/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:20,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:20,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:20,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:20,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:20,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:20,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:20,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:20,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:20,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:20,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:20,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:20,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:20,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:20,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:20,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:20,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:20,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:20,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:20,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:20,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:20,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:20,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:20,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:20,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:25:20,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:25:20,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:25:20,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:25:20,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:25:20,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:25:20,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:25:20,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:25:20,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:25:20,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:25:20,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:25:20,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:25:20,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:25:20,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:25:20,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:20,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:20,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:20,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:20,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:20,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:20,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:20,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:20,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:20,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:20,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:20,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:20,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:20,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:20,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:20,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:20,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:20,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:20,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:20,293 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:20,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:20,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:20,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:20,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:20,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:20,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:20,295 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:20,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:20,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:20,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:20,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:20,702 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:20,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-10-23 20:25:20,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac7fbbc5/da3062e9775b410eae8c35fcfc088aa3/FLAG738c7e37f [2020-10-23 20:25:21,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:21,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-10-23 20:25:21,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac7fbbc5/da3062e9775b410eae8c35fcfc088aa3/FLAG738c7e37f [2020-10-23 20:25:21,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac7fbbc5/da3062e9775b410eae8c35fcfc088aa3 [2020-10-23 20:25:21,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:21,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:21,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:21,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:21,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:21,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:21" (1/1) ... [2020-10-23 20:25:21,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6f9d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:21, skipping insertion in model container [2020-10-23 20:25:21,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:21" (1/1) ... [2020-10-23 20:25:21,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:21,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:22,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:22,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:22,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:22,296 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:22,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22 WrapperNode [2020-10-23 20:25:22,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:22,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:22,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:22,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:22,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:22,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:22,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:22,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:22,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (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 [2020-10-23 20:25:22,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:22,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:22,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:22,431 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-23 20:25:22,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-23 20:25:22,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-23 20:25:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:22,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:22,952 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:25:22,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:22 BoogieIcfgContainer [2020-10-23 20:25:22,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:22,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:22,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:22,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:22,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:21" (1/3) ... [2020-10-23 20:25:22,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b239d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:22, skipping insertion in model container [2020-10-23 20:25:22,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (2/3) ... [2020-10-23 20:25:22,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b239d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:22, skipping insertion in model container [2020-10-23 20:25:22,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:22" (3/3) ... [2020-10-23 20:25:22,965 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2020-10-23 20:25:22,979 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:22,985 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:23,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:23,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:23,029 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:23,029 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:23,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:23,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:23,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:23,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:23,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-23 20:25:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 20:25:23,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:23,060 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:23,061 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:23,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:23,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1610076482, now seen corresponding path program 1 times [2020-10-23 20:25:23,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:23,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088621180] [2020-10-23 20:25:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:23,164 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088621180] [2020-10-23 20:25:23,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:23,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:23,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895874894] [2020-10-23 20:25:23,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:23,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:23,486 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2020-10-23 20:25:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:24,058 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2020-10-23 20:25:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:24,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-23 20:25:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:24,072 INFO L225 Difference]: With dead ends: 177 [2020-10-23 20:25:24,072 INFO L226 Difference]: Without dead ends: 90 [2020-10-23 20:25:24,077 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 [2020-10-23 20:25:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-23 20:25:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-23 20:25:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-23 20:25:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-23 20:25:24,141 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2020-10-23 20:25:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:24,142 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-23 20:25:24,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-23 20:25:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 20:25:24,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:24,145 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:24,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:24,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:24,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1993668518, now seen corresponding path program 1 times [2020-10-23 20:25:24,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:24,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143893365] [2020-10-23 20:25:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:24,152 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:24,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:24,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:24,344 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:24,344 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:24,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:24 BoogieIcfgContainer [2020-10-23 20:25:24,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:24,368 INFO L168 Benchmark]: Toolchain (without parser) took 2470.61 ms. Allocated memory is still 154.1 MB. Free memory was 130.8 MB in the beginning and 55.9 MB in the end (delta: 74.9 MB). Peak memory consumption was 75.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:24,369 INFO L168 Benchmark]: CDTParser took 3.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 128.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:24,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.53 ms. Allocated memory is still 154.1 MB. Free memory was 130.1 MB in the beginning and 119.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:24,371 INFO L168 Benchmark]: Boogie Preprocessor took 50.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 117.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:24,372 INFO L168 Benchmark]: RCFGBuilder took 605.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 125.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:24,372 INFO L168 Benchmark]: TraceAbstraction took 1408.57 ms. Allocated memory is still 154.1 MB. Free memory was 125.6 MB in the beginning and 55.9 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:24,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 128.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.53 ms. Allocated memory is still 154.1 MB. Free memory was 130.1 MB in the beginning and 119.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 117.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 605.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 125.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1408.57 ms. Allocated memory is still 154.1 MB. Free memory was 125.6 MB in the beginning and 55.9 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.3 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 81, overapproximation of bitwiseAnd at line 23, overapproximation of someUnaryFLOAToperation at line 77, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L77] float x = -0.0f; [L78] CALL, EXPR floor_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L78] RET, EXPR floor_float(x) [L78] float res = floor_float(x); [L81] EXPR res == -0.0f && __signbit_float(res) == 1 [L81] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L82] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1052c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 19 SDslu, 72 SDs, 0 SdLazy, 114 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=100occurred 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: No data available, 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...