/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:42,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:42,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:42,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:42,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:42,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:42,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:42,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:42,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:42,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:42,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:42,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:42,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:42,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:42,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:42,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:42,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:42,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:42,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:42,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:42,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:42,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:42,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:42,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:42,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:42,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:42,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:42,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:42,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:42,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:42,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:42,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:42,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:42,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:42,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:42,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:42,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:42,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:42,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:42,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:42,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:42,869 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 14:28:42,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:42,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:42,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:42,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:42,898 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:42,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:42,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:42,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:42,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:42,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:42,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:42,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:42,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:42,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:42,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:42,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:42,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:42,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:42,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:42,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:42,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:42,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:42,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:42,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:42,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:42,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:42,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:42,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:42,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:42,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:43,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:43,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:43,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:43,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:43,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:43,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-28 14:28:43,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e2dc7f21/7f8deb2c54ac48d8afbc90dd689e6ddd/FLAGaf5fd2087 [2020-10-28 14:28:44,152 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:44,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-28 14:28:44,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e2dc7f21/7f8deb2c54ac48d8afbc90dd689e6ddd/FLAGaf5fd2087 [2020-10-28 14:28:44,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e2dc7f21/7f8deb2c54ac48d8afbc90dd689e6ddd [2020-10-28 14:28:44,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:44,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:44,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:44,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:44,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:44,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bb571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44, skipping insertion in model container [2020-10-28 14:28:44,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:44,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:44,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:44,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:44,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:44,853 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:44,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44 WrapperNode [2020-10-28 14:28:44,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:44,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:44,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:44,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:44,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:44,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:44,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:44,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:44,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (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 14:28:45,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-28 14:28:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-28 14:28:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:45,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:45,805 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:45 BoogieIcfgContainer [2020-10-28 14:28:45,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:45,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:45,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:45,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:45,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:44" (1/3) ... [2020-10-28 14:28:45,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef4be2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:45, skipping insertion in model container [2020-10-28 14:28:45,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (2/3) ... [2020-10-28 14:28:45,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef4be2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:45, skipping insertion in model container [2020-10-28 14:28:45,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:45" (3/3) ... [2020-10-28 14:28:45,817 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-10-28 14:28:45,831 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:45,838 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:45,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:45,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:45,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:45,888 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:45,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:45,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:45,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:45,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:45,889 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-28 14:28:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:28:45,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,915 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, 1, 1] [2020-10-28 14:28:45,916 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-10-28 14:28:45,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117450391] [2020-10-28 14:28:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:46,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:28:46,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:28:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-28 14:28:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:46,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:28:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:28:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:46,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:28:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:46,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:28:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:28:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:46,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:28:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:46,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:46,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:46,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:28:46,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:46,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:46,762 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 14:28:46,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117450391] [2020-10-28 14:28:46,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:46,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206812036] [2020-10-28 14:28:46,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:46,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:46,795 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-28 14:28:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:47,073 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-10-28 14:28:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:47,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:28:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:47,085 INFO L225 Difference]: With dead ends: 117 [2020-10-28 14:28:47,085 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:28:47,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 14:28:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:28:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-28 14:28:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 14:28:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-28 14:28:47,139 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-10-28 14:28:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:47,140 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-28 14:28:47,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-28 14:28:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:28:47,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:47,142 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, 1, 1, 1, 1, 1] [2020-10-28 14:28:47,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:47,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:47,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-10-28 14:28:47,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:47,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000710105] [2020-10-28 14:28:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:47,194 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:47,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:47,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:47,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:47 BoogieIcfgContainer [2020-10-28 14:28:47,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:47,221 INFO L168 Benchmark]: Toolchain (without parser) took 2716.37 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 74.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:47,222 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 99.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:47,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.26 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 115.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:47,224 INFO L168 Benchmark]: Boogie Preprocessor took 61.18 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 113.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:47,225 INFO L168 Benchmark]: RCFGBuilder took 890.27 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 117.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:47,226 INFO L168 Benchmark]: TraceAbstraction took 1408.99 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 74.0 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:47,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 99.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.26 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 115.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.18 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 113.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 890.27 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 117.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1408.99 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 74.0 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...