/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_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:03,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:03,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:03,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:03,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:03,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:03,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:03,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:03,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:03,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:03,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:03,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:03,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:03,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:03,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:03,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:03,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:03,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:03,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:03,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:03,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:03,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:03,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:03,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:03,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:03,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:03,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:03,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:03,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:03,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:03,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:03,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:03,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:03,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:03,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:03,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:03,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:03,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:03,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:03,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:03,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:03,919 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 01:04:03,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:03,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:03,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:03,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:03,972 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:03,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:03,973 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:03,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:03,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:03,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:03,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:03,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:03,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:03,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:03,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:03,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:03,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:03,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:03,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:03,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:03,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:03,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:03,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:03,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:03,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:03,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:03,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:03,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:03,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:03,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:04,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:04,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:04,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:04,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:04,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:04,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-27 01:04:04,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff89cf722/2874dfeccaf84344964d5aa5b0c5435d/FLAGba76f1f76 [2020-10-27 01:04:05,174 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:05,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-27 01:04:05,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff89cf722/2874dfeccaf84344964d5aa5b0c5435d/FLAGba76f1f76 [2020-10-27 01:04:05,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff89cf722/2874dfeccaf84344964d5aa5b0c5435d [2020-10-27 01:04:05,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:05,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:05,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:05,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:05,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:05,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e531219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05, skipping insertion in model container [2020-10-27 01:04:05,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:05,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:05,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:05,793 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:05,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:05,873 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:05,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05 WrapperNode [2020-10-27 01:04:05,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:05,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:05,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:05,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:05,891 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 01:04:05,893 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 01:04:05,922 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 01:04:05,925 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 01:04:05,958 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 01:04:05,977 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 01:04:05,986 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 01:04:05,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:05,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:05,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:05,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:06,003 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 01:04:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:04:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:04:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:06,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:06,809 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 01:04:06,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:06 BoogieIcfgContainer [2020-10-27 01:04:06,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:06,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:06,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:06,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:05" (1/3) ... [2020-10-27 01:04:06,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:06, skipping insertion in model container [2020-10-27 01:04:06,819 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 01:04:06,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:06, skipping insertion in model container [2020-10-27 01:04:06,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:06" (3/3) ... [2020-10-27 01:04:06,822 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2020-10-27 01:04:06,836 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:06,842 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:06,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:06,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:06,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:06,888 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:06,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:06,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:06,889 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:06,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:06,889 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-27 01:04:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:04:06,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:06,918 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 01:04:06,919 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-27 01:04:06,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:06,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865129529] [2020-10-27 01:04:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:04:07,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 01:04:07,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:04:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:04:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:04:07,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:04:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:04:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:07,666 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 01:04:07,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865129529] [2020-10-27 01:04:07,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:07,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:07,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499482246] [2020-10-27 01:04:07,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:07,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:07,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:07,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:07,693 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-27 01:04:08,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:08,064 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-27 01:04:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:08,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:04:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:08,076 INFO L225 Difference]: With dead ends: 107 [2020-10-27 01:04:08,077 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:04:08,081 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 [2020-10-27 01:04:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:04:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 01:04:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 01:04:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-27 01:04:08,134 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-27 01:04:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:08,134 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-27 01:04:08,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-27 01:04:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:04:08,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:08,136 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 01:04:08,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:08,137 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-27 01:04:08,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:08,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483713910] [2020-10-27 01:04:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:08,225 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:08,226 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:08,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:08,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:08 BoogieIcfgContainer [2020-10-27 01:04:08,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:08,259 INFO L168 Benchmark]: Toolchain (without parser) took 2715.41 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 52.4 MB in the end (delta: 73.8 MB). Peak memory consumption was 74.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,260 INFO L168 Benchmark]: CDTParser took 0.58 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. [2020-10-27 01:04:08,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 113.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,264 INFO L168 Benchmark]: Boogie Preprocessor took 119.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 111.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,265 INFO L168 Benchmark]: RCFGBuilder took 812.60 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 130.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,266 INFO L168 Benchmark]: TraceAbstraction took 1440.45 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 52.4 MB in the end (delta: 77.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 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 328.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 113.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 119.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 111.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 812.60 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 130.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1440.45 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 52.4 MB in the end (delta: 77.1 MB). Peak memory consumption was 77.6 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 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, }; [L119] float x = 1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [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_1122a.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, 0.1s 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, 0.5s 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...