./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 54858612 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 ../sv-benchmarks/c/float-benchs/nan_float.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 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/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 ../sv-benchmarks/c/float-benchs/nan_float.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 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 0.2.0-5485861 [2020-10-25 21:40:16,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:40:16,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:40:16,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:40:16,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:40:16,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:40:16,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:40:16,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:40:16,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:40:16,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:40:16,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:40:16,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:40:16,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:40:16,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:40:16,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:40:16,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:40:16,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:40:16,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:40:16,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:40:16,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:40:16,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:40:16,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:40:16,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:40:16,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:40:16,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:40:16,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:40:16,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:40:16,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:40:16,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:40:16,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:40:16,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:40:16,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:40:16,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:40:16,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:40:16,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:40:16,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:40:16,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:40:16,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:40:16,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:40:16,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:40:16,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:40:16,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:40:16,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:40:16,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:40:16,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:40:16,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:40:16,590 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:40:16,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:40:16,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:40:16,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:40:16,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:40:16,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:40:16,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:40:16,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:40:16,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:40:16,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:40:16,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:40:16,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:40:16,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:40:16,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:40:16,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:40:16,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:40:16,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:40:16,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:40:16,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:40:16,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:40:16,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:40:16,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:40:16,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:40:16,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:40:16,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:40:16,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-25 21:40:17,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:40:17,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:40:17,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:40:17,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:40:17,088 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:40:17,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-25 21:40:17,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c8f2679/8af22caa099847e0b3eee200518ae178/FLAG4f2495a94 [2020-10-25 21:40:17,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:40:17,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-25 21:40:17,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c8f2679/8af22caa099847e0b3eee200518ae178/FLAG4f2495a94 [2020-10-25 21:40:18,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c8f2679/8af22caa099847e0b3eee200518ae178 [2020-10-25 21:40:18,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:40:18,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:40:18,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:40:18,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:40:18,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:40:18,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505897e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18, skipping insertion in model container [2020-10-25 21:40:18,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:40:18,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:40:18,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:40:18,451 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:40:18,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:40:18,489 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:40:18,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18 WrapperNode [2020-10-25 21:40:18,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:40:18,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:40:18,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:40:18,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:40:18,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:40:18,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:40:18,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:40:18,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:40:18,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (1/1) ... [2020-10-25 21:40:18,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:40:18,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:40:18,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:40:18,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:40:18,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (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 [2020-10-25 21:40:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:40:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:40:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:40:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:40:18,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:40:18,832 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 21:40:18,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:18 BoogieIcfgContainer [2020-10-25 21:40:18,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:40:18,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:40:18,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:40:18,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:40:18,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:40:18" (1/3) ... [2020-10-25 21:40:18,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f94050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:40:18, skipping insertion in model container [2020-10-25 21:40:18,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:18" (2/3) ... [2020-10-25 21:40:18,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f94050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:40:18, skipping insertion in model container [2020-10-25 21:40:18,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:18" (3/3) ... [2020-10-25 21:40:18,843 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-25 21:40:18,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:40:18,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:40:18,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:40:18,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:40:18,902 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:40:18,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:40:18,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:40:18,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:40:18,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:40:18,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:40:18,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:40:18,917 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 21:40:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-25 21:40:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:40:18,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-25 21:40:18,924 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:40:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:40:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-25 21:40:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:40:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680943970] [2020-10-25 21:40:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:40:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:40:19,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:40:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:40:19,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:40:19,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:40:19,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:40:19,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:40:19,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:40:19 BoogieIcfgContainer [2020-10-25 21:40:19,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:40:19,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:40:19,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:40:19,183 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:40:19,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:18" (3/4) ... [2020-10-25 21:40:19,190 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:40:19,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:40:19,195 INFO L168 Benchmark]: Toolchain (without parser) took 1045.02 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 30.2 MB in the end (delta: -2.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:19,199 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory is still 23.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:19,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:19,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.9 MB in the beginning and 27.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:19,207 INFO L168 Benchmark]: Boogie Preprocessor took 31.32 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 26.8 MB in the end (delta: 837.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:19,209 INFO L168 Benchmark]: RCFGBuilder took 271.07 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 30.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:19,210 INFO L168 Benchmark]: TraceAbstraction took 341.68 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.6 MB in the end (delta: -298.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:19,212 INFO L168 Benchmark]: Witness Printer took 11.74 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.2 MB in the end (delta: 355.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:19,230 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 39.8 MB. Free memory is still 23.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.9 MB in the beginning and 27.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.32 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 26.8 MB in the end (delta: 837.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 271.07 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 30.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 341.68 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.6 MB in the end (delta: -298.