/usr/bin/java -ea -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_1011b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 11:59:03,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 11:59:03,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 11:59:03,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 11:59:03,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 11:59:03,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 11:59:03,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 11:59:03,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 11:59:03,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 11:59:03,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 11:59:03,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 11:59:03,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 11:59:03,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 11:59:03,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 11:59:03,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 11:59:03,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 11:59:03,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 11:59:03,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 11:59:03,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 11:59:03,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 11:59:03,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 11:59:03,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 11:59:03,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 11:59:03,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 11:59:03,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 11:59:03,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 11:59:03,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 11:59:03,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 11:59:03,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 11:59:03,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 11:59:03,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 11:59:03,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 11:59:03,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 11:59:03,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 11:59:03,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 11:59:03,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 11:59:03,178 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 [2020-07-08 11:59:03,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 11:59:03,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 11:59:03,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 11:59:03,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 11:59:03,216 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 11:59:03,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 11:59:03,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 11:59:03,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 11:59:03,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 11:59:03,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 11:59:03,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 11:59:03,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 11:59:03,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 11:59:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 11:59:03,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 11:59:03,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 11:59:03,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 11:59:03,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 11:59:03,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 11:59:03,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 11:59:03,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 11:59:03,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 11:59:03,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 11:59:03,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 11:59:03,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 11:59:03,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 11:59:03,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 11:59:03,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 11:59:03,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 11:59:03,493 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 11:59:03,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011b.c [2020-07-08 11:59:03,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7e45384/7cba99feb316455986bc4101e7aca326/FLAGc88193772 [2020-07-08 11:59:04,009 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 11:59:04,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1011b.c [2020-07-08 11:59:04,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7e45384/7cba99feb316455986bc4101e7aca326/FLAGc88193772 [2020-07-08 11:59:04,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7e45384/7cba99feb316455986bc4101e7aca326 [2020-07-08 11:59:04,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 11:59:04,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 11:59:04,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 11:59:04,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 11:59:04,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 11:59:04,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4bcabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04, skipping insertion in model container [2020-07-08 11:59:04,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 11:59:04,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 11:59:04,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 11:59:04,736 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 11:59:04,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 11:59:04,880 INFO L208 MainTranslator]: Completed translation [2020-07-08 11:59:04,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04 WrapperNode [2020-07-08 11:59:04,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 11:59:04,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 11:59:04,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 11:59:04,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 11:59:04,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (1/1) ... [2020-07-08 11:59:04,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 11:59:04,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 11:59:04,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 11:59:04,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 11:59:04,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (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 [2020-07-08 11:59:04,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 11:59:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 11:59:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-07-08 11:59:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-08 11:59:04,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 11:59:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 11:59:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-08 11:59:04,997 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-07-08 11:59:04,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 11:59:04,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-08 11:59:04,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 11:59:04,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 11:59:04,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 11:59:04,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-08 11:59:04,999 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-08 11:59:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 11:59:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 11:59:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 11:59:05,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 11:59:05,364 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-08 11:59:05,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:59:05 BoogieIcfgContainer [2020-07-08 11:59:05,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 11:59:05,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 11:59:05,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 11:59:05,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 11:59:05,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:59:04" (1/3) ... [2020-07-08 11:59:05,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:59:05, skipping insertion in model container [2020-07-08 11:59:05,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:59:04" (2/3) ... [2020-07-08 11:59:05,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:59:05, skipping insertion in model container [2020-07-08 11:59:05,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:59:05" (3/3) ... [2020-07-08 11:59:05,377 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b.c [2020-07-08 11:59:05,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 11:59:05,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 11:59:05,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 11:59:05,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 11:59:05,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 11:59:05,424 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 11:59:05,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 11:59:05,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 11:59:05,424 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 11:59:05,424 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 11:59:05,424 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 11:59:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-08 11:59:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-08 11:59:05,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 11:59:05,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 11:59:05,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 11:59:05,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 11:59:05,454 INFO L82 PathProgramCache]: Analyzing trace with hash -2014572178, now seen corresponding path program 1 times [2020-07-08 11:59:05,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 11:59:05,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452304884] [2020-07-08 11:59:05,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 11:59:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 11:59:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 11:59:05,668 INFO L280 TraceCheckUtils]: 0: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {35#true} is VALID [2020-07-08 11:59:05,668 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2020-07-08 11:59:05,669 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #69#return; {35#true} is VALID [2020-07-08 11:59:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 11:59:05,708 INFO L280 TraceCheckUtils]: 0: Hoare triple {47#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~ix~0; {35#true} is VALID [2020-07-08 11:59:05,709 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#true} assume !true; {36#false} is VALID [2020-07-08 11:59:05,709 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#false} assume !true; {36#false} is VALID [2020-07-08 11:59:05,710 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#false} #res := ~x; {36#false} is VALID [2020-07-08 11:59:05,710 INFO L280 TraceCheckUtils]: 4: Hoare triple {36#false} assume true; {36#false} is VALID [2020-07-08 11:59:05,710 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {36#false} {35#true} #65#return; {36#false} is VALID [2020-07-08 11:59:05,712 INFO L263 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 11:59:05,713 INFO L280 TraceCheckUtils]: 1: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {35#true} is VALID [2020-07-08 11:59:05,713 INFO L280 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2020-07-08 11:59:05,714 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #69#return; {35#true} is VALID [2020-07-08 11:59:05,714 INFO L263 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret9 := main(); {35#true} is VALID [2020-07-08 11:59:05,715 INFO L280 TraceCheckUtils]: 5: Hoare triple {35#true} ~x~0 := ~someUnaryFLOAToperation(0.0); {35#true} is VALID [2020-07-08 11:59:05,717 INFO L263 TraceCheckUtils]: 6: Hoare triple {35#true} call #t~ret6 := fabs_float(~x~0); {47#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-08 11:59:05,717 INFO L280 TraceCheckUtils]: 7: Hoare triple {47#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~ix~0; {35#true} is VALID [2020-07-08 11:59:05,718 INFO L280 TraceCheckUtils]: 8: Hoare triple {35#true} assume !true; {36#false} is VALID [2020-07-08 11:59:05,718 INFO L280 TraceCheckUtils]: 9: Hoare triple {36#false} assume !true; {36#false} is VALID [2020-07-08 11:59:05,719 INFO L280 TraceCheckUtils]: 10: Hoare triple {36#false} #res := ~x; {36#false} is VALID [2020-07-08 11:59:05,719 INFO L280 TraceCheckUtils]: 11: Hoare triple {36#false} assume true; {36#false} is VALID [2020-07-08 11:59:05,720 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {36#false} {35#true} #65#return; {36#false} is VALID [2020-07-08 11:59:05,720 INFO L280 TraceCheckUtils]: 13: Hoare triple {36#false} ~res~0 := #t~ret6;havoc #t~ret6;#t~short8 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); {36#false} is VALID [2020-07-08 11:59:05,720 INFO L280 TraceCheckUtils]: 14: Hoare triple {36#false} assume !#t~short8; {36#false} is VALID [2020-07-08 11:59:05,721 INFO L280 TraceCheckUtils]: 15: Hoare triple {36#false} assume !#t~short8;havoc #t~short8;havoc #t~ret7; {36#false} is VALID [2020-07-08 11:59:05,721 INFO L280 TraceCheckUtils]: 16: Hoare triple {36#false} assume !false; {36#false} is VALID [2020-07-08 11:59:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 11:59:05,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452304884] [2020-07-08 11:59:05,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 11:59:05,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-08 11:59:05,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020705377] [2020-07-08 11:59:05,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-08 11:59:05,737 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 11:59:05,740 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-08 11:59:05,792 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 11:59:05,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-08 11:59:05,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 11:59:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-08 11:59:05,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-08 11:59:05,805 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-07-08 11:59:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 11:59:06,144 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-08 11:59:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-08 11:59:06,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-08 11:59:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 11:59:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 11:59:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2020-07-08 11:59:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 11:59:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2020-07-08 11:59:06,168 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 71 transitions. [2020-07-08 11:59:06,273 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 11:59:06,284 INFO L225 Difference]: With dead ends: 56 [2020-07-08 11:59:06,284 INFO L226 Difference]: Without dead ends: 28 [2020-07-08 11:59:06,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-08 11:59:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-08 11:59:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-08 11:59:06,342 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 11:59:06,343 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 28 states. [2020-07-08 11:59:06,343 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2020-07-08 11:59:06,343 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2020-07-08 11:59:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 11:59:06,348 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-08 11:59:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-08 11:59:06,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 11:59:06,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 11:59:06,349 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2020-07-08 11:59:06,349 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2020-07-08 11:59:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 11:59:06,353 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-08 11:59:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-08 11:59:06,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 11:59:06,354 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 11:59:06,354 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 11:59:06,354 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 11:59:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-08 11:59:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-08 11:59:06,359 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-07-08 11:59:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 11:59:06,360 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-08 11:59:06,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-08 11:59:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-08 11:59:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-08 11:59:06,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 11:59:06,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 11:59:06,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 11:59:06,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 11:59:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 11:59:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash 516358161, now seen corresponding path program 1 times [2020-07-08 11:59:06,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 11:59:06,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299093557] [2020-07-08 11:59:06,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 11:59:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 11:59:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 11:59:06,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 11:59:06,505 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 11:59:06,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 11:59:06,532 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: fabs_floatENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: __signbit_floatENTRY has no Hoare annotation [2020-07-08 11:59:06,533 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-08 11:59:06,534 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-08 11:59:06,535 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L30-1 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L30-1 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-08 11:59:06,536 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: __signbit_floatFINAL has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: fabs_floatFINAL has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49-4 has no Hoare annotation [2020-07-08 11:59:06,537 WARN L170 areAnnotationChecker]: L49-4 has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: __signbit_floatEXIT has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: fabs_floatEXIT has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: L49-2 has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2020-07-08 11:59:06,538 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 11:59:06,539 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 11:59:06,539 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 11:59:06,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 11:59:06 BoogieIcfgContainer [2020-07-08 11:59:06,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 11:59:06,545 INFO L168 Benchmark]: Toolchain (without parser) took 2095.87 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 103.9 MB in the beginning and 169.0 MB in the end (delta: -65.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,546 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 181.7 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,547 INFO L168 Benchmark]: Boogie Preprocessor took 57.96 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,548 INFO L168 Benchmark]: RCFGBuilder took 429.64 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 155.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,549 INFO L168 Benchmark]: TraceAbstraction took 1171.15 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 155.0 MB in the beginning and 169.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-07-08 11:59:06,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 430.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 181.7 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.96 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.64 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 155.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1171.15 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 155.0 MB in the beginning and 169.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of someUnaryFLOAToperation at line 45, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = -0.0f; [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=9] [L13] __uint32_t ix; VAL [\old(x)=9, x=9] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=9, \result=8, ix=7, x=8] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=8, x=9] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=8, res == 0.0f && __signbit_float(res) == 0=0, x=9] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=8, x=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...