./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF --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 da879977a62fc491d3b25f9b819eca05b8eceba445d85a8f3259b3973b759af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:33:17,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:33:17,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:33:17,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:33:17,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:33:17,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:33:17,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:33:17,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:33:17,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:33:17,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:33:17,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:33:17,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:33:17,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:33:17,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:33:17,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:33:17,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:33:17,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:33:17,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:33:17,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:33:17,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:33:17,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:33:17,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:33:17,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:33:17,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:33:17,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:33:17,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:33:17,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:33:17,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:33:17,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:33:17,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:33:17,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:33:17,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:33:17,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:33:17,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:33:17,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:33:17,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:33:17,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:33:17,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:33:17,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:33:17,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:33:17,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:33:17,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:33:17,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:33:17,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:33:17,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:33:17,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:33:17,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:33:17,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:33:17,942 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:33:17,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:33:17,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:33:17,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:33:17,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:33:17,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:33:17,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:33:17,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:33:17,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:33:17,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:33:17,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:33:17,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:33:17,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:33:17,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:33:17,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:33:17,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:33:17,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:33:17,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:33:17,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:33:17,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:33:17,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:33:17,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:33:17,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:33:17,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:33:17,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:33:17,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:33:17,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:33:17,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:33:17,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:33:17,950 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_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da879977a62fc491d3b25f9b819eca05b8eceba445d85a8f3259b3973b759af7 [2021-11-12 22:33:18,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:33:18,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:33:18,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:33:18,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:33:18,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:33:18,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/float_double.c [2021-11-12 22:33:18,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/0a9b95e59/eaa79a391434409b9afc356d9c1b91dc/FLAGe40f0d66f [2021-11-12 22:33:18,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:33:18,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c [2021-11-12 22:33:18,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/0a9b95e59/eaa79a391434409b9afc356d9c1b91dc/FLAGe40f0d66f [2021-11-12 22:33:19,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/0a9b95e59/eaa79a391434409b9afc356d9c1b91dc [2021-11-12 22:33:19,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:33:19,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:33:19,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:33:19,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:33:19,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:33:19,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166844be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19, skipping insertion in model container [2021-11-12 22:33:19,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:33:19,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:33:19,339 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_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-11-12 22:33:19,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:33:19,356 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:33:19,365 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_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-11-12 22:33:19,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:33:19,380 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:33:19,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19 WrapperNode [2021-11-12 22:33:19,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:33:19,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:33:19,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:33:19,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:33:19,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:33:19,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:33:19,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:33:19,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:33:19,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:33:19,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:33:19,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:33:19,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:33:19,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (1/1) ... [2021-11-12 22:33:19,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:33:19,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:33:19,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:33:19,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:33:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:33:19,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:33:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:33:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:33:19,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:33:19,667 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:33:19,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:19 BoogieIcfgContainer [2021-11-12 22:33:19,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:33:19,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:33:19,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:33:19,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:33:19,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:33:19" (1/3) ... [2021-11-12 22:33:19,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edaf052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:33:19, skipping insertion in model container [2021-11-12 22:33:19,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:19" (2/3) ... [2021-11-12 22:33:19,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edaf052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:33:19, skipping insertion in model container [2021-11-12 22:33:19,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:19" (3/3) ... [2021-11-12 22:33:19,678 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-11-12 22:33:19,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:33:19,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:33:19,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:33:19,734 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 [2021-11-12 22:33:19,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:33:19,747 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) [2021-11-12 22:33:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:33:19,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:19,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:33:19,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-12 22:33:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:33:19,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691482671] [2021-11-12 22:33:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:19,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:33:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:33:19,869 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:33:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:33:19,905 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:33:19,907 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:33:19,909 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:33:19,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:33:19,915 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:33:19,919 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:33:19,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:33:19 BoogieIcfgContainer [2021-11-12 22:33:19,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:33:19,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:33:19,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:33:19,938 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:33:19,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:19" (3/4) ... [2021-11-12 22:33:19,942 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:33:19,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:33:19,943 INFO L158 Benchmark]: Toolchain (without parser) took 788.30ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 67.4MB in the end (delta: 10.