/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:51:21,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:51:21,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:51:21,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:51:21,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:51:21,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:51:21,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:51:21,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:51:21,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:51:21,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:51:21,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:51:21,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:51:21,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:51:21,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:51:21,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:51:21,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:51:21,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:51:21,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:51:21,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:51:21,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:51:21,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:51:21,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:51:21,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:51:21,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:51:21,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:51:21,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:51:21,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:51:21,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:51:21,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:51:21,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:51:21,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:51:21,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:51:21,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:51:21,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:51:21,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:51:21,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:51:21,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:51:21,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:51:21,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:51:21,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:51:21,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:51:21,213 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 [2020-09-25 08:51:21,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:51:21,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:51:21,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:51:21,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:51:21,241 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:51:21,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:51:21,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:51:21,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:51:21,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:51:21,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:51:21,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:51:21,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:51:21,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:51:21,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:51:21,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:51:21,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:51:21,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:51:21,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:51:21,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:51:21,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:51:21,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:51:21,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:51:21,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:51:21,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:51:21,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:51:21,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:51:21,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:51:21,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:51:21,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:51:21,246 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:51:21,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:51:21,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:51:21,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:51:21,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:51:21,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:51:21,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-09-25 08:51:21,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff0c7653/632901496aac415a96054b9dcd992bca/FLAGb3d901d21 [2020-09-25 08:51:22,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:51:22,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-09-25 08:51:22,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff0c7653/632901496aac415a96054b9dcd992bca/FLAGb3d901d21 [2020-09-25 08:51:22,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff0c7653/632901496aac415a96054b9dcd992bca [2020-09-25 08:51:22,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:51:22,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:51:22,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:22,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:51:22,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:51:22,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:22" (1/1) ... [2020-09-25 08:51:22,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d9d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:22, skipping insertion in model container [2020-09-25 08:51:22,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:22" (1/1) ... [2020-09-25 08:51:22,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:51:22,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:51:22,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:22,994 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:51:23,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:23,061 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:51:23,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23 WrapperNode [2020-09-25 08:51:23,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:23,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:51:23,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:51:23,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:51:23,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (1/1) ... [2020-09-25 08:51:23,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:51:23,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:51:23,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:51:23,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:51:23,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (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 [2020-09-25 08:51:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:51:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:51:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 08:51:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-25 08:51:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 08:51:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:51:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:51:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 08:51:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-25 08:51:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:51:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 08:51:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:51:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:51:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:51:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 08:51:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 08:51:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:51:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:51:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:51:23,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:51:23,787 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 08:51:23,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:23 BoogieIcfgContainer [2020-09-25 08:51:23,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:51:23,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:51:23,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:51:23,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:51:23,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:51:22" (1/3) ... [2020-09-25 08:51:23,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a374b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:23, skipping insertion in model container [2020-09-25 08:51:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:23" (2/3) ... [2020-09-25 08:51:23,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a374b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:23, skipping insertion in model container [2020-09-25 08:51:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:23" (3/3) ... [2020-09-25 08:51:23,801 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-09-25 08:51:23,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:51:23,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:51:23,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:51:23,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:51:23,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:51:23,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:51:23,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:51:23,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:51:23,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:51:23,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:51:23,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:51:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-09-25 08:51:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 08:51:23,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:23,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:51:23,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:23,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2016969319, now seen corresponding path program 1 times [2020-09-25 08:51:23,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:23,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468554341] [2020-09-25 08:51:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 08:51:24,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 08:51:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:24,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 08:51:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:51:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:24,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:24,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:24,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:51:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:24,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:51:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:51:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:51:24,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:24,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:51:24,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468554341] [2020-09-25 08:51:24,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:24,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:51:24,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735991338] [2020-09-25 08:51:24,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:51:24,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:51:24,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:51:24,362 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2020-09-25 08:51:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:24,649 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2020-09-25 08:51:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:51:24,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 08:51:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:24,666 INFO L225 Difference]: With dead ends: 194 [2020-09-25 08:51:24,666 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 08:51:24,671 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 [2020-09-25 08:51:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 08:51:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 08:51:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 08:51:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-09-25 08:51:24,729 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 29 [2020-09-25 08:51:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:24,730 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-09-25 08:51:24,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:51:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-09-25 08:51:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:51:24,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:24,733 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] [2020-09-25 08:51:24,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:51:24,734 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:24,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1112139357, now seen corresponding path program 1 times [2020-09-25 08:51:24,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:24,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403049403] [2020-09-25 08:51:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:51:24,808 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:51:24,809 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:51:24,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:51:24,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:51:24 BoogieIcfgContainer [2020-09-25 08:51:24,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:51:24,868 INFO L168 Benchmark]: Toolchain (without parser) took 2167.26 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 202.9 MB in the end (delta: -100.5 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,869 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.89 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 89.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,871 INFO L168 Benchmark]: Boogie Preprocessor took 146.60 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.8 MB in the beginning and 178.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,872 INFO L168 Benchmark]: RCFGBuilder took 583.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 151.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,873 INFO L168 Benchmark]: TraceAbstraction took 1070.61 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 150.8 MB in the beginning and 202.9 MB in the end (delta: -52.1 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:24,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.89 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 89.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.60 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.8 MB in the beginning and 178.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 583.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 151.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1070.61 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 150.8 MB in the beginning and 202.9 MB in the end (delta: -52.1 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND FALSE !(exponent_less_1023 < 20) [L41] COND TRUE exponent_less_1023 > 51 [L42] COND TRUE exponent_less_1023 == 1024 [L43] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 15 SDslu, 82 SDs, 0 SdLazy, 120 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=104occurred 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, 0.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 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...