/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_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:40,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:40,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:40,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:40,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:40,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:40,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:40,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:40,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:40,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:40,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:40,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:40,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:40,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:40,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:40,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:40,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:40,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:40,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:40,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:40,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:40,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:40,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:40,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:40,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:40,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:40,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:40,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:40,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:40,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:40,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:40,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:40,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:40,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:40,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:40,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:40,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:40,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:40,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:40,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:40,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:40,967 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 14:28:41,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:41,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:41,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:41,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:41,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:41,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:41,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:41,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:41,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:41,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:41,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:41,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:41,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:41,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:41,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:41,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:41,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:41,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:41,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:41,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:41,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:41,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:41,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:41,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:41,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:41,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:41,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:41,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:41,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:41,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:41,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:41,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:41,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:41,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:41,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:41,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-10-28 14:28:41,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6eb177c5/0cfda045d4e348aba2d1ee0e36372ead/FLAG6e53b9ec3 [2020-10-28 14:28:42,327 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:42,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-10-28 14:28:42,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6eb177c5/0cfda045d4e348aba2d1ee0e36372ead/FLAG6e53b9ec3 [2020-10-28 14:28:42,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6eb177c5/0cfda045d4e348aba2d1ee0e36372ead [2020-10-28 14:28:42,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:42,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:42,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:42,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:42,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:42,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf2976a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:42, skipping insertion in model container [2020-10-28 14:28:42,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:42,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:43,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,074 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:43,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,188 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:43,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43 WrapperNode [2020-10-28 14:28:43,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:43,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:43,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:43,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:43,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:43,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (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 14:28:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:43,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:43,910 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-28 14:28:43,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:43 BoogieIcfgContainer [2020-10-28 14:28:43,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:43,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:43,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:43,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:43,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:42" (1/3) ... [2020-10-28 14:28:43,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a523d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (2/3) ... [2020-10-28 14:28:43,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a523d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:43" (3/3) ... [2020-10-28 14:28:43,921 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-10-28 14:28:43,937 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:43,945 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:43,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:43,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:43,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:43,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:43,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:43,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:43,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:43,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:43,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-28 14:28:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:28:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:44,023 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 14:28:44,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-28 14:28:44,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:44,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117351714] [2020-10-28 14:28:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:28:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 14:28:44,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:28:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:28:44,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:44,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:28:44,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:28:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:28:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,681 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 14:28:44,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117351714] [2020-10-28 14:28:44,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:44,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834108666] [2020-10-28 14:28:44,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:44,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:44,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:44,709 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-28 14:28:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:45,145 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-28 14:28:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:45,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:28:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:45,160 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:28:45,160 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:28:45,169 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 14:28:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:28:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 14:28:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:28:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-28 14:28:45,239 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-28 14:28:45,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:45,240 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-28 14:28:45,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-28 14:28:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:28:45,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,242 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] [2020-10-28 14:28:45,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:45,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,245 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-28 14:28:45,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11307831] [2020-10-28 14:28:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:45,362 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:45,363 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:45,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:45,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:45 BoogieIcfgContainer [2020-10-28 14:28:45,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:45,391 INFO L168 Benchmark]: Toolchain (without parser) took 2682.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 124.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,392 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.80 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,394 INFO L168 Benchmark]: Boogie Preprocessor took 58.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,395 INFO L168 Benchmark]: RCFGBuilder took 663.22 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 120.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,396 INFO L168 Benchmark]: TraceAbstraction took 1474.63 ms. Allocated memory is still 151.0 MB. Free memory was 119.5 MB in the beginning and 124.7 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 469.80 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 663.22 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 120.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1474.63 ms. Allocated memory is still 151.0 MB. Free memory was 119.5 MB in the beginning and 124.7 MB in the end (delta: -5.2 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; [L120] 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); [L120] RET, EXPR fmod_float(x, y) [L120] float res = fmod_float(x, y); [L123] CALL, EXPR isnan_float(res) [L110] return x != x; [L123] RET, EXPR isnan_float(res) [L123] COND TRUE !isnan_float(res) [L124] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1121b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 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: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 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=59occurred 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, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...