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 11.74 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.2 MB in the end (delta: 355.2 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 someBinaryFLOATComparisonOperation 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 0.2.0-5485861 [2020-10-25 21:40:21,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:40:21,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:40:21,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:40:21,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:40:21,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:40:21,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:40:21,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:40:21,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:40:21,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:40:21,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:40:21,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:40:21,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:40:21,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:40:21,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:40:21,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:40:21,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:40:21,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:40:21,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:40:21,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:40:21,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:40:21,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:40:21,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:40:21,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:40:21,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:40:21,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:40:21,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:40:21,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:40:21,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:40:21,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:40:21,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:40:21,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:40:21,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:40:21,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:40:21,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:40:21,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:40:21,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:40:21,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:40:21,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:40:21,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:40:21,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:40:21,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:40:22,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:40:22,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:40:22,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:40:22,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:40:22,049 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:40:22,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:40:22,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:40:22,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:40:22,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:40:22,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:40:22,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:40:22,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:40:22,053 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:40:22,053 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:40:22,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:40:22,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:40:22,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:40:22,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:40:22,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:40:22,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:40:22,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:40:22,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:40:22,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:40:22,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:40:22,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:40:22,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:40:22,056 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:40:22,057 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:40:22,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:40:22,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:40:22,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:40:22,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-25 21:40:22,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:40:22,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:40:22,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:40:22,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:40:22,610 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:40:22,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-25 21:40:22,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1be2572/7eda1336a70d403e935be59faddc50f1/FLAG2623b3ca7 [2020-10-25 21:40:23,338 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:40:23,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-25 21:40:23,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1be2572/7eda1336a70d403e935be59faddc50f1/FLAG2623b3ca7 [2020-10-25 21:40:23,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1be2572/7eda1336a70d403e935be59faddc50f1 [2020-10-25 21:40:23,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:40:23,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:40:23,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:40:23,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:40:23,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:40:23,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:40:23" (1/1) ... [2020-10-25 21:40:23,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:23, skipping insertion in model container [2020-10-25 21:40:23,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:40:23" (1/1) ... [2020-10-25 21:40:23,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:40:23,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:40:23,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:40:23,981 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:40:23,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:40:24,013 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:40:24,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24 WrapperNode [2020-10-25 21:40:24,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:40:24,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:40:24,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:40:24,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:40:24,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:40:24,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:40:24,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:40:24,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:40:24,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (1/1) ... [2020-10-25 21:40:24,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:40:24,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:40:24,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:40:24,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:40:24,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (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 [2020-10-25 21:40:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:40:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:40:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:40:24,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:40:24,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:40:24,505 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 21:40:24,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:24 BoogieIcfgContainer [2020-10-25 21:40:24,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:40:24,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:40:24,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:40:24,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:40:24,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:40:23" (1/3) ... [2020-10-25 21:40:24,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e46bb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:40:24, skipping insertion in model container [2020-10-25 21:40:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:40:24" (2/3) ... [2020-10-25 21:40:24,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e46bb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:40:24, skipping insertion in model container [2020-10-25 21:40:24,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:24" (3/3) ... [2020-10-25 21:40:24,517 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-25 21:40:24,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:40:24,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:40:24,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:40:24,595 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:40:24,596 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:40:24,596 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:40:24,596 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:40:24,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:40:24,597 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:40:24,597 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:40:24,597 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:40:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 21:40:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-25 21:40:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:40:24,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-25 21:40:24,621 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:40:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:40:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-25 21:40:24,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:40:24,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380562263] [2020-10-25 21:40:24,645 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 [2020-10-25 21:40:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:40:24,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:40:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:40:24,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:40:24,818 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:40:24,819 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:40:25,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:40:25,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:40:25 BoogieIcfgContainer [2020-10-25 21:40:25,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:40:25,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:40:25,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:40:25,080 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:40:25,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:40:24" (3/4) ... [2020-10-25 21:40:25,085 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:40:25,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:40:25,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:40:25,172 INFO L168 Benchmark]: Toolchain (without parser) took 1469.15 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 29.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:25,175 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory was 20.1 MB in the beginning and 20.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:25,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.19 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 25.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:25,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.28 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 24.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:25,182 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 22.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:25,183 INFO L168 Benchmark]: RCFGBuilder took 428.80 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 23.8 MB in the end (delta: -930.9 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:25,187 INFO L168 Benchmark]: TraceAbstraction took 567.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 30.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:40:25,190 INFO L168 Benchmark]: Witness Printer took 91.69 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 29.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:40:25,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory was 20.1 MB in the beginning and 20.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.19 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 25.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.28 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 24.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 22.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 428.80 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 23.8 MB in the end (delta: -930.9 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 567.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 30.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Witness Printer took 91.69 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 29.0 MB in the end (delta: 1.6 MB). There was no memory consumed. 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...