/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_0730b.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-06 21:57:43,246 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-06 21:57:43,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-06 21:57:43,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-06 21:57:43,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-06 21:57:43,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-06 21:57:43,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-06 21:57:43,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-06 21:57:43,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-06 21:57:43,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-06 21:57:43,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-11-06 21:57:43,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-06 21:57:43,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-06 21:57:43,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-06 21:57:43,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-06 21:57:43,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-06 21:57:43,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-06 21:57:43,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-06 21:57:43,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-06 21:57:43,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-06 21:57:43,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-06 21:57:43,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-06 21:57:43,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-06 21:57:43,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-06 21:57:43,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-06 21:57:43,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-06 21:57:43,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-06 21:57:43,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-11-06 21:57:43,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-11-06 21:57:43,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-11-06 21:57:43,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-06 21:57:43,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-06 21:57:43,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-11-06 21:57:43,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-11-06 21:57:43,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-11-06 21:57:43,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-11-06 21:57:43,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-11-06 21:57:43,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-11-06 21:57:43,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-11-06 21:57:43,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-11-06 21:57:43,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-06 21:57:43,355 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
[2020-11-06 21:57:43,412 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-06 21:57:43,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-06 21:57:43,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-06 21:57:43,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-11-06 21:57:43,418 INFO L138 SettingsManager]: * Use SBE=true
[2020-11-06 21:57:43,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-06 21:57:43,419 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-06 21:57:43,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-06 21:57:43,419 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-06 21:57:43,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-06 21:57:43,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-06 21:57:43,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-06 21:57:43,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-06 21:57:43,422 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-06 21:57:43,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-06 21:57:43,422 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-06 21:57:43,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-06 21:57:43,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-06 21:57:43,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-11-06 21:57:43,423 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-06 21:57:43,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-06 21:57:43,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 21:57:43,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-06 21:57:43,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-11-06 21:57:43,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-06 21:57:43,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-11-06 21:57:43,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-06 21:57:43,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-06 21:57:43,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-11-06 21:57:43,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-06 21:57:43,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-06 21:57:43,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-06 21:57:43,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-06 21:57:43,901 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-06 21:57:43,901 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-06 21:57:43,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730b.c
[2020-11-06 21:57:43,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4795de8/365dc98b60f14e5c959ce04a67d00930/FLAG7aea217f7
[2020-11-06 21:57:44,606 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-06 21:57:44,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730b.c
[2020-11-06 21:57:44,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4795de8/365dc98b60f14e5c959ce04a67d00930/FLAG7aea217f7
[2020-11-06 21:57:44,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4795de8/365dc98b60f14e5c959ce04a67d00930
[2020-11-06 21:57:44,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-06 21:57:44,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-06 21:57:44,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-06 21:57:44,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-06 21:57:44,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-06 21:57:44,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:44" (1/1) ...
[2020-11-06 21:57:45,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d44777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:44, skipping insertion in model container
[2020-11-06 21:57:45,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:44" (1/1) ...
[2020-11-06 21:57:45,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-06 21:57:45,037 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-06 21:57:45,221 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 21:57:45,234 INFO L203 MainTranslator]: Completed pre-run
[2020-11-06 21:57:45,279 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 21:57:45,295 INFO L208 MainTranslator]: Completed translation
[2020-11-06 21:57:45,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45 WrapperNode
[2020-11-06 21:57:45,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-06 21:57:45,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-06 21:57:45,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-06 21:57:45,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-06 21:57:45,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (1/1) ...
[2020-11-06 21:57:45,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-06 21:57:45,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-06 21:57:45,366 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-06 21:57:45,366 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-06 21:57:45,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (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
[2020-11-06 21:57:45,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-06 21:57:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-06 21:57:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-06 21:57:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf
[2020-11-06 21:57:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-11-06 21:57:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-06 21:57:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-06 21:57:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-06 21:57:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-06 21:57:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-06 21:57:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-11-06 21:57:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf
[2020-11-06 21:57:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-11-06 21:57:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-06 21:57:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-06 21:57:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-06 21:57:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-11-06 21:57:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-11-06 21:57:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-06 21:57:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-06 21:57:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-06 21:57:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-06 21:57:46,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-06 21:57:46,020 INFO L298 CfgBuilder]: Removed 8 assume(true) statements.
[2020-11-06 21:57:46,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:46 BoogieIcfgContainer
[2020-11-06 21:57:46,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-06 21:57:46,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-06 21:57:46,025 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-06 21:57:46,028 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-06 21:57:46,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:44" (1/3) ...
