/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/float_req_bl_1211b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 12:03:28,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 12:03:28,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 12:03:28,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 12:03:28,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 12:03:28,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 12:03:28,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 12:03:28,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 12:03:28,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 12:03:28,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 12:03:28,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 12:03:28,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 12:03:28,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 12:03:28,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 12:03:28,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 12:03:28,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 12:03:28,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 12:03:28,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 12:03:28,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 12:03:28,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 12:03:28,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 12:03:28,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 12:03:28,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 12:03:28,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 12:03:28,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 12:03:28,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 12:03:28,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 12:03:28,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 12:03:28,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 12:03:28,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 12:03:28,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 12:03:28,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 12:03:28,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 12:03:28,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 12:03:28,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 12:03:28,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 12:03:28,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 12:03:28,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 12:03:28,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 12:03:28,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 12:03:28,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 12:03:28,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 12:03:28,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 12:03:28,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 12:03:28,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 12:03:28,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 12:03:28,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 12:03:28,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 12:03:28,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 12:03:28,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 12:03:28,246 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 12:03:28,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 12:03:28,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 12:03:28,247 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 12:03:28,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 12:03:28,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 12:03:28,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 12:03:28,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 12:03:28,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 12:03:28,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 12:03:28,249 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 12:03:28,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 12:03:28,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 12:03:28,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 12:03:28,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 12:03:28,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 12:03:28,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 12:03:28,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 12:03:28,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:03:28,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 12:03:28,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 12:03:28,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 12:03:28,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 12:03:28,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 12:03:28,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 12:03:28,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 12:03:28,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 12:03:28,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 12:03:28,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 12:03:28,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 12:03:28,682 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 12:03:28,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1211b.c [2022-10-16 12:03:28,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85334db42/60d0baa566c440b1978571a04d018458/FLAG9d5de03e9 [2022-10-16 12:03:29,480 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 12:03:29,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1211b.c [2022-10-16 12:03:29,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85334db42/60d0baa566c440b1978571a04d018458/FLAG9d5de03e9 [2022-10-16 12:03:29,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85334db42/60d0baa566c440b1978571a04d018458 [2022-10-16 12:03:29,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 12:03:29,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 12:03:29,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 12:03:29,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 12:03:29,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 12:03:29,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:03:29" (1/1) ... [2022-10-16 12:03:29,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d58bc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:29, skipping insertion in model container [2022-10-16 12:03:29,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:03:29" (1/1) ... [2022-10-16 12:03:29,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 12:03:29,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 12:03:29,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1211b.c[2579,2592] [2022-10-16 12:03:29,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:03:29,944 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 12:03:30,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1211b.c[2579,2592] [2022-10-16 12:03:30,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:03:30,041 INFO L208 MainTranslator]: Completed translation [2022-10-16 12:03:30,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30 WrapperNode [2022-10-16 12:03:30,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 12:03:30,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 12:03:30,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 12:03:30,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 12:03:30,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,140 INFO L138 Inliner]: procedures = 19, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 185 [2022-10-16 12:03:30,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 12:03:30,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 12:03:30,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 12:03:30,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 12:03:30,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 12:03:30,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 12:03:30,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 12:03:30,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 12:03:30,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (1/1) ... [2022-10-16 12:03:30,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:03:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:03:30,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 12:03:30,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 12:03:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 12:03:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 12:03:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 12:03:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-16 12:03:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 12:03:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-16 12:03:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 12:03:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 12:03:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-16 12:03:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 12:03:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 12:03:30,453 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 12:03:30,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 12:03:31,053 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 