./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 ............................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-29 05:23:01,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:23:01,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:23:01,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:23:01,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:23:01,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:23:01,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:23:01,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:23:01,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:23:01,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:23:01,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:23:01,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:23:01,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:23:01,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:23:01,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:23:01,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:23:01,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:23:01,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:23:01,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:23:01,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:23:01,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:23:01,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:23:01,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:23:01,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:23:01,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:23:01,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:23:01,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:23:01,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:23:01,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:23:01,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:23:01,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:23:01,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:23:01,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:23:01,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:23:01,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:23:01,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:23:01,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:23:01,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:23:01,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:23:01,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:23:01,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:23:01,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:23:01,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:23:01,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:23:01,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:23:01,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:23:01,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:23:01,400 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:23:01,400 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:23:01,401 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:23:01,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:23:01,401 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:23:01,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:23:01,402 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:23:01,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:23:01,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:23:01,402 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:23:01,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:23:01,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:23:01,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:23:01,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:23:01,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:23:01,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:23:01,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:23:01,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:23:01,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:23:01,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:23:01,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:23:01,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:23:01,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:23:01,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:23:01,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:23:01,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:01,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:23:01,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:23:01,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:23:01,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:23:01,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:23:01,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:23:01,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:23:01,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:23:01,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-10-29 05:23:01,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:23:01,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:23:01,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:23:01,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:23:01,754 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:23:01,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-29 05:23:01,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/b7d03e7cd/0fc8fd94ead04cd78dc2688887f8c131/FLAGb2af91054 [2021-10-29 05:23:02,386 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:23:02,386 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-29 05:23:02,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/b7d03e7cd/0fc8fd94ead04cd78dc2688887f8c131/FLAGb2af91054 [2021-10-29 05:23:02,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/b7d03e7cd/0fc8fd94ead04cd78dc2688887f8c131 [2021-10-29 05:23:02,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:23:02,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:23:02,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:02,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:23:02,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:23:02,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e97c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02, skipping insertion in model container [2021-10-29 05:23:02,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:23:02,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:23:02,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-29 05:23:02,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:03,004 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:23:03,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-29 05:23:03,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:03,041 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:23:03,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03 WrapperNode [2021-10-29 05:23:03,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:03,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:03,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:23:03,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:23:03,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:03,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:23:03,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:23:03,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:23:03,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:23:03,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:23:03,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:23:03,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:23:03,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (1/1) ... [2021-10-29 05:23:03,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:23:03,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:23:03,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:23:03,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:23:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:23:03,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:23:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:23:03,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:23:03,540 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:23:03,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:03 BoogieIcfgContainer [2021-10-29 05:23:03,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:23:03,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:23:03,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:23:03,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:23:03,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:23:02" (1/3) ... [2021-10-29 05:23:03,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d16e8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:03, skipping insertion in model container [2021-10-29 05:23:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:03" (2/3) ... [2021-10-29 05:23:03,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d16e8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:03, skipping insertion in model container [2021-10-29 05:23:03,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:03" (3/3) ... [2021-10-29 05:23:03,570 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-29 05:23:03,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:23:03,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:23:03,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:23:03,669 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:23:03,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:23:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:23:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:23:03,691 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:03,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:23:03,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-29 05:23:03,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:03,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528836385] [2021-10-29 05:23:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:03,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:23:03,837 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:23:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:23:03,875 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:23:03,877 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:23:03,879 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:23:03,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:23:03,885 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:23:03,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:23:03,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:23:03 BoogieIcfgContainer [2021-10-29 05:23:03,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:23:03,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:23:03,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:23:03,906 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:23:03,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:03" (3/4) ... [2021-10-29 05:23:03,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:23:03,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:23:03,912 INFO L168 Benchmark]: Toolchain (without parser) took 1139.54 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 60.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:03,913 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:03,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.96 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 85.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:03,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.75 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:03,917 INFO L168 Benchmark]: Boogie Preprocessor took 42.87 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 83.7 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:03,918 INFO L168 Benchmark]: RCFGBuilder took 397.23 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 74.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:03,919 INFO L168 Benchmark]: TraceAbstraction took 358.37 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 60.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:03,920 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 109.1 MB. Free memory was 60.9 MB in the beginning and 60.6 MB in the end (delta: 299.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:03,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.96 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 85.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.75 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.87 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 83.7 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 397.23 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 74.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 358.37 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 60.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 109.1 MB. Free memory was 60.9 MB in the beginning and 60.6 MB in the end (delta: 299.