/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:57,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:57,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:57,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:57,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:57,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:57,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:57,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:57,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:57,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:57,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:57,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:57,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:57,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:57,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:57,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:57,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:57,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:57,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:57,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:57,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:57,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:57,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:57,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:57,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:57,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:57,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:57,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:57,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:57,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:57,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:57,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:57,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:57,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:57,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:57,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:57,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:57,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:57,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:57,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:57,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:57,537 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 15:30:57,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:57,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:57,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:57,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:57,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:57,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:57,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:57,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:57,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:57,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:57,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:57,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:57,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:57,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:57,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:57,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:57,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:57,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:57,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:57,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:57,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:57,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:57,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:57,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:57,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:57,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:57,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:57,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:57,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:57,567 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 15:30:57,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:57,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:57,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:57,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:57,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:57,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-12 15:30:57,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ac1c435/4cae16cbba1e4725a52004467fc71afa/FLAGeb773696c [2020-10-12 15:30:58,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:58,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-12 15:30:58,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ac1c435/4cae16cbba1e4725a52004467fc71afa/FLAGeb773696c [2020-10-12 15:30:58,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ac1c435/4cae16cbba1e4725a52004467fc71afa [2020-10-12 15:30:58,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:58,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:58,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:58,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:58,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:58,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ca2915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58, skipping insertion in model container [2020-10-12 15:30:58,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:58,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:59,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:59,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:59,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:59,340 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:59,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59 WrapperNode [2020-10-12 15:30:59,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:59,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:59,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:59,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:59,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (1/1) ... [2020-10-12 15:30:59,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:59,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:59,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:59,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:59,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (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 15:30:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:30:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-12 15:30:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-12 15:30:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-12 15:30:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:30:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:00,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:00,162 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 15:31:00,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:00 BoogieIcfgContainer [2020-10-12 15:31:00,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:00,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:00,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:00,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:58" (1/3) ... [2020-10-12 15:31:00,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703df3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:00, skipping insertion in model container [2020-10-12 15:31:00,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:59" (2/3) ... [2020-10-12 15:31:00,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703df3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:00, skipping insertion in model container [2020-10-12 15:31:00,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:00" (3/3) ... [2020-10-12 15:31:00,176 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681a.c [2020-10-12 15:31:00,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:00,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:00,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:00,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:00,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:00,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:00,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:00,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:00,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:00,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:00,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-10-12 15:31:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:31:00,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:00,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:00,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash -530639070, now seen corresponding path program 1 times [2020-10-12 15:31:00,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:00,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702534891] [2020-10-12 15:31:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:31:00,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-12 15:31:00,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:31:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:00,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:31:00,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:31:00,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:00,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702534891] [2020-10-12 15:31:00,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:00,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:31:00,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9592240] [2020-10-12 15:31:01,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:31:01,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:01,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:31:01,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:31:01,018 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-10-12 15:31:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:01,432 INFO L93 Difference]: Finished difference Result 212 states and 335 transitions. [2020-10-12 15:31:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:31:01,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 15:31:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:01,448 INFO L225 Difference]: With dead ends: 212 [2020-10-12 15:31:01,448 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 15:31:01,454 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 15:31:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 15:31:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-12 15:31:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 15:31:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 146 transitions. [2020-10-12 15:31:01,519 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 146 transitions. Word has length 19 [2020-10-12 15:31:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:01,520 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 146 transitions. [2020-10-12 15:31:01,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:31:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 146 transitions. [2020-10-12 15:31:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:31:01,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:01,522 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 15:31:01,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:01,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1749596857, now seen corresponding path program 1 times [2020-10-12 15:31:01,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:01,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303473126] [2020-10-12 15:31:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:01,589 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:01,589 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:01,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:01 BoogieIcfgContainer [2020-10-12 15:31:01,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:01,626 INFO L168 Benchmark]: Toolchain (without parser) took 2775.16 ms. Allocated memory was 142.1 MB in the beginning and 235.9 MB in the end (delta: 93.8 MB). Free memory was 102.8 MB in the beginning and 123.9 MB in the end (delta: -21.0 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,628 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.39 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 177.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,631 INFO L168 Benchmark]: Boogie Preprocessor took 78.24 ms. Allocated memory is still 203.4 MB. Free memory was 177.8 MB in the beginning and 174.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,632 INFO L168 Benchmark]: RCFGBuilder took 747.15 ms. Allocated memory is still 203.4 MB. Free memory was 174.4 MB in the beginning and 128.2 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,633 INFO L168 Benchmark]: TraceAbstraction took 1454.07 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 128.2 MB in the beginning and 123.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:01,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 489.39 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 177.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.24 ms. Allocated memory is still 203.4 MB. Free memory was 177.8 MB in the beginning and 174.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 747.15 ms. Allocated memory is still 203.4 MB. Free memory was 174.4 MB in the beginning and 128.2 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1454.07 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 128.2 MB in the beginning and 123.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 268]: 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 267. 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; [L263] double x = 0.0; [L264] double y = 0.0; [L265] 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; [L265] RET, EXPR __ieee754_atan2(y, x) [L265] double res = __ieee754_atan2(y, x); [L267] EXPR res == 0.0 && __signbit_double(res) == 0 [L267] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L268] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 110 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: 145 SDtfs, 10 SDslu, 134 SDs, 0 SdLazy, 145 SolverSat, 14 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=110occurred 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, 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...