/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:10,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:10,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:10,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:10,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:10,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:10,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:10,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:10,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:10,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:10,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:10,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:10,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:10,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:10,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:10,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:10,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:10,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:10,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:10,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:10,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:10,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:10,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:10,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:10,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:10,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:10,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:10,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:10,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:10,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:10,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:10,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:10,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:10,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:10,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:10,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:10,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:10,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:10,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:10,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:10,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:10,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:44:10,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:10,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:10,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:10,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:10,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:10,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:10,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:10,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:10,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:10,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:10,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:10,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:10,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:10,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:10,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:10,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:10,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:10,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:10,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:10,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:10,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:10,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:10,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:10,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:10,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:10,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:10,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:10,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:10,351 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:10,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:10,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:10,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:10,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:10,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:10,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662b.c [2020-10-27 19:44:10,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11be0253d/f5e53e3735774ceaa8418618d186742b/FLAGde2e45088 [2020-10-27 19:44:11,536 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:11,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0662b.c [2020-10-27 19:44:11,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11be0253d/f5e53e3735774ceaa8418618d186742b/FLAGde2e45088 [2020-10-27 19:44:11,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11be0253d/f5e53e3735774ceaa8418618d186742b [2020-10-27 19:44:11,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:11,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:11,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:11,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:11,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:11,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:11" (1/1) ... [2020-10-27 19:44:11,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378004d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:11, skipping insertion in model container [2020-10-27 19:44:11,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:11" (1/1) ... [2020-10-27 19:44:11,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:11,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:12,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:12,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:12,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:12,231 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:12,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12 WrapperNode [2020-10-27 19:44:12,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:12,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:12,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:12,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:12,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... [2020-10-27 19:44:12,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:12,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:12,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:12,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:12,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 19:44:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 19:44:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 19:44:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 19:44:12,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:13,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:13,351 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 19:44:13,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:13 BoogieIcfgContainer [2020-10-27 19:44:13,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:13,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:13,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:13,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:13,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:11" (1/3) ... [2020-10-27 19:44:13,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1ef9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:13, skipping insertion in model container [2020-10-27 19:44:13,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:12" (2/3) ... [2020-10-27 19:44:13,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1ef9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:13, skipping insertion in model container [2020-10-27 19:44:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:13" (3/3) ... [2020-10-27 19:44:13,364 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0662b.c [2020-10-27 19:44:13,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:13,382 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:13,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:13,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:13,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:13,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:13,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:13,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:13,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:13,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:13,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-27 19:44:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:44:13,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:13,481 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] [2020-10-27 19:44:13,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-27 19:44:13,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:13,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136807477] [2020-10-27 19:44:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:44:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 19:44:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:44:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 19:44:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:14,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:44:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:14,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:14,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:44:14,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:44:14,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:44:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:44:14,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136807477] [2020-10-27 19:44:14,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:14,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:14,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957962059] [2020-10-27 19:44:14,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:14,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:14,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:14,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:14,383 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-27 19:44:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:14,826 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-27 19:44:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:14,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 19:44:14,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:14,839 INFO L225 Difference]: With dead ends: 201 [2020-10-27 19:44:14,840 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 19:44:14,844 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 [2020-10-27 19:44:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 19:44:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-27 19:44:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 19:44:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-27 19:44:14,902 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-27 19:44:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:14,902 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-27 19:44:14,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-27 19:44:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:44:14,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:14,904 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] [2020-10-27 19:44:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:14,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-27 19:44:14,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:14,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815829038] [2020-10-27 19:44:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:14,972 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:14,972 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:14,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:14,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:14 BoogieIcfgContainer [2020-10-27 19:44:14,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:15,004 INFO L168 Benchmark]: Toolchain (without parser) took 3153.58 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 59.8 MB in the end (delta: 66.6 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:15,005 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:15,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 112.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:15,008 INFO L168 Benchmark]: Boogie Preprocessor took 86.94 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 109.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:15,009 INFO L168 Benchmark]: RCFGBuilder took 1032.45 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 105.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:15,009 INFO L168 Benchmark]: TraceAbstraction took 1642.99 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 59.8 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:15,013 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 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 112.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.94 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 109.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1032.45 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 105.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1642.99 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 59.8 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.5 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 231, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L218] float x = 0.0f; [L219] float y = __VERIFIER_nondet_float(); [L226] COND TRUE y < 0.0f [L228] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L228] RET, EXPR __ieee754_atan2f(y, x) [L228] float res = __ieee754_atan2f(y, x); [L231] COND TRUE res != -pi_o_2 [L232] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0662b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 18 SDslu, 123 SDs, 0 SdLazy, 135 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=105occurred 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, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...