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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:34,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:34,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:34,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:34,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:34,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:34,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:34,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:34,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:34,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:34,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:34,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:34,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:34,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:34,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:34,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:34,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:34,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:34,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:34,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:34,253 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 01:23:34,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:34,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:34,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:34,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:34,269 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:34,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:34,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:34,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:34,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:34,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:34,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:34,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:34,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:34,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:34,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:34,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:34,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:34,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:34,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:34,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:34,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:34,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:34,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:34,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:34,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:34,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:34,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:34,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:34,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:34,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:34,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:34,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:34,327 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:34,327 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:34,328 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2019-09-08 01:23:34,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57ed4f70/201da7742a6046e9af83a0934d21854f/FLAGc8659b8c2 [2019-09-08 01:23:34,813 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:34,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2019-09-08 01:23:34,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57ed4f70/201da7742a6046e9af83a0934d21854f/FLAGc8659b8c2 [2019-09-08 01:23:35,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57ed4f70/201da7742a6046e9af83a0934d21854f [2019-09-08 01:23:35,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:35,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:35,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:35,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:35,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:35,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d76297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35, skipping insertion in model container [2019-09-08 01:23:35,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,199 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:35,218 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:35,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:35,421 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:35,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:35,552 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:35,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35 WrapperNode [2019-09-08 01:23:35,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:35,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:35,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:35,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:35,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (1/1) ... [2019-09-08 01:23:35,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:35,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:35,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:35,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:35,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (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 01:23:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2019-09-08 01:23:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2019-09-08 01:23:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:36,095 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:36,096 INFO L283 CfgBuilder]: Removed 14 assume(true) statements. [2019-09-08 01:23:36,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:36 BoogieIcfgContainer [2019-09-08 01:23:36,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:36,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:36,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:36,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:36,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:35" (1/3) ... [2019-09-08 01:23:36,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef77bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:36, skipping insertion in model container [2019-09-08 01:23:36,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:35" (2/3) ... [2019-09-08 01:23:36,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef77bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:36, skipping insertion in model container [2019-09-08 01:23:36,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:36" (3/3) ... [2019-09-08 01:23:36,105 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-09-08 01:23:36,114 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:36,122 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:36,138 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:36,163 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:36,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:36,164 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:36,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:36,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:36,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:36,164 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:36,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:36,165 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-09-08 01:23:36,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-08 01:23:36,187 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:36,188 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, 1, 1] [2019-09-08 01:23:36,190 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2019-09-08 01:23:36,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:36,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:36,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:36,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:36,331 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 01:23:36,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:36,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:36,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:36,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:36,355 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2019-09-08 01:23:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:36,386 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2019-09-08 01:23:36,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:36,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-08 01:23:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:36,401 INFO L225 Difference]: With dead ends: 88 [2019-09-08 01:23:36,401 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 01:23:36,410 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 01:23:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 01:23:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-09-08 01:23:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-08 01:23:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-09-08 01:23:36,478 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2019-09-08 01:23:36,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:36,479 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-09-08 01:23:36,479 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-09-08 01:23:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 01:23:36,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:36,486 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, 1, 1, 1, 1] [2019-09-08 01:23:36,487 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:36,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:36,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2019-09-08 01:23:36,488 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:36,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:36,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:36,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:36,650 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 01:23:36,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:36,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:23:36,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:23:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:23:36,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:23:36,656 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states. [2019-09-08 01:23:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:36,687 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-09-08 01:23:36,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:23:36,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-09-08 01:23:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:36,690 INFO L225 Difference]: With dead ends: 47 [2019-09-08 01:23:36,690 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 01:23:36,691 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:23:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 01:23:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-09-08 01:23:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-08 01:23:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-09-08 01:23:36,705 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2019-09-08 01:23:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:36,709 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-09-08 01:23:36,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:23:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-09-08 01:23:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-08 01:23:36,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:36,711 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:36,711 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:36,711 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times [2019-09-08 01:23:36,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:36,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:36,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:36,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:36,852 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:36,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:36 BoogieIcfgContainer [2019-09-08 01:23:36,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:36,908 INFO L168 Benchmark]: Toolchain (without parser) took 1724.97 ms. Allocated memory was 133.7 MB in the beginning and 201.9 MB in the end (delta: 68.2 MB). Free memory was 89.4 MB in the beginning and 114.8 MB in the end (delta: -25.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,909 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.45 ms. Allocated memory was 133.7 MB in the beginning and 201.9 MB in the end (delta: 68.2 MB). Free memory was 89.2 MB in the beginning and 178.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,911 INFO L168 Benchmark]: Boogie Preprocessor took 44.83 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 176.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,912 INFO L168 Benchmark]: RCFGBuilder took 499.01 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 152.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,913 INFO L168 Benchmark]: TraceAbstraction took 807.90 ms. Allocated memory is still 201.9 MB. Free memory was 152.3 MB in the beginning and 114.8 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:36,916 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 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.45 ms. Allocated memory was 133.7 MB in the beginning and 201.9 MB in the end (delta: 68.2 MB). Free memory was 89.2 MB in the beginning and 178.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.83 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 176.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.01 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 152.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 807.90 ms. Allocated memory is still 201.9 MB. Free memory was 152.3 MB in the beginning and 114.8 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=4294967302, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={-2:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=4294967301, iptr={-2:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=4294967301, iptr={-2:0}, iptr={-2:0}, one_modf=1, x=4294967301] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=4294967301, i0=2, iptr={-2:0}, iptr={-2:0}, one_modf=1, x=4294967301] [L22] COND TRUE j0 < 23 VAL [\old(x)=4294967301, i0=2, iptr={-2:0}, iptr={-2:0}, j0=-1, one_modf=1, x=4294967301] [L23] COND TRUE j0 < 0 VAL [\old(x)=4294967301, i0=2, iptr={-2:0}, iptr={-2:0}, j0=-1, one_modf=1, x=4294967301] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [\old(x)=4294967301, \result=4294967301, i0=2, iptr={-2:0}, iptr={-2:0}, j0=-1, one_modf=1, x=4294967301] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={-2:0}, modf_float(x, &iptr)=4294967301, one_modf=1, x=4294967301] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=4294967306, iptr={-2:0}, one_modf=1, res=4294967301, x=4294967301] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=4294967306, one_modf=1] [L73] return x != x; VAL [\old(x)=4294967306, \result=1, one_modf=1, x=4294967306] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=4294967306, iptr={-2:0}, isnan_float(iptr)=1, one_modf=1, res=4294967301, x=4294967301] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967306, iptr={-2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=4294967301, x=4294967301] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967301, one_modf=1] [L73] return x != x; VAL [\old(x)=4294967301, \result=0, one_modf=1, x=4294967301] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=4294967306, iptr={-2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967301, x=4294967301] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967306, iptr={-2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967301, x=4294967301] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={-2:0}, one_modf=1, res=4294967301, x=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...