/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=BIGGEST --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:31:40,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:31:40,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:31:40,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:31:40,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:31:40,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:31:40,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:31:40,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:31:40,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:31:40,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:31:40,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:31:40,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:31:40,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:31:40,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:31:40,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:31:40,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:31:40,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:31:40,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:31:40,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:31:40,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:31:40,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:31:40,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:31:40,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:31:40,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:31:40,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:31:40,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:31:40,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:31:40,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:31:40,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:31:40,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:31:40,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:31:40,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:31:40,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:31:40,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:31:40,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:31:40,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:31:40,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:31:40,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:31:40,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:31:40,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:31:40,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:31:40,732 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 [2020-10-12 15:31:40,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:31:40,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:31:40,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:31:40,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:31:40,776 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:31:40,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:31:40,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:31:40,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:31:40,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:31:40,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:31:40,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:31:40,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:31:40,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:31:40,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:31:40,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:31:40,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:31:40,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:31:40,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:31:40,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:31:40,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:31:40,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:31:40,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:31:40,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:31:40,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:31:40,783 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:31:41,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:31:41,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:31:41,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:31:41,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:31:41,122 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:31:41,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-10-12 15:31:41,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7dd4472e/e453e0e12b5a4b15a8fd3095372731e4/FLAGfc9580423 [2020-10-12 15:31:41,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:31:41,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-10-12 15:31:41,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7dd4472e/e453e0e12b5a4b15a8fd3095372731e4/FLAGfc9580423 [2020-10-12 15:31:42,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7dd4472e/e453e0e12b5a4b15a8fd3095372731e4 [2020-10-12 15:31:42,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:31:42,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:31:42,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:42,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:31:42,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:31:42,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dee2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42, skipping insertion in model container [2020-10-12 15:31:42,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:31:42,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:31:42,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:42,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:31:42,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:42,293 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:31:42,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42 WrapperNode [2020-10-12 15:31:42,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:42,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:31:42,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:31:42,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:31:42,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (1/1) ... [2020-10-12 15:31:42,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:31:42,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:31:42,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:31:42,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:31:42,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (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 [2020-10-12 15:31:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:31:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:31:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-12 15:31:42,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-12 15:31:42,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:31:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:31:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-12 15:31:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-12 15:31:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:31:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:31:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:31:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:31:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:31:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:31:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:31:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:31:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:42,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:42,876 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 15:31:42,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:42 BoogieIcfgContainer [2020-10-12 15:31:42,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:42,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:42,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:42,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:42,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:31:42" (1/3) ... [2020-10-12 15:31:42,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b57e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:42, skipping insertion in model container [2020-10-12 15:31:42,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:42" (2/3) ... [2020-10-12 15:31:42,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b57e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:42, skipping insertion in model container [2020-10-12 15:31:42,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:42" (3/3) ... [2020-10-12 15:31:42,888 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-10-12 15:31:42,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:42,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:42,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:42,934 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:42,934 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:42,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:42,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:42,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:42,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:42,935 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:42,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-12 15:31:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:31:42,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:42,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:42,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:42,962 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-10-12 15:31:42,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:42,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182482625] [2020-10-12 15:31:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:43,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:31:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 15:31:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:31:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:31:43,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:43,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:43,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:43,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:31:43,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:31:43,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:43,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182482625] [2020-10-12 15:31:43,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:43,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:31:43,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927535559] [2020-10-12 15:31:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:31:43,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:31:43,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:31:43,291 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-12 15:31:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:43,483 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-10-12 15:31:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:31:43,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-12 15:31:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:43,497 INFO L225 Difference]: With dead ends: 76 [2020-10-12 15:31:43,497 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 15:31:43,501 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 [2020-10-12 15:31:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 15:31:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-12 15:31:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 15:31:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-12 15:31:43,544 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-10-12 15:31:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:43,545 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-12 15:31:43,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:31:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-10-12 15:31:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:31:43,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:43,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:43,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:43,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:43,548 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-10-12 15:31:43,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:43,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637958751] [2020-10-12 15:31:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:43,598 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:43,598 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:43,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:43,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:43 BoogieIcfgContainer [2020-10-12 15:31:43,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:43,630 INFO L168 Benchmark]: Toolchain (without parser) took 1610.99 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 104.4 MB in the end (delta: -404.3 kB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,631 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 148.4 MB. Free memory was 103.6 MB in the beginning and 92.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,633 INFO L168 Benchmark]: Boogie Preprocessor took 129.48 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 92.3 MB in the beginning and 181.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,634 INFO L168 Benchmark]: RCFGBuilder took 456.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 159.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,635 INFO L168 Benchmark]: TraceAbstraction took 745.90 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 104.4 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:43,639 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 148.4 MB. Free memory was 103.6 MB in the beginning and 92.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.48 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 92.3 MB in the beginning and 181.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 159.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 745.90 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 104.4 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...