./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 e3490f452c75bd943c0f7c3f7fb58032fe6d705c .................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 e3490f452c75bd943c0f7c3f7fb58032fe6d705c ....................................................................................................................................................................................................................................... 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-ee8e70e [2020-10-24 14:39:21,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:39:21,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:39:21,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:39:21,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:39:21,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:39:21,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:39:21,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:39:21,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:39:21,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:39:21,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:39:21,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:39:21,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:39:21,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:39:21,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:39:21,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:39:21,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:39:21,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:39:21,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:39:21,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:39:21,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:39:21,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:39:21,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:39:21,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:39:21,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:39:21,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:39:21,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:39:21,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:39:21,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:39:21,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:39:21,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:39:21,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:39:21,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:39:21,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:39:21,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:39:21,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:39:21,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:39:21,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:39:21,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:39:21,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:39:21,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:39:21,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:39:21,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:39:21,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:39:21,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:39:21,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:39:21,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:39:21,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:39:21,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:39:21,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:39:21,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:39:21,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:39:21,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:39:21,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:39:21,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:39:21,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:39:21,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:39:21,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:39:21,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:39:21,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:39:21,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:39:21,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:39:21,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:39:21,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:39:21,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:39:21,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:39:21,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:39:21,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:39:21,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:39:21,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:39:21,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:39:21,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-24 14:39:21,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:39:21,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:39:21,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:39:21,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:39:21,787 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:39:21,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 14:39:21,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/684014301/1864d64cab1a42658f02072375f1d0e8/FLAG8434caf8a [2020-10-24 14:39:22,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:39:22,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 14:39:22,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/684014301/1864d64cab1a42658f02072375f1d0e8/FLAG8434caf8a [2020-10-24 14:39:22,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/684014301/1864d64cab1a42658f02072375f1d0e8 [2020-10-24 14:39:22,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:39:22,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:39:22,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:39:22,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:39:22,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:39:22,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbdbe8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22, skipping insertion in model container [2020-10-24 14:39:22,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,624 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:39:22,637 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:39:22,810 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:39:22,822 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:39:22,839 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:39:22,857 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:39:22,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22 WrapperNode [2020-10-24 14:39:22,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:39:22,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:39:22,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:39:22,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:39:22,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:39:22,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:39:22,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:39:22,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:39:22,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (1/1) ... [2020-10-24 14:39:22,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:39:22,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:39:22,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:39:22,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:39:22,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (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 [2020-10-24 14:39:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:39:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:39:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:39:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:39:23,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:39:23,265 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 14:39:23,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:23 BoogieIcfgContainer [2020-10-24 14:39:23,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:39:23,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:39:23,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:39:23,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:39:23,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:39:22" (1/3) ... [2020-10-24 14:39:23,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2d93fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:23, skipping insertion in model container [2020-10-24 14:39:23,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:22" (2/3) ... [2020-10-24 14:39:23,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2d93fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:23, skipping insertion in model container [2020-10-24 14:39:23,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:23" (3/3) ... [2020-10-24 14:39:23,280 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-24 14:39:23,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:39:23,301 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:39:23,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:39:23,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:39:23,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:39:23,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:39:23,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:39:23,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:39:23,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:39:23,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:39:23,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:39:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 14:39:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:39:23,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:39:23,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:39:23,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:39:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:39:23,388 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-24 14:39:23,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:39:23,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064427234] [2020-10-24 14:39:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:39:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:39:23,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:39:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:39:23,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:39:23,583 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:39:23,583 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:39:23,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:39:23,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:39:23 BoogieIcfgContainer [2020-10-24 14:39:23,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:39:23,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:39:23,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:39:23,611 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:39:23,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:23" (3/4) ... [2020-10-24 14:39:23,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:39:23,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:39:23,620 INFO L168 Benchmark]: Toolchain (without parser) took 1025.84 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.5 MB in the beginning and 32.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:23,621 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:23,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.24 ms. Allocated memory is still 44.0 MB. Free memory was 19.9 MB in the beginning and 22.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:23,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.37 ms. Allocated memory is still 44.0 MB. Free memory was 22.1 MB in the beginning and 20.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:23,624 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 19.8 MB in the end (delta: 864.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:23,625 INFO L168 Benchmark]: RCFGBuilder took 342.85 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 30.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:23,626 INFO L168 Benchmark]: TraceAbstraction took 339.94 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 32.2 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:23,627 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 32.0 MB in the end (delta: 275.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:23,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.24 ms. Allocated memory is still 44.0 MB. Free memory was 19.9 MB in the beginning and 22.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.37 ms. Allocated memory is still 44.0 MB. Free memory was 22.1 MB in the beginning and 20.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.52 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 19.8 MB in the end (delta: 864.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.85 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 30.