/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=SHALLOWEST --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_0490b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:07,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:07,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:07,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:07,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:07,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:07,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:07,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:07,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:07,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:07,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:07,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:07,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:07,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:07,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:07,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:07,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:07,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:07,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:07,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:07,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:07,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:07,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:07,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:07,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:07,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:07,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:07,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:07,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:07,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:07,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:07,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:07,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:07,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:07,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:07,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:07,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:07,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:07,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:07,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:07,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:07,679 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 [2020-10-27 01:01:07,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:07,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:07,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:07,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:07,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:07,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:07,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:07,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:07,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:07,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:07,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:07,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:07,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:07,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:07,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:07,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:07,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:07,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:07,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:07,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:07,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:07,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:07,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:07,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:08,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:08,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:08,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:08,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:08,173 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:08,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0490b.c [2020-10-27 01:01:08,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bab16c4/52969508cf6f4916885a20164f5172b7/FLAG85a826e1e [2020-10-27 01:01:08,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:08,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0490b.c [2020-10-27 01:01:08,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bab16c4/52969508cf6f4916885a20164f5172b7/FLAG85a826e1e [2020-10-27 01:01:09,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bab16c4/52969508cf6f4916885a20164f5172b7 [2020-10-27 01:01:09,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:09,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:09,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:09,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:09,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:09,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1219ad88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09, skipping insertion in model container [2020-10-27 01:01:09,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:09,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:09,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:09,581 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:09,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:09,696 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:09,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09 WrapperNode [2020-10-27 01:01:09,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:09,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:09,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:09,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:09,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (1/1) ... [2020-10-27 01:01:09,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:09,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:09,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:09,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:09,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (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 [2020-10-27 01:01:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-27 01:01:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-27 01:01:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acos [2020-10-27 01:01:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-27 01:01:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-27 01:01:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acos [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:10,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:10,821 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:01:10,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:10 BoogieIcfgContainer [2020-10-27 01:01:10,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:10,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:10,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:10,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:10,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:09" (1/3) ... [2020-10-27 01:01:10,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1c524a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:10, skipping insertion in model container [2020-10-27 01:01:10,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:09" (2/3) ... [2020-10-27 01:01:10,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1c524a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:10, skipping insertion in model container [2020-10-27 01:01:10,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:10" (3/3) ... [2020-10-27 01:01:10,834 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0490b.c [2020-10-27 01:01:10,846 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:10,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:10,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:10,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:10,896 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:10,896 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:10,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:10,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:10,897 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:10,897 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:10,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-27 01:01:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:01:10,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:10,928 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, 1] [2020-10-27 01:01:10,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash -59958596, now seen corresponding path program 1 times [2020-10-27 01:01:10,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:10,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657352394] [2020-10-27 01:01:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:01:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 01:01:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:01:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:01:11,629 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:01:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:11,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:11,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:01:11,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:01:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:11,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:01:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 01:01:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:11,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:11,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:11,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:11,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:01:11,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:11,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:11,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:01:11,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:11,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657352394] [2020-10-27 01:01:11,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:11,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:11,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885479954] [2020-10-27 01:01:11,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:11,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:11,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:11,768 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-10-27 01:01:11,961 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 01:01:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:12,427 INFO L93 Difference]: Finished difference Result 163 states and 248 transitions. [2020-10-27 01:01:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:12,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 01:01:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:12,441 INFO L225 Difference]: With dead ends: 163 [2020-10-27 01:01:12,442 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 01:01:12,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 01:01:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-27 01:01:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 01:01:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2020-10-27 01:01:12,506 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 24 [2020-10-27 01:01:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:12,507 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2020-10-27 01:01:12,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2020-10-27 01:01:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:01:12,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:12,510 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, 1, 1] [2020-10-27 01:01:12,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:12,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:12,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2111311509, now seen corresponding path program 1 times [2020-10-27 01:01:12,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:12,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145554913] [2020-10-27 01:01:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:12,581 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:12,581 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:12,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:12 BoogieIcfgContainer [2020-10-27 01:01:12,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:12,616 INFO L168 Benchmark]: Toolchain (without parser) took 3406.22 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 101.1 MB in the beginning and 116.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:12,617 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:12,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.08 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 85.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:12,620 INFO L168 Benchmark]: Boogie Preprocessor took 102.19 ms. Allocated memory is still 125.8 MB. Free memory was 85.8 MB in the beginning and 83.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:12,621 INFO L168 Benchmark]: RCFGBuilder took 1021.66 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 83.1 MB in the beginning and 123.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:12,623 INFO L168 Benchmark]: TraceAbstraction took 1786.74 ms. Allocated memory is still 168.8 MB. Free memory was 123.1 MB in the beginning and 116.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:12,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 482.08 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 85.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.19 ms. Allocated memory is still 125.8 MB. Free memory was 85.8 MB in the beginning and 83.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1021.66 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 83.1 MB in the beginning and 123.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1786.74 ms. Allocated memory is still 168.8 MB. Free memory was 123.1 MB in the beginning and 116.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.5 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 someUnaryDOUBLEoperation at line 138, overapproximation of someBinaryArithmeticDOUBLEoperation at line 174, overapproximation of bitwiseAnd at line 156, overapproximation of someBinaryDOUBLEComparisonOperation at line 19. Possible FailurePath: [L21] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L133-L146] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; [L225] double x = -1.0 / 0.0; [L226] CALL, EXPR __ieee754_acos(x) [L149] double z, p, q, r, w, s, c, df; [L150] __int32_t hx, ix; [L152] ieee_double_shape_type gh_u; [L153] gh_u.value = (x) [L154] EXPR gh_u.parts.msw [L154] (hx) = gh_u.parts.msw [L156] ix = hx & 0x7fffffff [L157] COND FALSE !(ix >= 0x3ff00000) [L172] COND TRUE ix < 0x3fe00000 [L173] COND TRUE ix <= 0x3c600000 [L174] return pio2_hi_acos + pio2_lo_acos; [L226] RET, EXPR __ieee754_acos(x) [L226] double res = __ieee754_acos(x); [L229] CALL, EXPR isnan_double(res) [L19] return x != x; [L229] RET, EXPR isnan_double(res) [L229] COND TRUE !isnan_double(res) [L230] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0490b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 12 SDslu, 94 SDs, 0 SdLazy, 103 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2599 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...