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 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, 3 NumberOfCodeBlocks, 3 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 [2021-10-29 05:23:03,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:23:06,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:23:06,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:23:06,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:23:06,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:23:06,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:23:06,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:23:06,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:23:06,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:23:06,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:23:06,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:23:06,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:23:06,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:23:06,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:23:06,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:23:06,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:23:06,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:23:06,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:23:06,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:23:06,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:23:06,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:23:06,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:23:06,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:23:06,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:23:06,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:23:06,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:23:06,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:23:06,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:23:06,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:23:06,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:23:06,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:23:06,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:23:06,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:23:06,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:23:06,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:23:06,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:23:06,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:23:06,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:23:06,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:23:06,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:23:06,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:23:06,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:23:06,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:23:06,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:23:06,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:23:06,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:23:06,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:23:06,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:23:06,863 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:23:06,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:23:06,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:23:06,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:23:06,865 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:23:06,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:23:06,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:23:06,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:23:06,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:23:06,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:23:06,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:23:06,867 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:23:06,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:23:06,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:23:06,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:23:06,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:23:06,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:23:06,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:23:06,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:23:06,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:23:06,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:06,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:23:06,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:23:06,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:23:06,870 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:23:06,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:23:06,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:23:06,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:23:06,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:23:06,872 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-10-29 05:23:07,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:23:07,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:23:07,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:23:07,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:23:07,325 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:23:07,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-29 05:23:07,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/c5bb515c6/7ff311bf994f4d82bccf0175df188486/FLAG86395973f [2021-10-29 05:23:07,991 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:23:07,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-29 05:23:07,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/c5bb515c6/7ff311bf994f4d82bccf0175df188486/FLAG86395973f [2021-10-29 05:23:08,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/data/c5bb515c6/7ff311bf994f4d82bccf0175df188486 [2021-10-29 05:23:08,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:23:08,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:23:08,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:08,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:23:08,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:23:08,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1851b872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08, skipping insertion in model container [2021-10-29 05:23:08,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:23:08,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:23:08,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-29 05:23:08,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:08,518 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:23:08,530 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-29 05:23:08,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:08,547 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:23:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08 WrapperNode [2021-10-29 05:23:08,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:08,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:08,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:23:08,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:23:08,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:08,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:23:08,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:23:08,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:23:08,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:23:08,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:23:08,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:23:08,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:23:08,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (1/1) ... [2021-10-29 05:23:08,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:08,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:23:08,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:23:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:23:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:23:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:23:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:23:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:23:08,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:23:08,957 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:23:08,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:08 BoogieIcfgContainer [2021-10-29 05:23:08,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:23:08,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:23:08,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:23:08,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:23:08,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:23:08" (1/3) ... [2021-10-29 05:23:08,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fea477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:08, skipping insertion in model container [2021-10-29 05:23:08,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:08" (2/3) ... [2021-10-29 05:23:08,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fea477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:08, skipping insertion in model container [2021-10-29 05:23:08,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:08" (3/3) ... [2021-10-29 05:23:09,012 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-29 05:23:09,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:23:09,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:23:09,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:23:09,105 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:23:09,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:23:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:23:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:23:09,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:09,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:23:09,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-29 05:23:09,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:23:09,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226491120] [2021-10-29 05:23:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:09,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:23:09,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:23:09,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:23:09,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:23:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:23:09,286 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:23:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:23:09,340 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:23:09,342 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:23:09,344 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:23:09,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:23:09,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:23:09,570 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:23:09,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:23:09,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:23:09 BoogieIcfgContainer [2021-10-29 05:23:09,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:23:09,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:23:09,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:23:09,607 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:23:09,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:08" (3/4) ... [2021-10-29 05:23:09,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:23:09,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:23:09,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:23:09,674 INFO L168 Benchmark]: Toolchain (without parser) took 1347.93 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 48.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:09,680 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:09,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.66 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 49.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:09,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 77.6 MB. Free memory was 49.3 MB in the beginning and 48.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:09,685 INFO L168 Benchmark]: Boogie Preprocessor took 23.36 ms. Allocated memory is still 77.6 MB. Free memory was 47.9 MB in the beginning and 46.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:09,687 INFO L168 Benchmark]: RCFGBuilder took 358.83 ms. Allocated memory is still 77.6 MB. Free memory was 46.8 MB in the beginning and 38.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:23:09,688 INFO L168 Benchmark]: TraceAbstraction took 632.21 ms. Allocated memory is still 77.6 MB. Free memory was 37.5 MB in the beginning and 49.7 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:09,690 INFO L168 Benchmark]: Witness Printer took 61.35 ms. Allocated memory is still 77.6 MB. Free memory was 49.3 MB in the beginning and 48.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:23:09,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.66 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 49.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 77.6 MB. Free memory was 49.3 MB in the beginning and 48.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.36 ms. Allocated memory is still 77.6 MB. Free memory was 47.9 MB in the beginning and 46.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.83 ms. Allocated memory is still 77.6 MB. Free memory was 46.8 MB in the beginning and 38.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 632.21 ms. Allocated memory is still 77.6 MB. Free memory was 37.5 MB in the beginning and 49.7 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.35 ms. Allocated memory is still 77.6 MB. Free memory was 49.3 MB in the beginning and 48.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 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! [2021-10-29 05:23:09,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5309b74-516c-4c12-877b-eae38bac4018/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...