/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=SHALLOWEST --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_0680a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:18,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:18,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:18,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:18,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:18,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:18,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:18,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:18,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:18,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:18,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:18,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:18,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:18,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:18,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:18,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:18,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:18,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:18,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:18,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:18,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:19,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:19,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:19,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:19,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:19,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:19,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:19,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:19,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:19,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:19,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:19,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:19,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:19,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:19,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:19,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:19,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:19,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:19,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:19,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:19,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:19,033 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 01:03:19,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:19,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:19,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:19,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:19,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:19,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:19,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:19,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:19,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:19,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:19,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:19,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:19,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:19,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:19,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:19,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:19,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:19,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:19,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:19,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:19,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:19,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:19,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:19,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:19,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:19,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:19,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:19,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:19,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:19,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:19,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:19,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:19,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:19,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:19,529 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:19,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-27 01:03:19,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d65a76d24/3c9e2edb9b8b4db2a3943681d4cdb76c/FLAG37140049f [2020-10-27 01:03:20,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:20,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-27 01:03:20,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d65a76d24/3c9e2edb9b8b4db2a3943681d4cdb76c/FLAG37140049f [2020-10-27 01:03:20,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d65a76d24/3c9e2edb9b8b4db2a3943681d4cdb76c [2020-10-27 01:03:20,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:20,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:20,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:20,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:20,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:20,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:20" (1/1) ... [2020-10-27 01:03:20,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd97ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:20, skipping insertion in model container [2020-10-27 01:03:20,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:20" (1/1) ... [2020-10-27 01:03:20,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:20,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:20,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:20,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:21,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:21,054 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:21,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21 WrapperNode [2020-10-27 01:03:21,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:21,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:21,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:21,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:21,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:21,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:21,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:21,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:21,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (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 01:03:21,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:03:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 01:03:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 01:03:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:03:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:03:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:22,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:22,198 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:03:22,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:22 BoogieIcfgContainer [2020-10-27 01:03:22,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:22,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:22,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:22,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:22,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:20" (1/3) ... [2020-10-27 01:03:22,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b410e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:22, skipping insertion in model container [2020-10-27 01:03:22,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (2/3) ... [2020-10-27 01:03:22,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b410e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:22, skipping insertion in model container [2020-10-27 01:03:22,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:22" (3/3) ... [2020-10-27 01:03:22,210 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2020-10-27 01:03:22,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:22,228 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:22,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:22,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:22,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:22,270 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:22,270 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:22,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:22,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:22,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:22,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-27 01:03:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:03:22,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:22,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:22,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:22,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2093410893, now seen corresponding path program 1 times [2020-10-27 01:03:22,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:22,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989288259] [2020-10-27 01:03:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:22,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:03:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 01:03:22,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:03:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:22,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:22,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:03:22,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:03:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:03:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:23,073 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 01:03:23,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989288259] [2020-10-27 01:03:23,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:23,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:23,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986850937] [2020-10-27 01:03:23,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:23,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:23,101 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-27 01:03:23,233 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:03:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:23,613 INFO L93 Difference]: Finished difference Result 195 states and 308 transitions. [2020-10-27 01:03:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:23,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 01:03:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:23,626 INFO L225 Difference]: With dead ends: 195 [2020-10-27 01:03:23,627 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 01:03:23,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 01:03:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 01:03:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 01:03:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-27 01:03:23,687 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-27 01:03:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:23,687 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-27 01:03:23,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-27 01:03:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:03:23,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:23,689 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] [2020-10-27 01:03:23,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:23,690 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:23,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:23,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2002604426, now seen corresponding path program 1 times [2020-10-27 01:03:23,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:23,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066861632] [2020-10-27 01:03:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:23,791 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:23,791 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:23,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:23,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:23 BoogieIcfgContainer [2020-10-27 01:03:23,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:23,825 INFO L168 Benchmark]: Toolchain (without parser) took 3167.55 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 138.5 MB in the beginning and 116.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:23,826 INFO L168 Benchmark]: CDTParser took 1.81 ms. Allocated memory is still 163.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:23,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.82 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 124.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:23,835 INFO L168 Benchmark]: Boogie Preprocessor took 87.35 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 121.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:23,836 INFO L168 Benchmark]: RCFGBuilder took 1056.53 ms. Allocated memory is still 163.6 MB. Free memory was 121.3 MB in the beginning and 118.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:23,838 INFO L168 Benchmark]: TraceAbstraction took 1618.26 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 118.1 MB in the beginning and 116.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:23,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.81 ms. Allocated memory is still 163.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 389.82 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 124.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.35 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 121.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1056.53 ms. Allocated memory is still 163.6 MB. Free memory was 121.3 MB in the beginning and 118.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1618.26 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 118.1 MB in the beginning and 116.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 34.4 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 227, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 222, 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; [L222] float x = -0.0f; [L223] float y = 0.0f; [L224] 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; [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != pi [L228] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0680a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 10 SDslu, 124 SDs, 0 SdLazy, 132 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1836 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...