/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_0490a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:38,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:38,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:38,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:38,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:38,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:38,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:38,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:38,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:38,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:38,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:38,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:38,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:38,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:38,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:38,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:38,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:38,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:38,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:38,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:38,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:38,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:38,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:38,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:38,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:38,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:38,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:38,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:38,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:38,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:38,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:38,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:38,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:38,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:38,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:38,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:38,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:38,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:38,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:38,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:38,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:38,873 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 14:27:38,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:38,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:38,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:38,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:38,929 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:38,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:38,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:38,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:38,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:38,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:38,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:38,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:38,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:38,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:38,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:38,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:38,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:38,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:38,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:38,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:38,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:38,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:38,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:38,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:38,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:38,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:38,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:38,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:38,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:38,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:39,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:39,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:39,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:39,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:39,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:39,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0490a.c [2020-10-28 14:27:39,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b969a6a/c0dc6e3f75844e34811dfe23b4fe5fbd/FLAG65f54d4e5 [2020-10-28 14:27:40,311 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:40,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0490a.c [2020-10-28 14:27:40,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b969a6a/c0dc6e3f75844e34811dfe23b4fe5fbd/FLAG65f54d4e5 [2020-10-28 14:27:40,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b969a6a/c0dc6e3f75844e34811dfe23b4fe5fbd [2020-10-28 14:27:40,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:40,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:40,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:40,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:40,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:40,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:40" (1/1) ... [2020-10-28 14:27:40,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a99b5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:40, skipping insertion in model container [2020-10-28 14:27:40,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:40" (1/1) ... [2020-10-28 14:27:40,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:40,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:40,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:40,915 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:40,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:41,007 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:41,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41 WrapperNode [2020-10-28 14:27:41,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:41,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:41,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:41,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:41,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (1/1) ... [2020-10-28 14:27:41,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:41,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:41,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:41,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:41,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (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 14:27:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:27:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-28 14:27:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acosf [2020-10-28 14:27:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acosf [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:41,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:41,731 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-28 14:27:41,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:41 BoogieIcfgContainer [2020-10-28 14:27:41,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:41,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:41,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:41,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:41,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:40" (1/3) ... [2020-10-28 14:27:41,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384532b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:41, skipping insertion in model container [2020-10-28 14:27:41,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:41" (2/3) ... [2020-10-28 14:27:41,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384532b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:41, skipping insertion in model container [2020-10-28 14:27:41,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:41" (3/3) ... [2020-10-28 14:27:41,742 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0490a.c [2020-10-28 14:27:41,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:41,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:41,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:41,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:41,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:41,808 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:41,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:41,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:41,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:41,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:41,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-10-28 14:27:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:27:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:41,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:41,843 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1349169052, now seen corresponding path program 1 times [2020-10-28 14:27:41,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:41,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022526719] [2020-10-28 14:27:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:27:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 14:27:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:42,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:27:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:42,449 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:27:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:42,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:42,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:42,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:27:42,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:42,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:27:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:27:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:42,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:27:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:27:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:42,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:42,563 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 14:27:42,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022526719] [2020-10-28 14:27:42,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:42,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:42,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954481134] [2020-10-28 14:27:42,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:42,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:42,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:42,590 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-10-28 14:27:42,722 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 14:27:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:43,048 INFO L93 Difference]: Finished difference Result 131 states and 194 transitions. [2020-10-28 14:27:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:43,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:27:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:43,062 INFO L225 Difference]: With dead ends: 131 [2020-10-28 14:27:43,062 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 14:27:43,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 14:27:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-28 14:27:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 14:27:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-28 14:27:43,126 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 23 [2020-10-28 14:27:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:43,127 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-28 14:27:43,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-28 14:27:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:27:43,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:43,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:43,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:43,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:43,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:43,131 INFO L82 PathProgramCache]: Analyzing trace with hash 167871394, now seen corresponding path program 1 times [2020-10-28 14:27:43,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:43,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258531030] [2020-10-28 14:27:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:43,186 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:43,186 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:43,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:43,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:43 BoogieIcfgContainer [2020-10-28 14:27:43,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:43,211 INFO L168 Benchmark]: Toolchain (without parser) took 2605.07 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 105.6 MB in the end (delta: 26.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:43,212 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:43,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.22 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 117.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:43,214 INFO L168 Benchmark]: Boogie Preprocessor took 61.77 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 115.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:43,215 INFO L168 Benchmark]: RCFGBuilder took 660.46 ms. Allocated memory is still 157.3 MB. Free memory was 115.6 MB in the beginning and 120.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:43,216 INFO L168 Benchmark]: TraceAbstraction took 1474.44 ms. Allocated memory is still 157.3 MB. Free memory was 119.9 MB in the beginning and 105.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:43,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 396.22 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 117.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.77 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 115.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.46 ms. Allocated memory is still 157.3 MB. Free memory was 115.6 MB in the beginning and 120.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1474.44 ms. Allocated memory is still 157.3 MB. Free memory was 119.9 MB in the beginning and 105.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.8 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 15, overapproximation of someUnaryDOUBLEoperation at line 89, overapproximation of bitwiseAnd at line 103, overapproximation of someBinaryArithmeticFLOAToperation at line 170. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L86-L93] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L170] float x = 1.0f / 0.0f; [L171] CALL, EXPR __ieee754_acosf(x) [L96] float z, p, q, r, w, s, c, df; [L97] __int32_t hx, ix; [L99] ieee_float_shape_type gf_u; [L100] gf_u.value = (x) [L101] EXPR gf_u.word [L101] (hx) = gf_u.word [L103] ix = hx & 0x7fffffff [L104] COND TRUE ix == 0x3f800000 [L105] COND TRUE hx > 0 [L106] return 0.0; [L171] RET, EXPR __ieee754_acosf(x) [L171] float res = __ieee754_acosf(x); [L174] CALL, EXPR isnan_float(res) [L15] return x != x; [L174] RET, EXPR isnan_float(res) [L174] COND TRUE !isnan_float(res) [L175] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0490a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 12 SDslu, 69 SDs, 0 SdLazy, 78 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 2464 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...