/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_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:25:52,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:25:52,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:25:52,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:25:52,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:25:52,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:25:52,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:25:52,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:25:52,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:25:52,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:25:52,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:25:52,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:25:52,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:25:52,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:25:52,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:25:52,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:25:52,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:25:52,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:25:52,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:25:52,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:25:52,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:25:52,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:25:52,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:25:52,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:25:52,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:25:52,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:25:52,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:25:52,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:25:52,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:25:52,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:25:52,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:25:52,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:25:52,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:25:52,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:25:52,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:25:52,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:25:52,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:25:52,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:25:52,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:25:52,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:25:52,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:25:52,154 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 14:25:52,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:25:52,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:25:52,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:25:52,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:25:52,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:25:52,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:25:52,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:25:52,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:25:52,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:25:52,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:25:52,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:25:52,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:25:52,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:25:52,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:25:52,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:25:52,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:25:52,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:25:52,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:25:52,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:25:52,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:25:52,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:25:52,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:25:52,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:25:52,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:25:52,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:25:52,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:25:52,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:25:52,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:25:52,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:25:52,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:25:52,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660a.c [2020-10-28 14:25:52,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494b4ce75/a5bcbc85dff8453b93626eb57a8dd8e4/FLAG8a20c9ebe [2020-10-28 14:25:53,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:25:53,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0660a.c [2020-10-28 14:25:53,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494b4ce75/a5bcbc85dff8453b93626eb57a8dd8e4/FLAG8a20c9ebe [2020-10-28 14:25:53,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494b4ce75/a5bcbc85dff8453b93626eb57a8dd8e4 [2020-10-28 14:25:53,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:25:53,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:25:53,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:53,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:25:53,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:25:53,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:53" (1/1) ... [2020-10-28 14:25:53,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61790b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:53, skipping insertion in model container [2020-10-28 14:25:53,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:53" (1/1) ... [2020-10-28 14:25:53,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:25:53,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:25:53,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:53,921 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:25:53,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:54,000 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:25:54,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54 WrapperNode [2020-10-28 14:25:54,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:54,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:25:54,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:25:54,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:25:54,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (1/1) ... [2020-10-28 14:25:54,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:25:54,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:25:54,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:25:54,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:25:54,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (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 14:25:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:25:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:25:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:25:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:25:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:25:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-28 14:25:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:25:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:25:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:25:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:25:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:25:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:25:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:25:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:25:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-28 14:25:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:25:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:25:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:25:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:25:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:25:54,920 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:25:54,921 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-28 14:25:54,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:54 BoogieIcfgContainer [2020-10-28 14:25:54,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:25:54,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:25:54,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:25:54,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:25:54,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:25:53" (1/3) ... [2020-10-28 14:25:54,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86351c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:54, skipping insertion in model container [2020-10-28 14:25:54,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:54" (2/3) ... [2020-10-28 14:25:54,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86351c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:54, skipping insertion in model container [2020-10-28 14:25:54,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:54" (3/3) ... [2020-10-28 14:25:54,931 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2020-10-28 14:25:54,942 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:25:54,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:25:54,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:25:54,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:25:54,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:25:54,987 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:25:54,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:25:54,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:25:54,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:25:54,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:25:54,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:25:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-10-28 14:25:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:25:55,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:55,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:25:55,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 199039736, now seen corresponding path program 1 times [2020-10-28 14:25:55,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:55,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792704835] [2020-10-28 14:25:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:25:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:55,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:55,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:25:55,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 14:25:55,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:55,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:25:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:25:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:25:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:55,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:25:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:25:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:25:55,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:55,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:25:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:25:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 14:25:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:55,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:55,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:25:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:25:55,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:55,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:25:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:25:55,806 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 14:25:55,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792704835] [2020-10-28 14:25:55,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:25:55,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:25:55,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925968053] [2020-10-28 14:25:55,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:25:55,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:25:55,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:25:55,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:25:55,833 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2020-10-28 14:25:55,970 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:25:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:25:56,336 INFO L93 Difference]: Finished difference Result 205 states and 323 transitions. [2020-10-28 14:25:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:25:56,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:25:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:25:56,349 INFO L225 Difference]: With dead ends: 205 [2020-10-28 14:25:56,349 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 14:25:56,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:25:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 14:25:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-28 14:25:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:25:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-10-28 14:25:56,408 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 20 [2020-10-28 14:25:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:25:56,409 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-10-28 14:25:56,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:25:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-10-28 14:25:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:25:56,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:56,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:25:56,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:25:56,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1527493777, now seen corresponding path program 1 times [2020-10-28 14:25:56,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:56,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384348925] [2020-10-28 14:25:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:25:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:25:56,493 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:25:56,494 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:25:56,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:25:56,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:25:56 BoogieIcfgContainer [2020-10-28 14:25:56,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:25:56,518 INFO L168 Benchmark]: Toolchain (without parser) took 2909.97 ms. Allocated memory was 169.9 MB in the beginning and 216.0 MB in the end (delta: 46.1 MB). Free memory was 144.4 MB in the beginning and 128.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 62.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:56,519 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 169.9 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:25:56,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.18 ms. Allocated memory is still 169.9 MB. Free memory was 143.8 MB in the beginning and 129.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:56,521 INFO L168 Benchmark]: Boogie Preprocessor took 91.78 ms. Allocated memory is still 169.9 MB. Free memory was 129.2 MB in the beginning and 126.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:56,521 INFO L168 Benchmark]: RCFGBuilder took 828.58 ms. Allocated memory is still 169.9 MB. Free memory was 126.2 MB in the beginning and 118.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:56,522 INFO L168 Benchmark]: TraceAbstraction took 1591.91 ms. Allocated memory was 169.9 MB in the beginning and 216.0 MB in the end (delta: 46.1 MB). Free memory was 117.8 MB in the beginning and 128.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:56,526 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 169.9 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 381.18 ms. Allocated memory is still 169.9 MB. Free memory was 143.8 MB in the beginning and 129.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.78 ms. Allocated memory is still 169.9 MB. Free memory was 129.2 MB in the beginning and 126.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 828.58 ms. Allocated memory is still 169.9 MB. Free memory was 126.2 MB in the beginning and 118.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1591.91 ms. Allocated memory was 169.9 MB in the beginning and 216.0 MB in the end (delta: 46.1 MB). Free memory was 117.8 MB in the beginning and 128.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 36.1 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 253, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 260. 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; [L252] double x = __VERIFIER_nondet_double(); [L253] double y = -0.0; [L255] COND TRUE x < 0.0 [L257] 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; [L257] RET, EXPR __ieee754_atan2(y, x) [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != -pi [L261] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0660a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 18 SDslu, 124 SDs, 0 SdLazy, 138 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred 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, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...