/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:34,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:34,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:34,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:34,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:34,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:34,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:34,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:34,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:34,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:34,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:34,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:34,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:34,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:34,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:34,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:34,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:34,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:34,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:34,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:34,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:34,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:34,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:34,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:34,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:34,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:34,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:34,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:34,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:34,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:34,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:34,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:34,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:34,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:34,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:34,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:34,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:34,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:34,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:34,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:34,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:34,832 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 [2020-10-29 09:07:34,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:34,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:34,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:34,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:34,891 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:34,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:34,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:34,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:34,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:34,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:34,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:34,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:34,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:34,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:34,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:34,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:34,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:34,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:34,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:34,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:34,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:34,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:34,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:34,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:34,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:34,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:34,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:34,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:34,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:34,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:35,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:35,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:35,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:35,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:35,338 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:35,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-29 09:07:35,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cdf01b80/2bf5e46b2273493d96283ea39244a93c/FLAG16724dc06 [2020-10-29 09:07:35,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:35,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-29 09:07:36,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cdf01b80/2bf5e46b2273493d96283ea39244a93c/FLAG16724dc06 [2020-10-29 09:07:36,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cdf01b80/2bf5e46b2273493d96283ea39244a93c [2020-10-29 09:07:36,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:36,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:36,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:36,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:36,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:36,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc9a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36, skipping insertion in model container [2020-10-29 09:07:36,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:36,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:36,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:36,656 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:36,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:36,749 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:36,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36 WrapperNode [2020-10-29 09:07:36,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:36,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:36,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:36,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:36,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:36,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:36,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:36,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:36,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (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 [2020-10-29 09:07:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-29 09:07:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-29 09:07:36,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:07:36,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-29 09:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-29 09:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:37,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:37,638 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:07:37,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:37 BoogieIcfgContainer [2020-10-29 09:07:37,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:37,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:37,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:37,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:37,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:36" (1/3) ... [2020-10-29 09:07:37,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a6a70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:37, skipping insertion in model container [2020-10-29 09:07:37,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (2/3) ... [2020-10-29 09:07:37,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a6a70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:37, skipping insertion in model container [2020-10-29 09:07:37,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:37" (3/3) ... [2020-10-29 09:07:37,650 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-29 09:07:37,663 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:37,668 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:37,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:37,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:37,712 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:37,712 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:37,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:37,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:37,713 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:37,713 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:37,713 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-29 09:07:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:07:37,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:37,741 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] [2020-10-29 09:07:37,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1163153451, now seen corresponding path program 1 times [2020-10-29 09:07:37,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:37,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833298893] [2020-10-29 09:07:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:07:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-29 09:07:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 09:07:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:07:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:07:38,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:07:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 09:07:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:07:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:07:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:07:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:07:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:07:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:07:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:38,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833298893] [2020-10-29 09:07:38,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:38,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:38,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233774753] [2020-10-29 09:07:38,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:38,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:38,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:38,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:38,805 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2020-10-29 09:07:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:39,157 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-10-29 09:07:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:39,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 09:07:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:39,171 INFO L225 Difference]: With dead ends: 88 [2020-10-29 09:07:39,171 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:07:39,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:07:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:07:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 09:07:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:07:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 09:07:39,232 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 23 [2020-10-29 09:07:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:39,233 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 09:07:39,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 09:07:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:07:39,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:39,236 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, 1, 1] [2020-10-29 09:07:39,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:39,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1625087789, now seen corresponding path program 1 times [2020-10-29 09:07:39,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:39,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655879053] [2020-10-29 09:07:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:39,283 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:39,283 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:39,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:39,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:39 BoogieIcfgContainer [2020-10-29 09:07:39,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:39,309 INFO L168 Benchmark]: Toolchain (without parser) took 2924.54 ms. Allocated memory is still 164.6 MB. Free memory was 139.9 MB in the beginning and 56.8 MB in the end (delta: 83.1 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,310 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 164.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:39,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.98 ms. Allocated memory is still 164.6 MB. Free memory was 139.4 MB in the beginning and 128.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,312 INFO L168 Benchmark]: Boogie Preprocessor took 57.11 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,313 INFO L168 Benchmark]: RCFGBuilder took 831.03 ms. Allocated memory is still 164.6 MB. Free memory was 127.0 MB in the beginning and 143.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,314 INFO L168 Benchmark]: TraceAbstraction took 1664.75 ms. Allocated memory is still 164.6 MB. Free memory was 143.8 MB in the beginning and 56.8 MB in the end (delta: 87.0 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 164.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.98 ms. Allocated memory is still 164.6 MB. Free memory was 139.4 MB in the beginning and 128.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.11 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 831.03 ms. Allocated memory is still 164.6 MB. Free memory was 127.0 MB in the beginning and 143.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1664.75 ms. Allocated memory is still 164.6 MB. Free memory was 143.8 MB in the beginning and 56.8 MB in the end (delta: 87.0 MB). Peak memory consumption was 87.0 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 someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 10 SDslu, 119 SDs, 0 SdLazy, 71 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1848 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...