./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI --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 e70fb0031ee54295dcc583b462c02b21fc0481d0 .............................................................................................................................................................................................................................................. 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_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI --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 e70fb0031ee54295dcc583b462c02b21fc0481d0 ............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:33:17,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:17,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:17,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:17,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:17,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:17,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:17,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:17,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:17,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:17,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:17,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:17,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:17,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:17,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:17,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:17,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:17,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:17,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:17,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:17,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:17,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:17,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:17,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:17,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:17,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:17,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:17,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:17,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:17,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:17,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:17,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:17,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:17,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:17,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:17,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:17,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:17,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:17,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:17,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:17,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:17,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:33:17,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:18,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:18,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:18,002 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:18,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:18,003 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:18,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:33:18,004 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:18,005 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:18,005 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:33:18,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:33:18,007 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:18,007 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:33:18,008 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:33:18,008 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:33:18,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:18,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:18,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:33:18,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:18,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:18,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:33:18,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:18,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:33:18,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:18,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:18,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:33:18,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:18,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:33:18,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:18,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:18,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:18,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:18,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:18,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:33:18,016 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:33:18,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:33:18,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:33:18,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:18,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:18,018 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_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2021-10-11 02:33:18,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:18,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:18,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:18,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:18,372 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:18,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-11 02:33:18,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/b49e193da/03e85c8e2abb4b1191bc157011f63227/FLAG370afeb30 [2021-10-11 02:33:19,038 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:19,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-11 02:33:19,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/b49e193da/03e85c8e2abb4b1191bc157011f63227/FLAG370afeb30 [2021-10-11 02:33:19,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/b49e193da/03e85c8e2abb4b1191bc157011f63227 [2021-10-11 02:33:19,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:19,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:19,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:19,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:19,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:19,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6389778b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19, skipping insertion in model container [2021-10-11 02:33:19,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:19,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:19,612 WARN L226 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_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-11 02:33:19,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:19,633 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:19,647 WARN L226 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_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-11 02:33:19,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:19,677 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:19,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19 WrapperNode [2021-10-11 02:33:19,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:19,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:19,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:19,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:19,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:19,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:19,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:19,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:19,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... [2021-10-11 02:33:19,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:19,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:19,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:19,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:19,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:19,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:33:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:20,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:20,125 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:33:20,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:20 BoogieIcfgContainer [2021-10-11 02:33:20,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:20,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:20,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:20,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:20,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:19" (1/3) ... [2021-10-11 02:33:20,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8f4e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:20, skipping insertion in model container [2021-10-11 02:33:20,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:19" (2/3) ... [2021-10-11 02:33:20,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8f4e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:20, skipping insertion in model container [2021-10-11 02:33:20,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:20" (3/3) ... [2021-10-11 02:33:20,137 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-11 02:33:20,154 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:20,166 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:20,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:20,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:20,222 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:20,222 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:20,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:20,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:20,223 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:20,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:20,226 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:33:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:33:20,246 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:33:20,247 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash 46290, now seen corresponding path program 1 times [2021-10-11 02:33:20,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132783283] [2021-10-11 02:33:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:20,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:20,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:20,484 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:33:20,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:33:20,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:20,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:20 BoogieIcfgContainer [2021-10-11 02:33:20,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:20,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:20,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:20,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:20,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:20" (3/4) ... [2021-10-11 02:33:20,519 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:33:20,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:20,524 INFO L168 Benchmark]: Toolchain (without parser) took 1090.28 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 57.8 MB in the end (delta: 21.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:20,526 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:20,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.00 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 84.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:20,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.80 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:20,532 INFO L168 Benchmark]: Boogie Preprocessor took 22.20 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:20,533 INFO L168 Benchmark]: RCFGBuilder took 371.17 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 70.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:20,534 INFO L168 Benchmark]: TraceAbstraction took 382.26 ms. Allocated memory is still 107.0 MB. Free memory was 69.6 MB in the beginning and 58.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:20,535 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 107.0 MB. Free memory was 58.0 MB in the beginning and 57.8 MB in the end (delta: 208.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:20,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.00 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 84.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.80 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.20 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.17 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 70.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 382.26 ms. Allocated memory is still 107.0 MB. Free memory was 69.6 MB in the beginning and 58.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.17 ms. Allocated memory is still 107.0 MB. Free memory was 58.0 MB in the beginning and 57.8 MB in the end (delta: 208.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of 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. 