12:03:31,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 12:03:31,061 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-10-16 12:03:31,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:03:31 BoogieIcfgContainer [2022-10-16 12:03:31,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 12:03:31,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 12:03:31,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 12:03:31,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 12:03:31,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:03:29" (1/3) ... [2022-10-16 12:03:31,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416feba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:03:31, skipping insertion in model container [2022-10-16 12:03:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:30" (2/3) ... [2022-10-16 12:03:31,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416feba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:03:31, skipping insertion in model container [2022-10-16 12:03:31,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:03:31" (3/3) ... [2022-10-16 12:03:31,076 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211b.c [2022-10-16 12:03:31,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 12:03:31,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 12:03:31,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 12:03:31,180 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@487d147a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 12:03:31,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 12:03:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 12:03:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 12:03:31,193 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:03:31,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 12:03:31,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 12:03:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:03:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 925861, now seen corresponding path program 1 times [2022-10-16 12:03:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:03:31,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3648284] [2022-10-16 12:03:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:03:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:03:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:03:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:03:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:03:31,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3648284] [2022-10-16 12:03:31,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3648284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:03:31,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:03:31,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 12:03:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626795626] [2022-10-16 12:03:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:03:31,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 12:03:31,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:03:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 12:03:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 12:03:31,522 INFO L87 Difference]: Start difference. First operand has 43 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 12:03:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:03:31,547 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2022-10-16 12:03:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 12:03:31,549 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 12:03:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:03:31,558 INFO L225 Difference]: With dead ends: 84 [2022-10-16 12:03:31,559 INFO L226 Difference]: Without dead ends: 8 [2022-10-16 12:03:31,563 INFO L412 NwaCegarLoop]: 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 [2022-10-16 12:03:31,568 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:03:31,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:03:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-10-16 12:03:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-10-16 12:03:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 12:03:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-10-16 12:03:31,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2022-10-16 12:03:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:03:31,607 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-10-16 12:03:31,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 12:03:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-10-16 12:03:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 12:03:31,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:03:31,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 12:03:31,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 12:03:31,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 12:03:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:03:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 28694824, now seen corresponding path program 1 times [2022-10-16 12:03:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:03:31,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000037672] [2022-10-16 12:03:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:03:31,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:03:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 12:03:31,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-16 12:03:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 12:03:31,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-16 12:03:31,760 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-16 12:03:31,762 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-10-16 12:03:31,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-10-16 12:03:31,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 12:03:31,770 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-16 12:03:31,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 12:03:31,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:03:31 BoogieIcfgContainer [2022-10-16 12:03:31,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 12:03:31,803 INFO L158 Benchmark]: Toolchain (without parser) took 2283.41ms. Allocated memory is still 162.5MB. Free memory was 138.1MB in the beginning and 127.8MB in the end (delta: 10.3MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2022-10-16 12:03:31,804 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 162.5MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 83.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 12:03:31,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.01ms. Allocated memory is still 162.5MB. Free memory was 137.9MB in the beginning and 126.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 12:03:31,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.21ms. Allocated memory is still 162.5MB. Free memory was 126.5MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-10-16 12:03:31,807 INFO L158 Benchmark]: Boogie Preprocessor took 90.61ms. Allocated memory is still 162.5MB. Free memory was 124.5MB in the beginning and 122.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-16 12:03:31,808 INFO L158 Benchmark]: RCFGBuilder took 828.91ms. Allocated memory is still 162.5MB. Free memory was 122.6MB in the beginning and 103.9MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-10-16 12:03:31,808 INFO L158 Benchmark]: TraceAbstraction took 735.22ms. Allocated memory is still 162.5MB. Free memory was 103.1MB in the beginning and 127.8MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 12:03:31,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 162.5MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 83.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 514.01ms. Allocated memory is still 162.5MB. Free memory was 137.9MB in the beginning and 126.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 97.21ms. Allocated memory is still 162.5MB. Free memory was 126.5MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.61ms. Allocated memory is still 162.5MB. Free memory was 124.5MB in the beginning and 122.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 828.91ms. Allocated memory is still 162.5MB. Free memory was 122.6MB in the beginning and 103.9MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 735.22ms. Allocated memory is still 162.5MB. Free memory was 103.1MB in the beginning and 127.8MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 106, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float one_modf = 1.0; VAL [one_modf=1] [L106] float x = -1.0f / 0.0f; [L107] float iptr = __VERIFIER_nondet_float(); [L108] CALL modf_float(x, &iptr) [L17] __int32_t i0, j0; [L18] __uint32_t i; VAL [\old(x)=4286578697, iptr={6:0}, iptr={6:0}, one_modf=1, x=4286578697] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=4286578697, i0=-8388608, iptr={6:0}, iptr={6:0}, one_modf=1, x=4286578697] - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 47 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=43occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 [2022-10-16 12:03:31,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...