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-12 22:33:19,944 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:33:19,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.12ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 92.7MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:33:19,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.04ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 91.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:33:19,946 INFO L158 Benchmark]: Boogie Preprocessor took 15.93ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 90.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:33:19,946 INFO L158 Benchmark]: RCFGBuilder took 230.06ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 81.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:33:19,947 INFO L158 Benchmark]: TraceAbstraction took 265.56ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 68.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:33:19,948 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 517.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:33:19,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.12ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 92.7MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.04ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 91.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.93ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 90.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.06ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 81.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 265.56ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 68.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 517.2kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 6]: 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 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L10] double x = 1e20 + 1.; [L11] float y = x; [L12] CALL __VERIFIER_assert(x != y) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - 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: , 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 [2021-11-12 22:33:20,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF --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 da879977a62fc491d3b25f9b819eca05b8eceba445d85a8f3259b3973b759af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:33:22,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:33:22,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:33:22,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:33:22,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:33:22,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:33:22,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:33:22,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:33:22,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:33:22,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:33:22,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:33:22,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:33:22,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:33:22,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:33:22,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:33:22,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:33:22,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:33:22,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:33:22,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:33:22,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:33:22,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:33:22,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:33:22,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:33:22,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:33:22,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:33:22,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:33:22,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:33:22,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:33:22,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:33:22,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:33:22,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:33:22,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:33:22,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:33:22,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:33:22,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:33:22,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:33:22,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:33:22,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:33:22,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:33:22,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:33:22,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:33:22,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:33:22,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:33:22,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:33:22,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:33:22,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:33:22,552 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:33:22,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:33:22,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:33:22,553 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:33:22,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:33:22,553 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:33:22,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:33:22,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:33:22,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:33:22,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:33:22,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:33:22,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:33:22,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:33:22,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:33:22,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:33:22,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:33:22,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:33:22,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:33:22,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:33:22,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:33:22,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:33:22,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:33:22,561 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:33:22,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:33:22,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:33:22,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:33:22,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:33:22,563 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_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da879977a62fc491d3b25f9b819eca05b8eceba445d85a8f3259b3973b759af7 [2021-11-12 22:33:22,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:33:22,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:33:22,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:33:22,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:33:22,989 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:33:22,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/float_double.c [2021-11-12 22:33:23,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/c66c84b03/b9d366699c1f493a8e57cc58f174edf9/FLAGc621f068d [2021-11-12 22:33:23,513 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:33:23,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c [2021-11-12 22:33:23,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/c66c84b03/b9d366699c1f493a8e57cc58f174edf9/FLAGc621f068d [2021-11-12 22:33:23,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/data/c66c84b03/b9d366699c1f493a8e57cc58f174edf9 [2021-11-12 22:33:23,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:33:23,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:33:23,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:33:23,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:33:23,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:33:23,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:33:23" (1/1) ... [2021-11-12 22:33:23,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc86fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:23, skipping insertion in model container [2021-11-12 22:33:23,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:33:23" (1/1) ... [2021-11-12 22:33:23,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:33:23,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:33:24,072 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_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-11-12 22:33:24,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:33:24,093 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:33:24,106 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_d827e181-0369-4113-8db5-8025e1811899/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-11-12 22:33:24,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:33:24,122 