/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:01,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:01,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:01,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:01,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:01,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:01,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:01,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:01,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:01,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:01,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:01,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:01,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:01,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:01,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:01,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:01,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:01,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:01,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:01,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:01,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:01,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:01,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:01,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:01,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:01,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:01,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:01,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:01,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:01,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:01,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:01,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:01,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:01,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:01,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:01,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:01,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:01,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:01,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:01,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:01,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:01,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:18:01,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:01,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:01,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:01,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:01,403 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:01,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:01,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:01,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:01,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:01,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:01,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:01,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:01,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:01,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:01,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:01,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:01,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:01,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:01,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:01,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:01,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:01,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:01,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:01,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:01,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:01,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:01,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:01,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:01,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:01,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:18:01,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:01,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:01,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:01,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:01,787 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:01,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662b.c [2020-10-13 10:18:01,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84a44cf7/99b46fd112244119b0d429841985d086/FLAG5d8c75a93 [2020-10-13 10:18:02,400 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:02,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0662b.c [2020-10-13 10:18:02,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84a44cf7/99b46fd112244119b0d429841985d086/FLAG5d8c75a93 [2020-10-13 10:18:02,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84a44cf7/99b46fd112244119b0d429841985d086 [2020-10-13 10:18:02,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:02,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:02,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:02,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:02,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:02,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:02" (1/1) ... [2020-10-13 10:18:02,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed7fd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:02, skipping insertion in model container [2020-10-13 10:18:02,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:02" (1/1) ... [2020-10-13 10:18:02,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:02,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:03,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:03,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:03,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:03,259 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:03,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03 WrapperNode [2020-10-13 10:18:03,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:03,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:03,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:03,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:03,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... [2020-10-13 10:18:03,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:03,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:03,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:03,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:03,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:18:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:18:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:18:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:18:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:04,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:04,044 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-13 10:18:04,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:04 BoogieIcfgContainer [2020-10-13 10:18:04,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:04,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:04,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:04,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:04,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:02" (1/3) ... [2020-10-13 10:18:04,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71087f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:04, skipping insertion in model container [2020-10-13 10:18:04,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:03" (2/3) ... [2020-10-13 10:18:04,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71087f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:04, skipping insertion in model container [2020-10-13 10:18:04,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:04" (3/3) ... [2020-10-13 10:18:04,059 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662b.c [2020-10-13 10:18:04,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:04,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:04,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:04,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:04,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:04,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:04,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:04,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:04,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:04,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:04,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-13 10:18:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:18:04,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:04,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:04,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:04,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:04,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-13 10:18:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:04,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838272424] [2020-10-13 10:18:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:04,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:04,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:18:04,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-13 10:18:04,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:18:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:04,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:18:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:18:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:04,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:18:04,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:18:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:04,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838272424] [2020-10-13 10:18:04,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:04,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:04,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351925860] [2020-10-13 10:18:04,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:04,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:04,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:04,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:04,855 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-13 10:18:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:05,257 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-13 10:18:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:18:05,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:18:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:05,272 INFO L225 Difference]: With dead ends: 200 [2020-10-13 10:18:05,272 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:18:05,277 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 [2020-10-13 10:18:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:18:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-13 10:18:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:18:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-13 10:18:05,334 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-13 10:18:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:05,335 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-13 10:18:05,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-13 10:18:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:18:05,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:05,337 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] [2020-10-13 10:18:05,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:05,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:05,338 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-13 10:18:05,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:05,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839060173] [2020-10-13 10:18:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:05,393 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:05,393 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:05,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:05,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:05 BoogieIcfgContainer [2020-10-13 10:18:05,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:05,421 INFO L168 Benchmark]: Toolchain (without parser) took 2669.16 ms. Allocated memory was 143.1 MB in the beginning and 231.7 MB in the end (delta: 88.6 MB). Free memory was 106.4 MB in the beginning and 118.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,422 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.79 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 106.2 MB in the beginning and 178.8 MB in the end (delta: -72.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,424 INFO L168 Benchmark]: Boogie Preprocessor took 72.32 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 175.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,425 INFO L168 Benchmark]: RCFGBuilder took 716.38 ms. Allocated memory is still 204.5 MB. Free memory was 175.7 MB in the beginning and 132.1 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,426 INFO L168 Benchmark]: TraceAbstraction took 1366.89 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 131.5 MB in the beginning and 118.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:05,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 507.79 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 106.2 MB in the beginning and 178.8 MB in the end (delta: -72.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.32 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 175.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 716.38 ms. Allocated memory is still 204.5 MB. Free memory was 175.7 MB in the beginning and 132.1 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1366.89 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 131.5 MB in the beginning and 118.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 260]: 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 259. 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; [L251] double x = 0.0; [L252] double y = __VERIFIER_nondet_double(); [L254] COND TRUE y < 0.0 [L256] 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; [L256] RET, EXPR __ieee754_atan2(y, x) [L256] double res = __ieee754_atan2(y, x); [L259] COND TRUE res != -pi_o_2 [L260] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 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...