,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:18,506 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-09-08 01:23:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:18,538 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2019-09-08 01:23:18,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:18,540 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-08 01:23:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:18,562 INFO L225 Difference]: With dead ends: 60 [2019-09-08 01:23:18,562 INFO L226 Difference]: Without dead ends: 30 [2019-09-08 01:23:18,568 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-08 01:23:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-09-08 01:23:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 01:23:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-09-08 01:23:18,638 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2019-09-08 01:23:18,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:18,639 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-09-08 01:23:18,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-09-08 01:23:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 01:23:18,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:18,642 INFO L399 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] [2019-09-08 01:23:18,643 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1719916348, now seen corresponding path program 1 times [2019-09-08 01:23:18,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:18,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:18,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:18,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:18,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:18,837 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:18,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:18 BoogieIcfgContainer [2019-09-08 01:23:18,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:18,864 INFO L168 Benchmark]: Toolchain (without parser) took 1413.85 ms. Allocated memory was 132.6 MB in the beginning and 201.9 MB in the end (delta: 69.2 MB). Free memory was 87.8 MB in the beginning and 134.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,865 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.41 ms. Allocated memory was 132.6 MB in the beginning and 201.9 MB in the end (delta: 69.2 MB). Free memory was 87.6 MB in the beginning and 178.7 MB in the end (delta: -91.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,867 INFO L168 Benchmark]: Boogie Preprocessor took 37.60 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 176.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,868 INFO L168 Benchmark]: RCFGBuilder took 382.48 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 159.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,869 INFO L168 Benchmark]: TraceAbstraction took 608.06 ms. Allocated memory is still 201.9 MB. Free memory was 159.4 MB in the beginning and 134.0 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:18,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.41 ms. Allocated memory was 132.6 MB in the beginning and 201.9 MB in the end (delta: 69.2 MB). Free memory was 87.6 MB in the beginning and 178.7 MB in the end (delta: -91.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.60 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 176.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.48 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 159.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 608.06 ms. Allocated memory is still 201.9 MB. Free memory was 159.4 MB in the beginning and 134.0 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 55, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L65] float x = 0.0f / 0.0f; [L66] CALL, EXPR round_float(x) VAL [\old(x)=10] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=10, x=10] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=10, exponent_less_127=128, w=7, x=10] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=10, exponent_less_127=128, w=7, x=10] [L40] COND TRUE exponent_less_127 == 128 [L42] return x + x; VAL [\old(x)=10, exponent_less_127=128, w=7, x=10] [L66] RET, EXPR round_float(x) VAL [round_float(x)=9, x=10] [L66] float res = round_float(x); [L69] CALL, EXPR isnan_float(res) VAL [\old(x)=9] [L55] return x != x; VAL [\old(x)=9, \result=0, x=9] [L69] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=9, x=10] [L69] COND TRUE !isnan_float(res) [L70] __VERIFIER_error() VAL [res=9, x=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...