/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0663a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:11,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:11,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:11,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:11,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:11,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:11,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:11,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:11,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:11,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:11,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:11,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:11,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:11,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:11,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:11,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:11,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:11,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:11,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:11,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:11,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:11,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:11,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:11,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:11,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:11,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:11,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:11,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:11,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:11,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:11,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:11,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:11,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:11,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:11,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:11,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:11,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:11,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:11,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:11,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:11,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:11,921 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 [2020-10-29 09:08:11,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:11,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:11,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:11,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:11,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:11,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:11,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:11,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:11,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:11,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:11,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:11,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:11,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:11,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:11,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:11,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:11,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:11,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:11,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:11,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:11,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:11,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:11,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:11,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:11,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:11,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:11,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:11,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:11,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:11,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:12,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:12,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:12,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:12,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:12,494 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:12,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2020-10-29 09:08:12,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d17e8661/e6099dc0cd894e9db72924a1fbf5a8da/FLAG881dbb044 [2020-10-29 09:08:13,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:13,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2020-10-29 09:08:13,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d17e8661/e6099dc0cd894e9db72924a1fbf5a8da/FLAG881dbb044 [2020-10-29 09:08:13,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d17e8661/e6099dc0cd894e9db72924a1fbf5a8da [2020-10-29 09:08:13,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:13,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:13,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:13,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:13,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:13,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:13" (1/1) ... [2020-10-29 09:08:13,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:13, skipping insertion in model container [2020-10-29 09:08:13,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:13" (1/1) ... [2020-10-29 09:08:13,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:13,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:14,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:14,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:14,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:14,102 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:14,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14 WrapperNode [2020-10-29 09:08:14,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:14,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:14,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:14,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:14,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (1/1) ... [2020-10-29 09:08:14,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:14,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:14,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:14,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:14,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (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 [2020-10-29 09:08:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:08:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-29 09:08:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-29 09:08:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:08:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-29 09:08:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-29 09:08:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:15,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:15,119 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-29 09:08:15,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:15 BoogieIcfgContainer [2020-10-29 09:08:15,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:15,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:15,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:15,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:15,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:13" (1/3) ... [2020-10-29 09:08:15,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:15, skipping insertion in model container [2020-10-29 09:08:15,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:14" (2/3) ... [2020-10-29 09:08:15,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:15, skipping insertion in model container [2020-10-29 09:08:15,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:15" (3/3) ... [2020-10-29 09:08:15,131 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0663a.c [2020-10-29 09:08:15,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:15,149 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:15,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:15,193 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:15,194 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:15,194 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:15,194 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:15,194 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:15,194 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:15,194 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:15,194 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-29 09:08:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:08:15,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:15,223 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] [2020-10-29 09:08:15,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:15,230 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-29 09:08:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:15,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699863861] [2020-10-29 09:08:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:08:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 09:08:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:15,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:08:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:15,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:15,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:15,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:08:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:15,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:08:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:16,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:16,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:08:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:08:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:16,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:16,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699863861] [2020-10-29 09:08:16,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:16,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:16,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955662668] [2020-10-29 09:08:16,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:16,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:16,065 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-29 09:08:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:16,537 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-29 09:08:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:16,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:08:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:16,550 INFO L225 Difference]: With dead ends: 201 [2020-10-29 09:08:16,551 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:08:16,555 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 [2020-10-29 09:08:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:08:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-29 09:08:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:08:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-29 09:08:16,611 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-29 09:08:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:16,611 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-29 09:08:16,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-29 09:08:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:08:16,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:16,613 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] [2020-10-29 09:08:16,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:16,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:16,615 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-29 09:08:16,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:16,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749083675] [2020-10-29 09:08:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:16,700 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:16,701 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:16,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:16,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:16 BoogieIcfgContainer [2020-10-29 09:08:16,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:16,736 INFO L168 Benchmark]: Toolchain (without parser) took 3062.33 ms. Allocated memory was 151.0 MB in the beginning and 210.8 MB in the end (delta: 59.8 MB). Free memory was 126.2 MB in the beginning and 119.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 67.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:16,745 INFO L168 Benchmark]: CDTParser took 1.75 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 220.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:16,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 111.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:16,747 INFO L168 Benchmark]: Boogie Preprocessor took 72.15 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 109.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:16,748 INFO L168 Benchmark]: RCFGBuilder took 944.23 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 104.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:16,750 INFO L168 Benchmark]: TraceAbstraction took 1608.30 ms. Allocated memory was 151.0 MB in the beginning and 210.8 MB in the end (delta: 59.8 MB). Free memory was 103.8 MB in the beginning and 119.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:16,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.75 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 220.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 423.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 111.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.15 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 109.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 944.23 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 104.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1608.30 ms. Allocated memory was 151.0 MB in the beginning and 210.8 MB in the end (delta: 59.8 MB). Free memory was 103.8 MB in the beginning and 119.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 44.2 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 230, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 218, 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 [L227] 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; [L227] RET, EXPR __ieee754_atan2f(y, x) [L227] float res = __ieee754_atan2f(y, x); [L230] COND TRUE res != pi_o_2 [L231] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0663a.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: 0.5s, 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, 0.2s 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...