[2020-11-06 21:57:46,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30107b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:46, skipping insertion in model container
[2020-11-06 21:57:46,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45" (2/3) ...
[2020-11-06 21:57:46,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30107b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:46, skipping insertion in model container
[2020-11-06 21:57:46,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:46" (3/3) ...
[2020-11-06 21:57:46,032 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c
[2020-11-06 21:57:46,049 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-11-06 21:57:46,053 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-06 21:57:46,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-06 21:57:46,096 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-06 21:57:46,096 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-06 21:57:46,096 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-11-06 21:57:46,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-06 21:57:46,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-06 21:57:46,097 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-06 21:57:46,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-06 21:57:46,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-06 21:57:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states.
[2020-11-06 21:57:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-11-06 21:57:46,123 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 21:57:46,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 21:57:46,124 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 21:57:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 21:57:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1829003849, now seen corresponding path program 1 times
[2020-11-06 21:57:46,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 21:57:46,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119841753]
[2020-11-06 21:57:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 21:57:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 21:57:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:46,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 21:57:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 21:57:46,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119841753]
[2020-11-06 21:57:46,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 21:57:46,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-06 21:57:46,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700511376]
[2020-11-06 21:57:46,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-06 21:57:46,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 21:57:46,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-06 21:57:46,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-06 21:57:46,452 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states.
[2020-11-06 21:57:46,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 21:57:46,694 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions.
[2020-11-06 21:57:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-11-06 21:57:46,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18
[2020-11-06 21:57:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 21:57:46,707 INFO L225 Difference]: With dead ends: 97
[2020-11-06 21:57:46,707 INFO L226 Difference]: Without dead ends: 47
[2020-11-06 21:57:46,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-06 21:57:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-11-06 21:57:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2020-11-06 21:57:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-11-06 21:57:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions.
[2020-11-06 21:57:46,764 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 18
[2020-11-06 21:57:46,765 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 21:57:46,765 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions.
[2020-11-06 21:57:46,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-06 21:57:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions.
[2020-11-06 21:57:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-11-06 21:57:46,767 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 21:57:46,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 21:57:46,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-06 21:57:46,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 21:57:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 21:57:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash -233399702, now seen corresponding path program 1 times
[2020-11-06 21:57:46,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 21:57:46,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130327192]
[2020-11-06 21:57:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 21:57:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 21:57:46,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 21:57:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 21:57:46,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 21:57:46,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-06 21:57:46,971 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-11-06 21:57:46,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-06 21:57:47,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:47 BoogieIcfgContainer
[2020-11-06 21:57:47,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-06 21:57:47,042 INFO L168 Benchmark]: Toolchain (without parser) took 2057.98 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 72.5 MB in the end (delta: 53.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,042 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,046 INFO L168 Benchmark]: Boogie Preprocessor took 68.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,047 INFO L168 Benchmark]: RCFGBuilder took 656.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 127.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,049 INFO L168 Benchmark]: TraceAbstraction took 1012.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 72.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:47,060 INFO L339 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 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 304.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 68.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 656.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 127.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1012.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 72.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 107, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 29.
Possible FailurePath:
[L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30;
VAL [\old(one_sqrt)=2139095044, \old(tiny_sqrt)=2139095052, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000]
[L103] float x = 0.0f;
VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L104] CALL, EXPR __ieee754_sqrtf(x)
VAL [\old(x)=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000]
[L17] float z;
[L18] __uint32_t r, hx;
[L19] __int32_t ix, s, q, m, t, i;
VAL [\old(x)=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L22] ieee_float_shape_type gf_u;
[L23] gf_u.value = (x)
[L24] EXPR gf_u.word
[L24] (ix) = gf_u.word
[L26] hx = ix & 0x7fffffff
VAL [\old(x)=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L28] COND TRUE !((hx) < 0x7f800000L)
[L29] return x * x + x;
VAL [\old(x)=0, hx=2139095040, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L104] RET, EXPR __ieee754_sqrtf(x)
VAL [__ieee754_sqrtf(x)=2139095043, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L104] float res = __ieee754_sqrtf(x);
[L107] EXPR res == 0.0f && __signbit_float(res) == 0
VAL [one_sqrt=1, res=2139095043, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=0]
[L107] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L108] CALL reach_error()
VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000]
[L3] __assert_fail("0", "float_req_bl_0730b.c", 3, "reach_error")
VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 8 SDslu, 52 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1105 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...