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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:32,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:32,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:32,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:32,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:32,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:32,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:32,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:32,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:32,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:32,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:32,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:32,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:32,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:32,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:32,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:32,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:32,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:32,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:32,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:32,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:32,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:32,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:32,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:32,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:32,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:32,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:32,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:32,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:32,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:32,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:32,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:32,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:32,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:32,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:32,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:32,272 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 01:23:32,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:32,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:32,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:32,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:32,297 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:32,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:32,298 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:32,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:32,299 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:32,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:32,300 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:32,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:32,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:32,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:32,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:32,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:32,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:32,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:32,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:32,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:32,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:32,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:32,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:32,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:32,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:32,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:32,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:32,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:32,359 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:32,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2019-09-08 01:23:32,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2305204d4/e109cbfff4b84918b60a53fb8903cdc0/FLAG63640452a [2019-09-08 01:23:32,839 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:32,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2019-09-08 01:23:32,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2305204d4/e109cbfff4b84918b60a53fb8903cdc0/FLAG63640452a [2019-09-08 01:23:33,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2305204d4/e109cbfff4b84918b60a53fb8903cdc0 [2019-09-08 01:23:33,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:33,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:33,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:33,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:33,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:33,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1332b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33, skipping insertion in model container [2019-09-08 01:23:33,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,256 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:33,291 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:33,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:33,609 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:33,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:33,671 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:33,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33 WrapperNode [2019-09-08 01:23:33,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:33,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:33,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:33,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:33,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:33,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:33,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:33,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:33,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:33,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (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 01:23:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2019-09-08 01:23:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2019-09-08 01:23:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-08 01:23:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:34,234 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:34,234 INFO L283 CfgBuilder]: Removed 14 assume(true) statements. [2019-09-08 01:23:34,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:34 BoogieIcfgContainer [2019-09-08 01:23:34,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:34,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:34,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:34,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:34,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:33" (1/3) ... [2019-09-08 01:23:34,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a3574e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:34, skipping insertion in model container [2019-09-08 01:23:34,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:33" (2/3) ... [2019-09-08 01:23:34,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a3574e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:34, skipping insertion in model container [2019-09-08 01:23:34,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:34" (3/3) ... [2019-09-08 01:23:34,246 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2019-09-08 01:23:34,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:34,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:34,278 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:34,306 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:34,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:34,306 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:34,306 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:34,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:34,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:34,307 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:34,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:34,307 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-09-08 01:23:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 01:23:34,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:34,331 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:34,333 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2019-09-08 01:23:34,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:34,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:34,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:34,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:34,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:34,500 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 01:23:34,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:34,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:34,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:34,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:34,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:34,518 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-09-08 01:23:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:34,544 INFO L93 Difference]: Finished difference Result 113 states and 177 transitions. [2019-09-08 01:23:34,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:34,546 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-08 01:23:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:34,556 INFO L225 Difference]: With dead ends: 113 [2019-09-08 01:23:34,557 INFO L226 Difference]: Without dead ends: 56 [2019-09-08 01:23:34,560 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 01:23:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-09-08 01:23:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-09-08 01:23:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-09-08 01:23:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2019-09-08 01:23:34,599 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2019-09-08 01:23:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:34,599 INFO L475 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2019-09-08 01:23:34,599 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2019-09-08 01:23:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-08 01:23:34,601 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:34,601 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] [2019-09-08 01:23:34,601 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2019-09-08 01:23:34,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:34,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:34,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:34,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:34,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:34,798 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:34,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:34 BoogieIcfgContainer [2019-09-08 01:23:34,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:34,855 INFO L168 Benchmark]: Toolchain (without parser) took 1609.59 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.7 MB in the beginning and 114.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,856 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.8 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.72 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.5 MB in the beginning and 173.3 MB in the end (delta: -86.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,860 INFO L168 Benchmark]: Boogie Preprocessor took 55.02 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 170.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,861 INFO L168 Benchmark]: RCFGBuilder took 508.30 ms. Allocated memory is still 199.2 MB. Free memory was 170.8 MB in the beginning and 143.6 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,862 INFO L168 Benchmark]: TraceAbstraction took 614.37 ms. Allocated memory is still 199.2 MB. Free memory was 143.6 MB in the beginning and 114.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:34,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.8 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.72 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.5 MB in the beginning and 173.3 MB in the end (delta: -86.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.02 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 170.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.30 ms. Allocated memory is still 199.2 MB. Free memory was 170.8 MB in the beginning and 143.6 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 614.37 ms. Allocated memory is still 199.2 MB. Free memory was 143.6 MB in the beginning and 114.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967307, \old(Zero_fmod)=4294967301, one_fmod=1, Zero_fmod={-2:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967302, Zero_fmod={-2:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967302, one_fmod=1, Zero_fmod={-2:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967302, one_fmod=1, x=0, y=4294967302, Zero_fmod={-2:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967302, one_fmod=1, sx=-1, x=0, y=4294967302, Zero_fmod={-2:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967302, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967302, Zero_fmod={-2:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967303, one_fmod=1, x=0, y=4294967302, Zero_fmod={-2:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967303, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967302, Zero_fmod={-2:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=4294967303, x=0, y=4294967302, Zero_fmod={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 78 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=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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...