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=6occurred 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, 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:33:23,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:23,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:23,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:23,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:23,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:23,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:23,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:23,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:23,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:23,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:23,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:23,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:23,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:23,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:23,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:23,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:23,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:23,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:23,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:23,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:23,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:23,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:23,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:23,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:23,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:23,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:23,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:23,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:23,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:23,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:23,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:23,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:23,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:23,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:23,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:23,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:23,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:23,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:23,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:23,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:33:23,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:23,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:23,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:23,358 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:23,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:23,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:23,377 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:23,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:23,377 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:23,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:23,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:23,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:23,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:23,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:33:23,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:23,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:33:23,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:23,382 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:33:23,382 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:33:23,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:23,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:33:23,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:23,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:33:23,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:23,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:33:23,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:23,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:23,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:23,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:23,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:33:23,385 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:33:23,385 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:33:23,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:33:23,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:23,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:23,386 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_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2021-10-11 02:33:23,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:23,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:23,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:23,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:23,833 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:23,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-11 02:33:23,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/09006589c/9a20094719f44408813e0496d98df28f/FLAG68ada4de5 [2021-10-11 02:33:24,429 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:24,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-11 02:33:24,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/09006589c/9a20094719f44408813e0496d98df28f/FLAG68ada4de5 [2021-10-11 02:33:24,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/data/09006589c/9a20094719f44408813e0496d98df28f [2021-10-11 02:33:24,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:24,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:24,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:24,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:24,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:24,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:24" (1/1) ... [2021-10-11 02:33:24,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f8c56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:24, skipping insertion in model container [2021-10-11 02:33:24,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:24" (1/1) ... [2021-10-11 02:33:24,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:24,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:24,982 WARN L226 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_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-11 02:33:24,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:25,005 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:25,019 WARN L226 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_a49fa003-b198-4d7d-813e-22df961bbc92/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-11 02:33:25,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:25,038 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25 WrapperNode [2021-10-11 02:33:25,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:25,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:25,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:25,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:25,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:25,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:25,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:25,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:25,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... [2021-10-11 02:33:25,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:25,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:25,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:25,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:25,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:33:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:25,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:25,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:25,427 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:33:25,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:25 BoogieIcfgContainer [2021-10-11 02:33:25,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:25,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:25,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:25,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:24" (1/3) ... [2021-10-11 02:33:25,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37a95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:25, skipping insertion in model container [2021-10-11 02:33:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:25" (2/3) ... [2021-10-11 02:33:25,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37a95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:25, skipping insertion in model container [2021-10-11 02:33:25,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:25" (3/3) ... [2021-10-11 02:33:25,437 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-11 02:33:25,452 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:25,455 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:25,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:25,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:25,491 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:25,491 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:25,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:25,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:25,491 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:25,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:25,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:33:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:33:25,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:25,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:33:25,509 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:25,515 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-11 02:33:25,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:25,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97382275] [2021-10-11 02:33:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:25,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:25,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:25,756 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:33:25,756 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:33:25,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:33:26,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:26 BoogieIcfgContainer [2021-10-11 02:33:26,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:26,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:26,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:26,016 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:26,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:25" (3/4) ... [2021-10-11 02:33:26,019 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:33:26,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49fa003-b198-4d7d-813e-22df961bbc92/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:26,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:26,095 INFO L168 Benchmark]: Toolchain (without parser) took 1302.42 ms. Allocated memory is still 77.6 MB. Free memory was 43.3 MB in the beginning and 34.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,097 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 59.7 MB in the beginning and 59.7 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:26,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.17 ms. Allocated memory is still 77.6 MB. Free memory was 43.1 MB in the beginning and 54.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.68 ms. Allocated memory is still 77.6 MB. Free memory was 54.5 MB in the beginning and 62.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,103 INFO L168 Benchmark]: Boogie Preprocessor took 55.10 ms. Allocated memory is still 77.6 MB. Free memory was 62.7 MB in the beginning and 61.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,104 INFO L168 Benchmark]: RCFGBuilder took 275.30 ms. Allocated memory is still 77.6 MB. Free memory was 61.4 MB in the beginning and 50.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,105 INFO L168 Benchmark]: TraceAbstraction took 577.29 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 36.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,107 INFO L168 Benchmark]: Witness Printer took 78.85 ms. Allocated memory is still 77.6 MB. Free memory was 36.0 MB in the beginning and 34.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:26,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 59.7 MB in the beginning and 59.7 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.17 ms. Allocated memory is still 77.6 MB. Free memory was 43.1 MB in the beginning and 54.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.68 ms. Allocated memory is still 77.6 MB. Free memory was 54.5 MB in the beginning and 62.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.10 ms. Allocated memory is still 77.6 MB. Free memory was 62.7 MB in the beginning and 61.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 275.30 ms. Allocated memory is still 77.6 MB. Free memory was 61.4 MB in the beginning and 50.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 577.29 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 36.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 78.85 ms. Allocated memory is still 77.6 MB. Free memory was 36.0 MB in the beginning and 34.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...