/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:27:54,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:27:54,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:27:54,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:27:54,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:27:54,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:27:54,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:27:54,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:27:54,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:27:54,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:27:54,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:27:54,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:27:54,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:27:54,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:27:54,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:27:54,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:27:54,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:27:54,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:27:54,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:27:54,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:27:54,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:27:54,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:27:54,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:27:54,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:27:54,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:27:54,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:27:54,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:27:54,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:27:54,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:27:54,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:27:54,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:27:54,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:27:54,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:27:54,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:27:54,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:27:54,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:27:54,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:27:54,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:27:54,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:27:54,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:27:54,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:27:54,749 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 14:27:54,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:27:54,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:27:54,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:27:54,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:27:54,778 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:27:54,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:27:54,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:27:54,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:27:54,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:27:54,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:27:54,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:27:54,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:27:54,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:27:54,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:27:54,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:27:54,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:27:54,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:27:54,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:27:54,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:27:54,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:27:54,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:27:54,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:27:54,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:27:54,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:27:54,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:27:54,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:27:54,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:27:54,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:27:54,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:27:54,783 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 -> 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:27:55,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:27:55,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:27:55,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:27:55,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:27:55,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:27:55,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-09-25 14:27:55,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae880fea4/b721df3cd65444438687d5b8dec201bd/FLAGc5b252e9e [2020-09-25 14:27:55,994 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:27:55,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-09-25 14:27:56,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae880fea4/b721df3cd65444438687d5b8dec201bd/FLAGc5b252e9e [2020-09-25 14:27:56,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae880fea4/b721df3cd65444438687d5b8dec201bd [2020-09-25 14:27:56,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:27:56,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:27:56,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:27:56,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:27:56,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:27:56,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b090d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56, skipping insertion in model container [2020-09-25 14:27:56,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:27:56,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:27:56,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:27:56,673 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:27:56,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:27:56,736 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:27:56,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56 WrapperNode [2020-09-25 14:27:56,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:27:56,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:27:56,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:27:56,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:27:56,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (1/1) ... [2020-09-25 14:27:56,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:27:56,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:27:56,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:27:56,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:27:56,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (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 14:27:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:27:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:27:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 14:27:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-25 14:27:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:27:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:27:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 14:27:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-25 14:27:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:27:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 14:27:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:27:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:27:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:27:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 14:27:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:27:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:27:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:27:57,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:27:57,441 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 14:27:57,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:27:57 BoogieIcfgContainer [2020-09-25 14:27:57,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:27:57,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:27:57,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:27:57,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:27:57,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:27:56" (1/3) ... [2020-09-25 14:27:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a8872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:27:57, skipping insertion in model container [2020-09-25 14:27:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:56" (2/3) ... [2020-09-25 14:27:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a8872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:27:57, skipping insertion in model container [2020-09-25 14:27:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:27:57" (3/3) ... [2020-09-25 14:27:57,457 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-09-25 14:27:57,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:27:57,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:27:57,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:27:57,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:27:57,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:27:57,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:27:57,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:27:57,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:27:57,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:27:57,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:27:57,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:27:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 14:27:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:27:57,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:27:57,571 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] [2020-09-25 14:27:57,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:27:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:27:57,580 INFO L82 PathProgramCache]: Analyzing trace with hash 69005663, now seen corresponding path program 1 times [2020-09-25 14:27:57,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:27:57,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547472797] [2020-09-25 14:27:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:27:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:27:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:27:57,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:27:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:27:57,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:27:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 14:27:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:27:57,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:27:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:27:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:27:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:27:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:27:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:27:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:27:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:27:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:27:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:27:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:27:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:27:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:27:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:27:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:27:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:27:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:27:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:27:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:27:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:27:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:27:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:27:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:27:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:27:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:27:58,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:27:58,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:27:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:27:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:27:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:27:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:27:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:27:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:27:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:27:58,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:27:58,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:27:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:27:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:27:58,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:27:58,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:27:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:27:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:27:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:27:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:27:58,043 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 14:27:58,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547472797] [2020-09-25 14:27:58,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:27:58,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:27:58,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639708549] [2020-09-25 14:27:58,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:27:58,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:27:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:27:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:27:58,094 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-25 14:27:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:27:58,413 INFO L93 Difference]: Finished difference Result 162 states and 186 transitions. [2020-09-25 14:27:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:27:58,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 14:27:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:27:58,432 INFO L225 Difference]: With dead ends: 162 [2020-09-25 14:27:58,432 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 14:27:58,437 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 [2020-09-25 14:27:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 14:27:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 14:27:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 14:27:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 14:27:58,490 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 32 [2020-09-25 14:27:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:27:58,491 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 14:27:58,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:27:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 14:27:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:27:58,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:27:58,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:27:58,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:27:58,495 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:27:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:27:58,496 INFO L82 PathProgramCache]: Analyzing trace with hash -480977931, now seen corresponding path program 1 times [2020-09-25 14:27:58,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:27:58,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104035244] [2020-09-25 14:27:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:27:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:27:58,543 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:27:58,544 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:27:58,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:27:58,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:27:58 BoogieIcfgContainer [2020-09-25 14:27:58,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:27:58,580 INFO L168 Benchmark]: Toolchain (without parser) took 2230.11 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,581 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.91 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 91.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,583 INFO L168 Benchmark]: Boogie Preprocessor took 156.46 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 91.1 MB in the beginning and 181.3 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,584 INFO L168 Benchmark]: RCFGBuilder took 553.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,585 INFO L168 Benchmark]: TraceAbstraction took 1127.27 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 93.4 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:58,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.91 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 91.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.46 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 91.1 MB in the beginning and 181.3 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 553.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1127.27 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 93.4 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] 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; [L75] RET, EXPR round_double(x) [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) [L15] return x != x; [L78] RET, EXPR isnan_double(res) [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 17 SDslu, 67 SDs, 0 SdLazy, 98 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1612 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...