/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 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=NARROWEST --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:59,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:59,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:59,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:59,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:59,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:59,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:59,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:59,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:59,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:59,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:59,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:59,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:59,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:59,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:59,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:59,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:59,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:59,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:59,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:59,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:59,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:59,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:59,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:59,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:59,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:59,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:59,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:59,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:59,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:59,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:59,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:59,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:59,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:59,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:59,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:59,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:59,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:59,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:59,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:59,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:59,297 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 [2020-10-13 10:18:59,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:59,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:59,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:59,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:59,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:59,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:59,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:59,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:59,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:59,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:59,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:59,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:59,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:59,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:59,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:59,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:59,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:59,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:59,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:59,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:59,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:59,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:59,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:59,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:59,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:59,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:59,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:59,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:59,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:59,348 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 -> 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:18:59,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:59,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:59,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:59,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:59,692 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:59,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-10-13 10:18:59,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876bc5b5/f809d226d2114eb8b0135d0b2ac81667/FLAG9e95539b3 [2020-10-13 10:19:00,211 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:00,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-10-13 10:19:00,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876bc5b5/f809d226d2114eb8b0135d0b2ac81667/FLAG9e95539b3 [2020-10-13 10:19:00,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a876bc5b5/f809d226d2114eb8b0135d0b2ac81667 [2020-10-13 10:19:00,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:00,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:00,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:00,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:00,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:00,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:00" (1/1) ... [2020-10-13 10:19:00,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:00, skipping insertion in model container [2020-10-13 10:19:00,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:00" (1/1) ... [2020-10-13 10:19:00,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:00,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:00,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:00,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:01,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:01,057 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:01,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01 WrapperNode [2020-10-13 10:19:01,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:01,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:01,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:01,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:01,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (1/1) ... [2020-10-13 10:19:01,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:01,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:01,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:01,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:01,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (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 [2020-10-13 10:19:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-13 10:19:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:19:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:19:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-13 10:19:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:19:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:19:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:01,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:01,756 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-13 10:19:01,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:01 BoogieIcfgContainer [2020-10-13 10:19:01,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:01,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:01,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:01,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:01,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:00" (1/3) ... [2020-10-13 10:19:01,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3240ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:01, skipping insertion in model container [2020-10-13 10:19:01,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:01" (2/3) ... [2020-10-13 10:19:01,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3240ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:01, skipping insertion in model container [2020-10-13 10:19:01,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:01" (3/3) ... [2020-10-13 10:19:01,770 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-10-13 10:19:01,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:01,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:01,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:01,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:01,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:01,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:01,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:01,831 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:01,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:01,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:01,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-13 10:19:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:19:01,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:01,857 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] [2020-10-13 10:19:01,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:01,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:01,862 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-10-13 10:19:01,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:01,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700458540] [2020-10-13 10:19:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:02,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:19:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:19:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-13 10:19:02,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:19:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:02,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:02,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:19:02,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:19:02,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:19:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:19:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:19:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:19:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:02,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700458540] [2020-10-13 10:19:02,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:02,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:02,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259627783] [2020-10-13 10:19:02,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:02,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:02,576 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-10-13 10:19:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:02,969 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-10-13 10:19:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:19:02,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 10:19:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:02,982 INFO L225 Difference]: With dead ends: 138 [2020-10-13 10:19:02,983 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 10:19:02,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 10:19:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-13 10:19:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 10:19:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-10-13 10:19:03,032 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-10-13 10:19:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:03,032 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-10-13 10:19:03,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-10-13 10:19:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:19:03,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:03,034 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] [2020-10-13 10:19:03,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:03,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:03,035 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-10-13 10:19:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:03,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830887069] [2020-10-13 10:19:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:03,093 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:03,093 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:03,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:03,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:03 BoogieIcfgContainer [2020-10-13 10:19:03,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:03,123 INFO L168 Benchmark]: Toolchain (without parser) took 2507.91 ms. Allocated memory was 142.1 MB in the beginning and 235.9 MB in the end (delta: 93.8 MB). Free memory was 104.2 MB in the beginning and 166.2 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,124 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.41 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 104.0 MB in the beginning and 180.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,126 INFO L168 Benchmark]: Boogie Preprocessor took 62.82 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,126 INFO L168 Benchmark]: RCFGBuilder took 639.55 ms. Allocated memory is still 205.5 MB. Free memory was 177.4 MB in the beginning and 142.1 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,127 INFO L168 Benchmark]: TraceAbstraction took 1354.21 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 141.4 MB in the beginning and 166.2 MB in the end (delta: -24.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:03,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 446.41 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 104.0 MB in the beginning and 180.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.82 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 639.55 ms. Allocated memory is still 205.5 MB. Free memory was 177.4 MB in the beginning and 142.1 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1354.21 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 141.4 MB in the beginning and 166.2 MB in the end (delta: -24.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...