/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_0660b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:48,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:48,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:48,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:48,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:48,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:48,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:48,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:48,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:48,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:48,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:48,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:48,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:48,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:48,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:48,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:48,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:48,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:48,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:48,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:48,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:48,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:48,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:48,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:48,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:48,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:48,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:48,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:48,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:48,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:48,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:48,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:48,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:48,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:48,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:48,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:48,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:48,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:48,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:48,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:48,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:48,927 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 15:30:48,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:48,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:48,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:48,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:48,975 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:48,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:48,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:48,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:48,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:48,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:48,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:48,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:48,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:48,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:48,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:48,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:48,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:48,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:48,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:48,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:48,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:48,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:48,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:48,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:48,984 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 15:30:49,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:49,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:49,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:49,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:49,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:49,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-12 15:30:49,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb734e2/5a760b4cf17542fe82227c65196dd841/FLAG142c893b9 [2020-10-12 15:30:49,851 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:49,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-12 15:30:49,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb734e2/5a760b4cf17542fe82227c65196dd841/FLAG142c893b9 [2020-10-12 15:30:50,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94eb734e2/5a760b4cf17542fe82227c65196dd841 [2020-10-12 15:30:50,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:50,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:50,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:50,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:50,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:50,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e065585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50, skipping insertion in model container [2020-10-12 15:30:50,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:50,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:50,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:50,443 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:50,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:50,614 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:50,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50 WrapperNode [2020-10-12 15:30:50,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:50,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:50,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:50,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:50,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (1/1) ... [2020-10-12 15:30:50,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:50,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:50,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:50,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:50,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (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 15:30:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:30:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-12 15:30:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:30:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:30:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:30:51,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:30:51,429 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-12 15:30:51,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:51 BoogieIcfgContainer [2020-10-12 15:30:51,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:30:51,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:30:51,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:30:51,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:30:51,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:50" (1/3) ... [2020-10-12 15:30:51,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43aee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:51, skipping insertion in model container [2020-10-12 15:30:51,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:50" (2/3) ... [2020-10-12 15:30:51,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43aee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:51, skipping insertion in model container [2020-10-12 15:30:51,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:51" (3/3) ... [2020-10-12 15:30:51,445 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2020-10-12 15:30:51,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:30:51,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:30:51,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:30:51,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:30:51,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:30:51,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:30:51,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:30:51,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:30:51,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:30:51,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:30:51,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:30:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-12 15:30:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:30:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:51,545 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 15:30:51,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:51,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-12 15:30:51,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:51,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369755249] [2020-10-12 15:30:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:52,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:30:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 15:30:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:30:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:52,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:30:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:30:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:52,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:30:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:30:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 15:30:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:30:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:30:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 15:30:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:52,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:52,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:30:52,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:30:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:30:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:30:52,288 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 15:30:52,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369755249] [2020-10-12 15:30:52,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:30:52,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:30:52,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778695868] [2020-10-12 15:30:52,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:30:52,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:30:52,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:30:52,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:30:52,315 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-12 15:30:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:30:52,713 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-12 15:30:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:30:52,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 15:30:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:30:52,728 INFO L225 Difference]: With dead ends: 200 [2020-10-12 15:30:52,728 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 15:30:52,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:30:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 15:30:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-12 15:30:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:30:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-12 15:30:52,792 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-12 15:30:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:30:52,792 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-12 15:30:52,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:30:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-12 15:30:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:30:52,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:52,794 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] [2020-10-12 15:30:52,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:30:52,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-12 15:30:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373482457] [2020-10-12 15:30:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:30:52,865 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:30:52,866 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:30:52,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:30:52,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:30:52 BoogieIcfgContainer [2020-10-12 15:30:52,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:30:52,900 INFO L168 Benchmark]: Toolchain (without parser) took 2732.83 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 102.1 MB in the beginning and 127.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,902 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.42 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 175.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,905 INFO L168 Benchmark]: Boogie Preprocessor took 74.64 ms. Allocated memory is still 201.3 MB. Free memory was 175.6 MB in the beginning and 172.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,906 INFO L168 Benchmark]: RCFGBuilder took 744.17 ms. Allocated memory is still 201.3 MB. Free memory was 172.2 MB in the beginning and 129.1 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,908 INFO L168 Benchmark]: TraceAbstraction took 1460.66 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 128.4 MB in the beginning and 127.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:52,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 448.42 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 175.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.64 ms. Allocated memory is still 201.3 MB. Free memory was 175.6 MB in the beginning and 172.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 744.17 ms. Allocated memory is still 201.3 MB. Free memory was 172.2 MB in the beginning and 129.1 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1460.66 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 128.4 MB in the beginning and 127.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 259]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 258. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L250] double x = __VERIFIER_nondet_double(); [L251] double y = 0.0; [L253] COND TRUE x < 0.0 [L255] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L258] COND TRUE res != pi [L259] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 16 SDslu, 125 SDs, 0 SdLazy, 139 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...