/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 14:27:56,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:56,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:56,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:56,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:56,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:56,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:56,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:56,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:56,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:56,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:56,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:56,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:56,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:56,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:56,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:56,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:56,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:56,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:56,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:56,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:56,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:56,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:56,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:56,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:56,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:56,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:56,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:56,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:56,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:56,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:56,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:56,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:56,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:56,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:56,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:56,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:56,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:56,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:56,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:56,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:56,836 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 [2020-10-28 14:27:56,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:56,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:56,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:56,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:56,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:56,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:56,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:56,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:56,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:56,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:56,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:56,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:56,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:56,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:56,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:56,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:56,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:56,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:56,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:56,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:56,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:56,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:56,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:56,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:56,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:56,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:56,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:56,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:56,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:57,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:57,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:57,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:57,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:57,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:57,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-28 14:27:57,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cf8aa18/219f22064a7c447d926eb9480716cb1a/FLAGd8a371e66 [2020-10-28 14:27:58,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:58,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-28 14:27:58,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cf8aa18/219f22064a7c447d926eb9480716cb1a/FLAGd8a371e66 [2020-10-28 14:27:58,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cf8aa18/219f22064a7c447d926eb9480716cb1a [2020-10-28 14:27:58,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:58,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:58,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:58,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:58,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:58,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:58" (1/1) ... [2020-10-28 14:27:58,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2351fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:58, skipping insertion in model container [2020-10-28 14:27:58,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:58" (1/1) ... [2020-10-28 14:27:58,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:58,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:58,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:58,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:58,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:59,010 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:59,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59 WrapperNode [2020-10-28 14:27:59,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:59,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:59,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:59,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:59,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (1/1) ... [2020-10-28 14:27:59,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:59,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:59,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:59,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:59,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (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 [2020-10-28 14:27:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:59,174 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:27:59,174 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:27:59,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-28 14:27:59,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:27:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:27:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-28 14:27:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:27:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:00,068 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:00,068 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:00,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:00 BoogieIcfgContainer [2020-10-28 14:28:00,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:00,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:00,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:00,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:58" (1/3) ... [2020-10-28 14:28:00,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a6316a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:00, skipping insertion in model container [2020-10-28 14:28:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:59" (2/3) ... [2020-10-28 14:28:00,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a6316a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:00, skipping insertion in model container [2020-10-28 14:28:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:00" (3/3) ... [2020-10-28 14:28:00,086 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2020-10-28 14:28:00,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:00,105 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:00,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:00,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:00,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:00,171 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:00,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:00,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:00,172 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:00,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:00,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-28 14:28:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:28:00,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:00,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:00,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2093410893, now seen corresponding path program 1 times [2020-10-28 14:28:00,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:00,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997049689] [2020-10-28 14:28:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:00,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:28:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-28 14:28:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:00,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:28:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:28:00,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:28:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:00,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:28:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:28:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:01,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:01,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997049689] [2020-10-28 14:28:01,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:01,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:01,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610181439] [2020-10-28 14:28:01,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:01,065 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-28 14:28:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:01,573 INFO L93 Difference]: Finished difference Result 195 states and 308 transitions. [2020-10-28 14:28:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:01,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 14:28:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:01,587 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:28:01,587 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 14:28:01,592 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 [2020-10-28 14:28:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 14:28:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-28 14:28:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 14:28:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-28 14:28:01,651 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-28 14:28:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:01,652 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-28 14:28:01,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-28 14:28:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:28:01,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:01,653 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] [2020-10-28 14:28:01,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:01,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2002604426, now seen corresponding path program 1 times [2020-10-28 14:28:01,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:01,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465655992] [2020-10-28 14:28:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:01,733 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:01,733 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:01,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:01,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:01 BoogieIcfgContainer [2020-10-28 14:28:01,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:01,767 INFO L168 Benchmark]: Toolchain (without parser) took 3117.93 ms. Allocated memory was 152.0 MB in the beginning and 203.4 MB in the end (delta: 51.4 MB). Free memory was 127.3 MB in the beginning and 137.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:01,775 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 152.0 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:01,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.06 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 112.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:01,778 INFO L168 Benchmark]: Boogie Preprocessor took 78.83 ms. Allocated memory is still 152.0 MB. Free memory was 112.4 MB in the beginning and 109.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:01,779 INFO L168 Benchmark]: RCFGBuilder took 976.97 ms. Allocated memory is still 152.0 MB. Free memory was 109.6 MB in the beginning and 70.8 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:01,780 INFO L168 Benchmark]: TraceAbstraction took 1686.04 ms. Allocated memory was 152.0 MB in the beginning and 203.4 MB in the end (delta: 51.4 MB). Free memory was 70.3 MB in the beginning and 137.6 MB in the end (delta: -67.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:01,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 152.0 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.06 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 112.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.83 ms. Allocated memory is still 152.0 MB. Free memory was 112.4 MB in the beginning and 109.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 976.97 ms. Allocated memory is still 152.0 MB. Free memory was 109.6 MB in the beginning and 70.8 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1686.04 ms. Allocated memory was 152.0 MB in the beginning and 203.4 MB in the end (delta: 51.4 MB). Free memory was 70.3 MB in the beginning and 137.6 MB in the end (delta: -67.3 MB). There was no memory consumed. 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, 0.1s 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, 0.5s 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...