/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_0660b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:17:55,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:17:55,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:17:55,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:17:55,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:17:55,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:17:55,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:17:55,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:17:55,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:17:55,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:17:55,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:17:55,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:17:55,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:17:55,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:17:55,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:17:55,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:17:55,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:17:55,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:17:55,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:17:55,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:17:55,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:17:55,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:17:55,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:17:55,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:17:55,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:17:55,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:17:55,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:17:55,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:17:55,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:17:55,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:17:55,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:17:55,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:17:55,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:17:55,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:17:55,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:17:55,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:17:55,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:17:55,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:17:55,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:17:55,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:17:55,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:17:55,735 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 10:17:55,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:17:55,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:17:55,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:17:55,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:17:55,760 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:17:55,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:17:55,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:17:55,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:17:55,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:17:55,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:17:55,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:17:55,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:17:55,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:17:55,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:17:55,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:17:55,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:17:55,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:17:55,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:17:55,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:17:55,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:17:55,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:17:55,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:17:55,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:17:55,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:17:55,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:17:55,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:17:55,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:17:55,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:17:55,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:17:55,765 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 10:17:56,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:17:56,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:17:56,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:17:56,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:17:56,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:17:56,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-13 10:17:56,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f776984c/8819a1be9cd145199f2506c4445de943/FLAGe73948ee6 [2020-10-13 10:17:56,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:17:56,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-13 10:17:56,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f776984c/8819a1be9cd145199f2506c4445de943/FLAGe73948ee6 [2020-10-13 10:17:57,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f776984c/8819a1be9cd145199f2506c4445de943 [2020-10-13 10:17:57,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:17:57,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:17:57,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:17:57,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:17:57,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:17:57,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57, skipping insertion in model container [2020-10-13 10:17:57,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:17:57,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:17:57,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:17:57,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:17:57,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:17:57,522 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:17:57,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57 WrapperNode [2020-10-13 10:17:57,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:17:57,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:17:57,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:17:57,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:17:57,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (1/1) ... [2020-10-13 10:17:57,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:17:57,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:17:57,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:17:57,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:17:57,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (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 10:17:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:17:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:17:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:17:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:17:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:17:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:17:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:17:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:17:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:17:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:17:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:17:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:17:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:17:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:17:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:17:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:17:58,299 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:17:58,299 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-13 10:17:58,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:17:58 BoogieIcfgContainer [2020-10-13 10:17:58,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:17:58,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:17:58,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:17:58,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:17:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:17:57" (1/3) ... [2020-10-13 10:17:58,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd7b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:17:58, skipping insertion in model container [2020-10-13 10:17:58,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:57" (2/3) ... [2020-10-13 10:17:58,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd7b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:17:58, skipping insertion in model container [2020-10-13 10:17:58,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:17:58" (3/3) ... [2020-10-13 10:17:58,315 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2020-10-13 10:17:58,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:17:58,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:17:58,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:17:58,376 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:17:58,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:17:58,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:17:58,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:17:58,377 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:17:58,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:17:58,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:17:58,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:17:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-13 10:17:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:17:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:17:58,410 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 10:17:58,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:17:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:17:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-13 10:17:58,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:17:58,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308934582] [2020-10-13 10:17:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:17:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:58,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:17:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:17:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-13 10:17:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:17:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:17:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:17:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:59,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:59,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:17:59,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:17:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 10:17:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:17:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:17:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:59,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:59,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:17:59,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:17:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:17:59,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:17:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:59,141 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 10:17:59,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308934582] [2020-10-13 10:17:59,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:17:59,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:17:59,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423359311] [2020-10-13 10:17:59,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:17:59,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:17:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:17:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:17:59,168 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-13 10:17:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:17:59,566 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-13 10:17:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:17:59,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:17:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:17:59,580 INFO L225 Difference]: With dead ends: 200 [2020-10-13 10:17:59,580 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:17:59,585 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 10:17:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:17:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-13 10:17:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:17:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-13 10:17:59,646 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-13 10:17:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:17:59,650 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-13 10:17:59,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:17:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-13 10:17:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:17:59,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:17:59,652 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 10:17:59,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:17:59,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:17:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:17:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-13 10:17:59,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:17:59,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299324171] [2020-10-13 10:17:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:17:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:17:59,709 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:17:59,709 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:17:59,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:17:59,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:17:59 BoogieIcfgContainer [2020-10-13 10:17:59,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:17:59,737 INFO L168 Benchmark]: Toolchain (without parser) took 2697.79 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 100.3 MB in the beginning and 129.6 MB in the end (delta: -29.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,738 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.90 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.1 MB in the beginning and 176.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,740 INFO L168 Benchmark]: Boogie Preprocessor took 72.16 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 172.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,741 INFO L168 Benchmark]: RCFGBuilder took 709.04 ms. Allocated memory is still 201.9 MB. Free memory was 172.9 MB in the beginning and 129.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,742 INFO L168 Benchmark]: TraceAbstraction took 1427.55 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 128.5 MB in the beginning and 129.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:59,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 483.90 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.1 MB in the beginning and 176.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.16 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 172.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 709.04 ms. Allocated memory is still 201.9 MB. Free memory was 172.9 MB in the beginning and 129.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1427.55 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 128.5 MB in the beginning and 129.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 259]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 258. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L250] double x = __VERIFIER_nondet_double(); [L251] double y = 0.0; [L253] COND TRUE x < 0.0 [L255] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L258] COND TRUE res != pi [L259] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 16 SDslu, 125 SDs, 0 SdLazy, 139 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s 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...