/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=SHALLOWEST --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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:02,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:02,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:02,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:02,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:02,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:02,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:02,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:02,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:02,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:02,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:02,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:02,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:02,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:02,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:02,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:02,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:02,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:02,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:02,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:02,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:02,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:02,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:02,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:02,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:02,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:02,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:02,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:02,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:02,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:02,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:02,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:02,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:02,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:02,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:02,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:02,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:02,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:02,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:02,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:02,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:02,918 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 [2020-10-27 01:04:02,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:02,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:02,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:02,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:02,977 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:02,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:02,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:02,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:02,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:02,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:02,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:02,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:02,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:02,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:02,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:02,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:02,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:02,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:02,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:02,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:02,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:02,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:02,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:02,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:02,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:02,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:02,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:02,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:02,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:02,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:03,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:03,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:03,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:03,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:03,457 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:03,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-27 01:04:03,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7a3bf3d/d8dddffaf98b4f5eb63acd26046ae76c/FLAG0f13f9daf [2020-10-27 01:04:04,193 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:04,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-27 01:04:04,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7a3bf3d/d8dddffaf98b4f5eb63acd26046ae76c/FLAG0f13f9daf [2020-10-27 01:04:04,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7a3bf3d/d8dddffaf98b4f5eb63acd26046ae76c [2020-10-27 01:04:04,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:04,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:04,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:04,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:04,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:04,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:04" (1/1) ... [2020-10-27 01:04:04,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c343c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:04, skipping insertion in model container [2020-10-27 01:04:04,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:04" (1/1) ... [2020-10-27 01:04:04,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:04,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:04,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:04,907 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:04,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:05,026 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:05,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05 WrapperNode [2020-10-27 01:04:05,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:05,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:05,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:05,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:05,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:05,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:05,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:05,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:05,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (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 [2020-10-27 01:04:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:04:05,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:04:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:05,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:05,937 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 01:04:05,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:05 BoogieIcfgContainer [2020-10-27 01:04:05,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:05,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:05,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:05,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:05,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:04" (1/3) ... [2020-10-27 01:04:05,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5368ae7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:05, skipping insertion in model container [2020-10-27 01:04:05,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05" (2/3) ... [2020-10-27 01:04:05,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5368ae7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:05, skipping insertion in model container [2020-10-27 01:04:05,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:05" (3/3) ... [2020-10-27 01:04:05,948 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-10-27 01:04:05,960 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:05,964 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:05,978 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:06,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:06,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:06,006 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:06,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:06,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:06,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:06,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:06,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-27 01:04:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:04:06,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:06,046 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] [2020-10-27 01:04:06,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:06,054 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-27 01:04:06,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:06,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741076858] [2020-10-27 01:04:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:04:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 01:04:06,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:04:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:06,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:04:06,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 01:04:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:04:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:04:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:04:06,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741076858] [2020-10-27 01:04:06,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:06,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:06,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931143437] [2020-10-27 01:04:06,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:06,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:06,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:06,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:06,749 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-27 01:04:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:07,019 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-27 01:04:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:07,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:04:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:07,031 INFO L225 Difference]: With dead ends: 107 [2020-10-27 01:04:07,031 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:04:07,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:04:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 01:04:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 01:04:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-27 01:04:07,081 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-27 01:04:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:07,082 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-27 01:04:07,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-27 01:04:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:04:07,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:07,084 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] [2020-10-27 01:04:07,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:07,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-27 01:04:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:07,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000888592] [2020-10-27 01:04:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:07,134 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:07,135 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:07,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:07 BoogieIcfgContainer [2020-10-27 01:04:07,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:07,164 INFO L168 Benchmark]: Toolchain (without parser) took 2606.81 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 70.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:07,165 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:07,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.73 ms. Allocated memory is still 162.5 MB. Free memory was 136.9 MB in the beginning and 125.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:07,167 INFO L168 Benchmark]: Boogie Preprocessor took 123.55 ms. Allocated memory is still 162.5 MB. Free memory was 125.3 MB in the beginning and 123.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:07,167 INFO L168 Benchmark]: RCFGBuilder took 780.26 ms. Allocated memory is still 162.5 MB. Free memory was 123.3 MB in the beginning and 97.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:07,168 INFO L168 Benchmark]: TraceAbstraction took 1220.88 ms. Allocated memory is still 162.5 MB. Free memory was 97.1 MB in the beginning and 70.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:07,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 462.73 ms. Allocated memory is still 162.5 MB. Free memory was 136.9 MB in the beginning and 125.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.55 ms. Allocated memory is still 162.5 MB. Free memory was 125.3 MB in the beginning and 123.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 780.26 ms. Allocated memory is still 162.5 MB. Free memory was 123.3 MB in the beginning and 97.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1220.88 ms. Allocated memory is still 162.5 MB. Free memory was 97.1 MB in the beginning and 70.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 28.0 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, 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; [L121] 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); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1121a.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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.5s 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...