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:33:24,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24 WrapperNode [2021-11-12 22:33:24,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:33:24,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:33:24,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:33:24,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:33:24,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:33:24,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:33:24,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:33:24,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:33:24,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:33:24,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:33:24,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:33:24,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:33:24,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (1/1) ... [2021-11-12 22:33:24,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:33:24,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:33:24,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:33:24,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:33:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:33:24,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:33:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:33:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:33:24,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:33:24,779 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:33:24,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:24 BoogieIcfgContainer [2021-11-12 22:33:24,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:33:24,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:33:24,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:33:24,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:33:24,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:33:23" (1/3) ... [2021-11-12 22:33:24,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7758e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:33:24, skipping insertion in model container [2021-11-12 22:33:24,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:33:24" (2/3) ... [2021-11-12 22:33:24,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7758e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:33:24, skipping insertion in model container [2021-11-12 22:33:24,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:24" (3/3) ... [2021-11-12 22:33:24,789 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-11-12 22:33:24,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:33:24,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:33:24,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:33:24,848 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 [2021-11-12 22:33:24,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:33:24,861 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) [2021-11-12 22:33:24,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:33:24,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:24,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:33:24,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-12 22:33:24,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:24,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058008709] [2021-11-12 22:33:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:24,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:24,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:24,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:33:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:25,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:33:25,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:25,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:25,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:25,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058008709] [2021-11-12 22:33:25,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058008709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:33:25,349 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:33:25,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:33:25,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253173102] [2021-11-12 22:33:25,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:25,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:33:25,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:33:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:33:25,387 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-12 22:33:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:25,405 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-12 22:33:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:33:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) Word has length 4 [2021-11-12 22:33:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:25,413 INFO L225 Difference]: With dead ends: 13 [2021-11-12 22:33:25,413 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:33:25,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:33:25,420 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:25,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.95ms Time] [2021-11-12 22:33:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:33:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:33:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-12 22:33:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:33:25,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-11-12 22:33:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:25,445 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:33:25,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-12 22:33:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:33:25,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:33:25,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:33:25,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:25,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:25,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:33:25,673 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:33:25,674 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:33:25,674 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:33:25,674 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:33:25,674 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-11-12 22:33:25,675 INFO L854 garLoopResultBuilder]: At program point L13(lines 8 14) the Hoare annotation is: (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) [2021-11-12 22:33:25,675 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-11-12 22:33:25,675 INFO L858 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-11-12 22:33:25,675 INFO L854 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) [2021-11-12 22:33:25,679 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:33:25,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:33:25,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:33:25 BoogieIcfgContainer [2021-11-12 22:33:25,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:33:25,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:33:25,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:33:25,693 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:33:25,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:33:24" (3/4) ... [2021-11-12 22:33:25,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:33:25,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-12 22:33:25,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 22:33:25,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:33:25,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:33:25,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:33:25,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:33:25,738 INFO L158 Benchmark]: Toolchain (without parser) took 1846.55ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 25.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,738 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 60.8MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:33:25,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 30.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.96ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 44.3MB in the end (delta: -14.1MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,740 INFO L158 Benchmark]: Boogie Preprocessor took 52.11ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,740 INFO L158 Benchmark]: RCFGBuilder took 547.90ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 33.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,741 INFO L158 Benchmark]: TraceAbstraction took 909.09ms. Allocated memory is still 60.8MB. Free memory was 33.4MB in the beginning and 28.1MB in the end (delta: 5.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,742 INFO L158 Benchmark]: Witness Printer took 44.35ms. Allocated memory is still 60.8MB. Free memory was 28.1MB in the beginning and 25.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:33:25,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 60.8MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 30.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.96ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 44.3MB in the end (delta: -14.1MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.11ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.90ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 33.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 909.09ms. Allocated memory is still 60.8MB. Free memory was 33.4MB in the beginning and 28.1MB in the end (delta: 5.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 44.35ms. Allocated memory is still 60.8MB. Free memory was 28.1MB in the beginning and 25.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 1.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 1.83ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 1 mSolverCounterSat, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 5 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: cond == 1bv32 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: cond == 1bv32 RESULT: Ultimate proved your program to be correct! [2021-11-12 22:33:25,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d827e181-0369-4113-8db5-8025e1811899/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE