./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE --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 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 ...................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:56:34,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:56:34,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:56:34,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:56:34,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:56:34,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:56:34,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:56:34,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:56:34,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:56:34,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:56:34,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:56:34,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:56:34,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:56:34,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:56:34,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:56:34,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:56:34,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:56:34,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:56:34,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:56:34,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:56:34,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:56:34,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:56:34,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:56:34,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:56:34,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:56:34,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:56:34,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:56:34,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:56:34,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:56:34,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:56:34,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:56:34,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:56:34,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:56:34,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:56:34,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:56:34,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:56:34,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:56:34,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:56:34,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:56:34,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:56:34,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:56:34,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:56:34,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:56:34,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:56:34,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:56:34,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:56:34,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:56:34,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:56:34,956 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:56:34,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:56:34,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:56:34,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:56:34,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:56:34,958 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:56:34,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:56:34,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:56:34,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:56:34,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:56:34,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:56:34,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:56:34,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:56:34,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:56:34,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:56:34,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:56:34,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:56:34,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:56:34,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:56:34,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:56:34,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:56:34,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:56:34,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:56:34,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:56:34,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:34,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:56:34,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:56:34,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:56:34,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:56:34,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:56:34,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:56:34,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:56:34,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:56:34,970 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_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 [2021-10-24 09:56:35,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:56:35,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:56:35,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:56:35,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:56:35,431 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:56:35,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-10-24 09:56:35,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/data/7d531de7e/37b7743fdff24fb885a9d2d6944972ca/FLAG0912953b4 [2021-10-24 09:56:36,098 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:56:36,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-10-24 09:56:36,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/data/7d531de7e/37b7743fdff24fb885a9d2d6944972ca/FLAG0912953b4 [2021-10-24 09:56:36,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/data/7d531de7e/37b7743fdff24fb885a9d2d6944972ca [2021-10-24 09:56:36,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:56:36,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:56:36,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:36,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:56:36,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:56:36,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b76327a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36, skipping insertion in model container [2021-10-24 09:56:36,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:56:36,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:56:36,797 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_f2af9380-78f4-4708-b175-41e7dc0c7e38/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-10-24 09:56:36,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:36,834 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:56:36,852 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_f2af9380-78f4-4708-b175-41e7dc0c7e38/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-10-24 09:56:36,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:36,872 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:56:36,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36 WrapperNode [2021-10-24 09:56:36,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:36,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:36,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:56:36,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:56:36,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:36,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:56:36,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:56:36,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:56:36,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:56:36,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:56:36,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:56:36,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:56:36,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (1/1) ... [2021-10-24 09:56:36,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:37,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:56:37,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:56:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:56:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:56:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:56:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:56:37,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:56:37,330 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 09:56:37,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:37 BoogieIcfgContainer [2021-10-24 09:56:37,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:56:37,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:56:37,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:56:37,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:56:37,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:56:36" (1/3) ... [2021-10-24 09:56:37,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67621a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:37, skipping insertion in model container [2021-10-24 09:56:37,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:36" (2/3) ... [2021-10-24 09:56:37,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67621a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:37, skipping insertion in model container [2021-10-24 09:56:37,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:37" (3/3) ... [2021-10-24 09:56:37,342 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2021-10-24 09:56:37,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:56:37,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 09:56:37,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:56:37,412 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:56:37,413 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 09:56:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:56:37,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:37,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:56:37,451 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:56:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2619623, now seen corresponding path program 1 times [2021-10-24 09:56:37,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:37,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91224533] [2021-10-24 09:56:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:37,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:56:37,632 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:56:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:56:37,680 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:56:37,683 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:56:37,684 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:56:37,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:56:37,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:56:37,696 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:56:37,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:56:37 BoogieIcfgContainer [2021-10-24 09:56:37,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:56:37,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:56:37,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:56:37,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:56:37,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:37" (3/4) ... [2021-10-24 09:56:37,733 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:56:37,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:56:37,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:56:37,801 INFO L168 Benchmark]: Toolchain (without parser) took 1311.14 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 40.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,802 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:37,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.75 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 68.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,810 INFO L168 Benchmark]: Boogie Preprocessor took 49.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:37,812 INFO L168 Benchmark]: RCFGBuilder took 361.60 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 55.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,813 INFO L168 Benchmark]: TraceAbstraction took 389.24 ms. Allocated memory is still 92.3 MB. Free memory was 55.2 MB in the beginning and 42.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,814 INFO L168 Benchmark]: Witness Printer took 69.03 ms. Allocated memory is still 92.3 MB. Free memory was 42.3 MB in the beginning and 40.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:37,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.75 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 68.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.60 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 55.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 389.24 ms. Allocated memory is still 92.3 MB. Free memory was 55.2 MB in the beginning and 42.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 69.03 ms. Allocated memory is still 92.3 MB. Free memory was 42.3 MB in the beginning and 40.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int x=0; [L26] COND TRUE 1 [L16] COND TRUE 1 [L17] x=1 [L6] COND TRUE !(cond) VAL [x=1] [L7] reach_error() VAL [x=1] - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 291.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.5ms SsaConstructionTime, 48.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 09:56:37,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2af9380-78f4-4708-b175-41e7dc0c7e38/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...