/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:25:54,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:25:54,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:25:54,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:25:54,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:25:54,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:25:54,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:25:54,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:25:54,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:25:54,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:25:54,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:25:54,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:25:54,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:25:54,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:25:54,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:25:54,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:25:54,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:25:54,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:25:54,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:25:54,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:25:54,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:25:54,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:25:54,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:25:54,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:25:54,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:25:54,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:25:54,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:25:54,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:25:54,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:25:54,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:25:54,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:25:54,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:25:54,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:25:54,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:25:54,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:25:54,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:25:54,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:25:54,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:25:54,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:25:54,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:25:54,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:25:54,857 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 [2020-10-28 14:25:54,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:25:54,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:25:54,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:25:54,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:25:54,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:25:54,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:25:54,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:25:54,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:25:54,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:25:54,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:25:54,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:25:54,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:25:54,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:25:54,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:25:54,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:25:54,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:25:54,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:25:54,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:25:54,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:25:54,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:25:54,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:25:54,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:25:54,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:25:54,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:25:54,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:25:54,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:25:54,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:25:54,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:25:54,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:25:54,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:25:55,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:25:55,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:25:55,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:25:55,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:25:55,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:25:55,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-28 14:25:55,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7063f9dcc/7eb0ede7d52c4ab1ab008d7fea72c6a5/FLAG3926ff1c3 [2020-10-28 14:25:56,194 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:25:56,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-28 14:25:56,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7063f9dcc/7eb0ede7d52c4ab1ab008d7fea72c6a5/FLAG3926ff1c3 [2020-10-28 14:25:56,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7063f9dcc/7eb0ede7d52c4ab1ab008d7fea72c6a5 [2020-10-28 14:25:56,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:25:56,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:25:56,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:56,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:25:56,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:25:56,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7c3071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56, skipping insertion in model container [2020-10-28 14:25:56,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:25:56,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:25:56,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:56,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:25:56,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:56,717 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:25:56,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56 WrapperNode [2020-10-28 14:25:56,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:56,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:25:56,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:25:56,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:25:56,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (1/1) ... [2020-10-28 14:25:56,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:25:56,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:25:56,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:25:56,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:25:56,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (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 [2020-10-28 14:25:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:25:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:25:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:25:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:25:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:25:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-28 14:25:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:25:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:25:57,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:25:57,899 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-28 14:25:57,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:57 BoogieIcfgContainer [2020-10-28 14:25:57,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:25:57,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:25:57,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:25:57,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:25:57,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:25:56" (1/3) ... [2020-10-28 14:25:57,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea2001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:57, skipping insertion in model container [2020-10-28 14:25:57,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:56" (2/3) ... [2020-10-28 14:25:57,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea2001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:57, skipping insertion in model container [2020-10-28 14:25:57,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:57" (3/3) ... [2020-10-28 14:25:57,911 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2020-10-28 14:25:57,924 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:25:57,929 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:25:57,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:25:57,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:25:57,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:25:57,972 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:25:57,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:25:57,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:25:57,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:25:57,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:25:57,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:25:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-28 14:25:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:25:58,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:58,001 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] [2020-10-28 14:25:58,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash -809391335, now seen corresponding path program 1 times [2020-10-28 14:25:58,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:58,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72944275] [2020-10-28 14:25:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:25:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:58,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:25:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-28 14:25:58,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:58,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:25:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:25:58,739 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 14:25:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:25:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:25:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:25:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:25:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:58,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:25:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:25:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 14:25:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:25:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:25:58,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:58,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:25:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:25:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:25:58,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72944275] [2020-10-28 14:25:58,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:25:58,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:25:58,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724207886] [2020-10-28 14:25:58,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:25:58,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:25:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:25:59,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:25:59,005 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2020-10-28 14:25:59,208 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:25:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:25:59,800 INFO L93 Difference]: Finished difference Result 223 states and 348 transitions. [2020-10-28 14:25:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:25:59,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 14:25:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:25:59,816 INFO L225 Difference]: With dead ends: 223 [2020-10-28 14:25:59,816 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 14:25:59,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:25:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 14:25:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-28 14:25:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 14:25:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 148 transitions. [2020-10-28 14:25:59,940 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 148 transitions. Word has length 21 [2020-10-28 14:25:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:25:59,940 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 148 transitions. [2020-10-28 14:25:59,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:25:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 148 transitions. [2020-10-28 14:25:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:25:59,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:59,944 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, 1, 1] [2020-10-28 14:25:59,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:25:59,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:59,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:59,949 INFO L82 PathProgramCache]: Analyzing trace with hash 115837474, now seen corresponding path program 1 times [2020-10-28 14:25:59,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:59,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103600651] [2020-10-28 14:25:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:00,006 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:00,006 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:00,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:00,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:00 BoogieIcfgContainer [2020-10-28 14:26:00,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:00,032 INFO L168 Benchmark]: Toolchain (without parser) took 3790.56 ms. Allocated memory was 155.2 MB in the beginning and 190.8 MB in the end (delta: 35.7 MB). Free memory was 128.5 MB in the beginning and 84.8 MB in the end (delta: 43.7 MB). Peak memory consumption was 80.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:00,033 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:00,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.66 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 113.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:00,035 INFO L168 Benchmark]: Boogie Preprocessor took 91.51 ms. Allocated memory is still 155.2 MB. Free memory was 113.2 MB in the beginning and 110.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:00,036 INFO L168 Benchmark]: RCFGBuilder took 1088.63 ms. Allocated memory is still 155.2 MB. Free memory was 110.1 MB in the beginning and 100.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:00,037 INFO L168 Benchmark]: TraceAbstraction took 2126.40 ms. Allocated memory was 155.2 MB in the beginning and 190.8 MB in the end (delta: 35.7 MB). Free memory was 100.0 MB in the beginning and 84.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:00,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 465.66 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 113.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.51 ms. Allocated memory is still 155.2 MB. Free memory was 113.2 MB in the beginning and 110.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1088.63 ms. Allocated memory is still 155.2 MB. Free memory was 110.1 MB in the beginning and 100.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2126.40 ms. Allocated memory was 155.2 MB in the beginning and 190.8 MB in the end (delta: 35.7 MB). Free memory was 100.0 MB in the beginning and 84.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] 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, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L266] double x = __VERIFIER_nondet_double(); [L267] double y = 0.0; [L269] COND TRUE x > 0.0 [L270] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L270] RET, EXPR __ieee754_atan2(y, x) [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == 0.0 && __signbit_double(res) == 0 [L272] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L273] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0661b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 20 SDslu, 132 SDs, 0 SdLazy, 147 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 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...