/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:16,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:16,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:16,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:16,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:16,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:16,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:16,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:16,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:16,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:16,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:16,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:16,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:16,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:16,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:16,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:16,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:16,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:16,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:16,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:16,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:16,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:16,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:16,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:16,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:16,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:16,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:16,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:16,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:16,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:16,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:16,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:16,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:16,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:16,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:16,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:16,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:16,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:16,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:16,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:16,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:16,926 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 [2020-09-24 21:30:16,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:16,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:16,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:16,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:16,976 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:16,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:16,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:16,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:16,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:16,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:16,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:16,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:16,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:16,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:16,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:16,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:16,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:16,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:16,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:16,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:16,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:16,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:16,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:16,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:16,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:16,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:16,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:16,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:16,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:16,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:17,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:17,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:17,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:17,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:17,502 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:17,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-24 21:30:17,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4406154b/5fe8cc98c4674022b16371cc3e6c2100/FLAG452b8ebbd [2020-09-24 21:30:18,160 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:18,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-24 21:30:18,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4406154b/5fe8cc98c4674022b16371cc3e6c2100/FLAG452b8ebbd [2020-09-24 21:30:18,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4406154b/5fe8cc98c4674022b16371cc3e6c2100 [2020-09-24 21:30:18,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:18,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:18,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:18,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:18,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:18,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:18" (1/1) ... [2020-09-24 21:30:18,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:18, skipping insertion in model container [2020-09-24 21:30:18,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:18" (1/1) ... [2020-09-24 21:30:18,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:18,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:19,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:19,103 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:19,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:19,187 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:19,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19 WrapperNode [2020-09-24 21:30:19,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:19,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:19,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:19,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:19,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:19,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:19,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:19,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:19,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (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 [2020-09-24 21:30:19,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:19,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:19,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:19,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 21:30:19,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 21:30:19,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 21:30:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 21:30:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 21:30:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 21:30:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:20,128 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:20,129 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 21:30:20,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:20 BoogieIcfgContainer [2020-09-24 21:30:20,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:20,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:20,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:20,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:18" (1/3) ... [2020-09-24 21:30:20,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:20, skipping insertion in model container [2020-09-24 21:30:20,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (2/3) ... [2020-09-24 21:30:20,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:20, skipping insertion in model container [2020-09-24 21:30:20,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:20" (3/3) ... [2020-09-24 21:30:20,148 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-24 21:30:20,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:20,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:20,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:20,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:20,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:20,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:20,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:20,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:20,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:20,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:20,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-24 21:30:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 21:30:20,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:20,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:20,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-24 21:30:20,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:20,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692541371] [2020-09-24 21:30:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:30:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 21:30:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 21:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:30:20,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:20,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:30:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:30:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:30:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:30:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:30:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:20,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692541371] [2020-09-24 21:30:20,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:20,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:20,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245332723] [2020-09-24 21:30:20,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:20,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:20,920 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-24 21:30:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:21,473 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-24 21:30:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:21,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 21:30:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:21,493 INFO L225 Difference]: With dead ends: 415 [2020-09-24 21:30:21,494 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 21:30:21,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:30:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 21:30:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-24 21:30:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-24 21:30:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-24 21:30:21,573 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-24 21:30:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:21,574 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-24 21:30:21,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-24 21:30:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 21:30:21,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:21,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:21,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:21,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:21,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-24 21:30:21,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:21,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934212321] [2020-09-24 21:30:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:21,670 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:21,670 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:21,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:21,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:21 BoogieIcfgContainer [2020-09-24 21:30:21,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:21,722 INFO L168 Benchmark]: Toolchain (without parser) took 3192.12 ms. Allocated memory was 144.2 MB in the beginning and 229.1 MB in the end (delta: 84.9 MB). Free memory was 99.9 MB in the beginning and 127.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:21,725 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:30:21,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.60 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 99.2 MB in the beginning and 174.2 MB in the end (delta: -74.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:21,729 INFO L168 Benchmark]: Boogie Preprocessor took 70.75 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 171.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:21,730 INFO L168 Benchmark]: RCFGBuilder took 877.45 ms. Allocated memory is still 199.8 MB. Free memory was 171.4 MB in the beginning and 122.9 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:21,732 INFO L168 Benchmark]: TraceAbstraction took 1578.51 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 122.9 MB in the beginning and 127.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:21,742 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.60 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 99.2 MB in the beginning and 174.2 MB in the end (delta: -74.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.75 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 171.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 877.45 ms. Allocated memory is still 199.8 MB. Free memory was 171.4 MB in the beginning and 122.9 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1578.51 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 122.9 MB in the beginning and 127.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...