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 339.94 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 32.2 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.73 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 32.0 MB in the end (delta: 275.2 kB). There was no memory consumed. Max. memory is 16.1 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 someBinaryFLOAT_SMTComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L8] COND TRUE !(cond) [L3] __assert_fail("0", "nan_float.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=10occurred 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-ee8e70e [2020-10-24 14:39:26,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:39:26,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:39:26,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:39:26,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:39:26,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:39:26,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:39:26,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:39:26,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:39:26,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:39:26,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:39:26,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:39:26,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:39:26,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:39:26,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:39:26,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:39:26,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:39:26,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:39:26,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:39:26,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:39:26,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:39:26,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:39:26,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:39:26,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:39:26,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:39:26,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:39:26,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:39:26,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:39:26,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:39:26,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:39:26,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:39:26,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:39:26,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:39:26,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:39:26,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:39:26,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:39:26,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:39:26,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:39:26,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:39:26,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:39:26,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:39:26,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:39:26,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:39:26,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:39:26,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:39:26,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:39:26,309 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:39:26,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:39:26,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:39:26,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:39:26,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:39:26,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:39:26,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:39:26,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:39:26,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:39:26,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:39:26,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:39:26,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:39:26,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:39:26,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:39:26,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:39:26,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:39:26,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:39:26,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:39:26,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:39:26,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:39:26,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:39:26,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:39:26,317 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:39:26,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:39:26,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:39:26,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:39:26,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:39:26,318 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-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-24 14:39:26,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:39:26,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:39:26,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:39:26,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:39:26,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:39:26,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 14:39:26,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424b1e6f3/67adf5da0c83414fb96135b5b54e5c66/FLAGa24353c0b [2020-10-24 14:39:27,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:39:27,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 14:39:27,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424b1e6f3/67adf5da0c83414fb96135b5b54e5c66/FLAGa24353c0b [2020-10-24 14:39:27,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/424b1e6f3/67adf5da0c83414fb96135b5b54e5c66 [2020-10-24 14:39:27,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:39:27,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:39:27,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:39:27,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:39:27,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:39:27,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:27" (1/1) ... [2020-10-24 14:39:27,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26807fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:27, skipping insertion in model container [2020-10-24 14:39:27,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:27" (1/1) ... [2020-10-24 14:39:27,901 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:39:27,922 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:39:28,143 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:39:28,171 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:39:28,188 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:39:28,209 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:39:28,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28 WrapperNode [2020-10-24 14:39:28,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:39:28,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:39:28,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:39:28,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:39:28,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:39:28,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:39:28,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:39:28,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:39:28,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (1/1) ... [2020-10-24 14:39:28,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:39:28,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:39:28,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:39:28,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:39:28,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (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 [2020-10-24 14:39:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:39:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:39:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:39:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:39:28,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:39:28,599 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 14:39:28,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:28 BoogieIcfgContainer [2020-10-24 14:39:28,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:39:28,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:39:28,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:39:28,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:39:28,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:39:27" (1/3) ... [2020-10-24 14:39:28,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f1f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:28, skipping insertion in model container [2020-10-24 14:39:28,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:28" (2/3) ... [2020-10-24 14:39:28,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f1f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:28, skipping insertion in model container [2020-10-24 14:39:28,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:28" (3/3) ... [2020-10-24 14:39:28,611 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-24 14:39:28,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:39:28,630 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:39:28,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:39:28,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:39:28,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:39:28,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:39:28,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:39:28,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:39:28,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:39:28,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:39:28,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:39:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 14:39:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:39:28,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:39:28,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:39:28,701 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:39:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:39:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-24 14:39:28,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:39:28,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438621090] [2020-10-24 14:39:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:39:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:39:28,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:39:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:39:28,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:39:28,895 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 14:39:28,896 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:39:29,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:39:29,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:39:29 BoogieIcfgContainer [2020-10-24 14:39:29,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:39:29,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:39:29,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:39:29,136 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:39:29,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:28" (3/4) ... [2020-10-24 14:39:29,139 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 14:39:29,205 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:39:29,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:39:29,208 INFO L168 Benchmark]: Toolchain (without parser) took 1340.75 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.1 MB in the beginning and 35.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:29,210 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:29,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.72 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 26.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:29,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:29,212 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:29,213 INFO L168 Benchmark]: RCFGBuilder took 317.93 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 35.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:29,214 INFO L168 Benchmark]: TraceAbstraction took 531.23 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 37.4 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:39:29,215 INFO L168 Benchmark]: Witness Printer took 70.41 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 35.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:39:29,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.72 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 26.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 317.93 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 35.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 531.23 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 37.4 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.41 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 35.6 MB in the end (delta: 1.6 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L8] COND TRUE !(cond) [L3] __assert_fail("0", "nan_float.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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...