/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_0621b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:46,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:46,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:47,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:47,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:47,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:47,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:47,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:47,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:47,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:47,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:47,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:47,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:47,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:47,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:47,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:47,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:47,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:47,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:47,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:47,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:47,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:47,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:47,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:47,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:47,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:47,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:47,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:47,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:47,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:47,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:47,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:47,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:47,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:47,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:47,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:47,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:47,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:47,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:47,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:47,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:47,119 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 15:30:47,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:47,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:47,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:47,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:47,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:47,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:47,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:47,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:47,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:47,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:47,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:47,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:47,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:47,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:47,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:47,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:47,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:47,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:47,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:47,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:47,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:47,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:47,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:47,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:47,165 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 15:30:47,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:47,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:47,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:47,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:47,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:47,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0621b.c [2020-10-12 15:30:47,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f05f594/b8bf3619b6f4460ba03d89f5a1dc56d9/FLAG392780a65 [2020-10-12 15:30:48,028 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:48,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0621b.c [2020-10-12 15:30:48,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f05f594/b8bf3619b6f4460ba03d89f5a1dc56d9/FLAG392780a65 [2020-10-12 15:30:48,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f05f594/b8bf3619b6f4460ba03d89f5a1dc56d9 [2020-10-12 15:30:48,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:48,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:48,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:48,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:48,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:48,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569e4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48, skipping insertion in model container [2020-10-12 15:30:48,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:48,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:48,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:48,683 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:48,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:48,862 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:48,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48 WrapperNode [2020-10-12 15:30:48,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:48,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:48,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:48,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:48,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (1/1) ... [2020-10-12 15:30:48,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:48,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:48,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:48,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:48,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (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 15:30:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:30:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:30:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:30:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:30:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:30:49,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:30:49,429 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-12 15:30:49,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:49 BoogieIcfgContainer [2020-10-12 15:30:49,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:30:49,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:30:49,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:30:49,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:30:49,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:48" (1/3) ... [2020-10-12 15:30:49,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4f8b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:49, skipping insertion in model container [2020-10-12 15:30:49,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:48" (2/3) ... [2020-10-12 15:30:49,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4f8b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:49, skipping insertion in model container [2020-10-12 15:30:49,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:49" (3/3) ... [2020-10-12 15:30:49,441 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2020-10-12 15:30:49,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:30:49,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:30:49,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:30:49,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:30:49,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:30:49,496 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:30:49,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:30:49,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:30:49,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:30:49,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:30:49,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:30:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-12 15:30:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:30:49,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:49,522 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 15:30:49,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash 253536521, now seen corresponding path program 1 times [2020-10-12 15:30:49,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:49,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944224141] [2020-10-12 15:30:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:50,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:50,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:30:50,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 15:30:50,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:30:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:30:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:30:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:50,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:50,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:30:50,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:30:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:30:50,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:30:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:30:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:30:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:30:50,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:30:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:30:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:30:50,278 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 15:30:50,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944224141] [2020-10-12 15:30:50,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:30:50,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:30:50,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989881432] [2020-10-12 15:30:50,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:30:50,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:30:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:30:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:30:50,308 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-12 15:30:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:30:50,576 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2020-10-12 15:30:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:30:50,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-12 15:30:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:30:50,588 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:30:50,588 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 15:30:50,592 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 15:30:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 15:30:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-12 15:30:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:30:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-12 15:30:50,637 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 18 [2020-10-12 15:30:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:30:50,638 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-12 15:30:50,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:30:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-12 15:30:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:30:50,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:50,639 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] [2020-10-12 15:30:50,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:30:50,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash -249533049, now seen corresponding path program 1 times [2020-10-12 15:30:50,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:50,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444263469] [2020-10-12 15:30:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:30:50,685 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:30:50,685 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:30:50,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:30:50,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:30:50 BoogieIcfgContainer [2020-10-12 15:30:50,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:30:50,712 INFO L168 Benchmark]: Toolchain (without parser) took 2307.53 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.8 MB in the beginning and 178.8 MB in the end (delta: -75.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,713 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.27 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 180.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,715 INFO L168 Benchmark]: Boogie Preprocessor took 54.93 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,715 INFO L168 Benchmark]: RCFGBuilder took 514.86 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 151.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,716 INFO L168 Benchmark]: TraceAbstraction took 1274.20 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 151.4 MB in the beginning and 178.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:50,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.27 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 180.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.93 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 514.86 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 151.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1274.20 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 151.4 MB in the beginning and 178.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 82, overapproximation of bitwiseAnd at line 73, overapproximation of someBinaryDOUBLEComparisonOperation at line 144. 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; [L141] double x = -1.0 / 0.0; [L142] CALL, EXPR atan_double(x) [L65] double w, s1, s2, z; [L66] __int32_t ix, hx, id; [L69] ieee_double_shape_type gh_u; [L70] gh_u.value = (x) [L71] EXPR gh_u.parts.msw [L71] (hx) = gh_u.parts.msw [L73] ix = hx & 0x7fffffff [L74] COND TRUE ix >= 0x44100000 [L75] __uint32_t low; [L77] ieee_double_shape_type gl_u; [L78] gl_u.value = (x) [L79] EXPR gl_u.parts.lsw [L79] (low) = gl_u.parts.lsw [L81] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L82] return x + x; [L142] RET, EXPR atan_double(x) [L142] double res = atan_double(x); [L144] COND TRUE res != -pi_o_2 [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 6 SDslu, 48 SDs, 0 SdLazy, 55 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1258 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...