./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/nan_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/nan_double.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e70fb0031ee54295dcc583b462c02b21fc0481d0 .................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/nan_double.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e70fb0031ee54295dcc583b462c02b21fc0481d0 ......................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 14:38:23,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:38:23,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:38:23,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:38:23,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:38:23,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:38:23,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:38:24,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:38:24,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:38:24,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:38:24,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:38:24,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:38:24,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:38:24,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:38:24,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:38:24,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:38:24,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:38:24,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:38:24,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:38:24,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:38:24,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:38:24,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:38:24,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:38:24,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:38:24,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:38:24,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:38:24,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:38:24,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:38:24,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:38:24,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:38:24,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:38:24,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:38:24,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:38:24,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:38:24,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:38:24,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:38:24,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:38:24,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:38:24,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:38:24,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:38:24,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:38:24,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:38:24,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:38:24,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:38:24,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:38:24,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:38:24,155 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:38:24,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:38:24,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:38:24,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:38:24,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:38:24,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:38:24,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:38:24,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:38:24,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:38:24,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:38:24,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:38:24,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:38:24,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:38:24,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:38:24,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:38:24,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:38:24,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:38:24,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:38:24,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:38:24,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:38:24,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:38:24,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:38:24,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:38:24,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:38:24,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:38:24,162 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2020-12-02 14:38:24,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:38:24,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:38:24,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:38:24,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:38:24,586 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:38:24,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/nan_double.c [2020-12-02 14:38:24,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a521246/e054188fb69f4040aed5a0280c44ed3e/FLAG289024ebb [2020-12-02 14:38:25,394 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:38:25,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c [2020-12-02 14:38:25,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a521246/e054188fb69f4040aed5a0280c44ed3e/FLAG289024ebb [2020-12-02 14:38:25,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a521246/e054188fb69f4040aed5a0280c44ed3e [2020-12-02 14:38:25,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:38:25,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:38:25,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:38:25,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:38:25,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:38:25,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:38:25" (1/1) ... [2020-12-02 14:38:25,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f1f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:25, skipping insertion in model container [2020-12-02 14:38:25,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:38:25" (1/1) ... [2020-12-02 14:38:25,789 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:38:25,805 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:38:25,953 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c[434,447] [2020-12-02 14:38:25,964 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:38:25,976 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:38:25,991 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c[434,447] [2020-12-02 14:38:25,992 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:38:26,010 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:38:26,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26 WrapperNode [2020-12-02 14:38:26,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:38:26,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:38:26,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:38:26,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:38:26,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:38:26,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:38:26,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:38:26,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:38:26,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... [2020-12-02 14:38:26,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:38:26,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:38:26,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:38:26,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:38:26,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:38:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:38:26,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:38:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:38:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:38:26,515 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:38:26,516 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-02 14:38:26,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:26 BoogieIcfgContainer [2020-12-02 14:38:26,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:38:26,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:38:26,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:38:26,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:38:26,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:38:25" (1/3) ... [2020-12-02 14:38:26,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347c6c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:38:26, skipping insertion in model container [2020-12-02 14:38:26,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:26" (2/3) ... [2020-12-02 14:38:26,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347c6c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:38:26, skipping insertion in model container [2020-12-02 14:38:26,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:26" (3/3) ... [2020-12-02 14:38:26,544 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2020-12-02 14:38:26,564 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:38:26,568 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:38:26,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:38:26,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:38:26,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:38:26,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:38:26,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:38:26,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:38:26,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:38:26,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:38:26,635 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:38:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-02 14:38:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:38:26,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:38:26,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:38:26,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:38:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:38:26,674 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-12-02 14:38:26,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:38:26,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939754676] [2020-12-02 14:38:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:38:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:38:26,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:38:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:38:26,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:38:26,960 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:38:26,961 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:38:26,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:38:26,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:38:26 BoogieIcfgContainer [2020-12-02 14:38:26,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:38:26,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:38:26,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:38:26,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:38:27,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:26" (3/4) ... [2020-12-02 14:38:27,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:38:27,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:38:27,010 INFO L168 Benchmark]: Toolchain (without parser) took 1254.29 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 34.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:27,014 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:27,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.66 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 22.8 MB in the end (delta: 94.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:27,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:27,021 INFO L168 Benchmark]: Boogie Preprocessor took 22.73 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 20.5 MB in the end (delta: 822.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:27,022 INFO L168 Benchmark]: RCFGBuilder took 448.22 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 32.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:27,024 INFO L168 Benchmark]: TraceAbstraction took 468.19 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 34.3 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:27,025 INFO L168 Benchmark]: Witness Printer took 6.52 ms. Allocated memory is still 56.6 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:27,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.66 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 22.8 MB in the end (delta: 94.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.73 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 20.5 MB in the end (delta: 822.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 448.22 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 32.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 468.19 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 34.3 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.52 ms. Allocated memory is still 56.6 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 14:38:29,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:38:29,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:38:29,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:38:29,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:38:29,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:38:29,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:38:29,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:38:29,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:38:29,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:38:29,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:38:29,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:38:29,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:38:29,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:38:29,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:38:29,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:38:29,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:38:29,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:38:29,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:38:29,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:38:29,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:38:29,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:38:29,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:38:29,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:38:29,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:38:29,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:38:29,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:38:29,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:38:29,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:38:29,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:38:29,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:38:29,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:38:29,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:38:29,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:38:29,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:38:29,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:38:29,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:38:29,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:38:29,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:38:29,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:38:29,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:38:29,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:38:29,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:38:29,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:38:29,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:38:29,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:38:29,963 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:38:29,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:38:29,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:38:29,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:38:29,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:38:29,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:38:29,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:38:29,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:38:29,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:38:29,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:38:29,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:38:29,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:38:29,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:38:29,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:38:29,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:38:29,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:38:29,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:38:29,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:38:29,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:38:29,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:38:29,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:38:29,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:38:29,969 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:38:29,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:38:29,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:38:29,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:38:29,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:38:29,971 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2020-12-02 14:38:30,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:38:30,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:38:30,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:38:30,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:38:30,454 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:38:30,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/nan_double.c [2020-12-02 14:38:30,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7bebc7a/02f4ad65e2b3457a93563537e2b08a93/FLAGa3915c7d8 [2020-12-02 14:38:31,131 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:38:31,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c [2020-12-02 14:38:31,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7bebc7a/02f4ad65e2b3457a93563537e2b08a93/FLAGa3915c7d8 [2020-12-02 14:38:31,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7bebc7a/02f4ad65e2b3457a93563537e2b08a93 [2020-12-02 14:38:31,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:38:31,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:38:31,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:38:31,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:38:31,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:38:31,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228cabd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31, skipping insertion in model container [2020-12-02 14:38:31,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,512 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:38:31,536 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:38:31,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c[434,447] [2020-12-02 14:38:31,807 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:38:31,853 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:38:31,872 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/nan_double.c[434,447] [2020-12-02 14:38:31,876 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:38:31,907 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:38:31,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31 WrapperNode [2020-12-02 14:38:31,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:38:31,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:38:31,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:38:31,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:38:31,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:38:31,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:38:31,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:38:31,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:38:31,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:31,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:32,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:32,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:32,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:32,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... [2020-12-02 14:38:32,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:38:32,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:38:32,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:38:32,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:38:32,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:38:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:38:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:38:32,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:38:32,460 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-02 14:38:32,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:32 BoogieIcfgContainer [2020-12-02 14:38:32,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:38:32,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:38:32,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:38:32,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:38:32,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:38:31" (1/3) ... [2020-12-02 14:38:32,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caada8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:38:32, skipping insertion in model container [2020-12-02 14:38:32,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:38:31" (2/3) ... [2020-12-02 14:38:32,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caada8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:38:32, skipping insertion in model container [2020-12-02 14:38:32,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:32" (3/3) ... [2020-12-02 14:38:32,472 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2020-12-02 14:38:32,491 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:38:32,495 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:38:32,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:38:32,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:38:32,543 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:38:32,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:38:32,543 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:38:32,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:38:32,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:38:32,544 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:38:32,544 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:38:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-02 14:38:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:38:32,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:38:32,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:38:32,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:38:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:38:32,577 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-12-02 14:38:32,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:38:32,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289972689] [2020-12-02 14:38:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 14:38:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:38:32,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:38:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:38:32,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:38:32,798 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 14:38:32,799 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:38:33,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:38:33,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:38:33 BoogieIcfgContainer [2020-12-02 14:38:33,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:38:33,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:38:33,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:38:33,045 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:38:33,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:38:32" (3/4) ... [2020-12-02 14:38:33,048 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 14:38:33,097 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 14:38:33,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:38:33,101 INFO L168 Benchmark]: Toolchain (without parser) took 1616.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 39.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:33,103 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:33,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.25 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 28.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:33,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.57 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 26.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:33,114 INFO L168 Benchmark]: Boogie Preprocessor took 63.27 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:33,116 INFO L168 Benchmark]: RCFGBuilder took 427.04 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 38.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:33,117 INFO L168 Benchmark]: TraceAbstraction took 579.10 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 40.8 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:38:33,117 INFO L168 Benchmark]: Witness Printer took 53.66 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 39.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:38:33,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.25 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 28.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.57 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 26.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.27 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 427.04 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 38.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 579.10 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 40.8 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.66 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 39.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 proved your program to be incorrect! Received shutdown request...