./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/quick_sort_split.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/quick_sort_split.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8 --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 e29cb2168e7bab34fbc89c12b0474d2c34d77836 ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:15:33,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:15:33,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:15:33,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:15:33,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:15:33,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:15:33,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:15:33,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:15:33,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:15:33,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:15:33,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:15:33,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:15:33,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:15:33,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:15:33,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:15:33,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:15:33,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:15:33,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:15:33,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:15:33,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:15:33,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:15:33,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:15:33,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:15:33,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:15:33,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:15:33,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:15:33,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:15:33,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:15:33,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:15:33,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:15:33,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:15:33,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:15:33,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:15:33,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:15:33,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:15:33,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:15:33,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:15:33,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:15:33,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:15:33,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:15:33,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:15:33,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:15:33,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:15:33,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:15:33,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:15:33,997 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:15:33,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:15:33,997 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:15:33,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:15:33,997 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:15:33,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:15:33,998 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:15:33,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:15:33,998 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:15:33,998 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:15:33,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:15:33,999 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:15:33,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:15:34,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:15:34,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:15:34,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:15:34,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:15:34,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:15:34,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:15:34,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:15:34,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:15:34,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:15:34,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:15:34,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:15:34,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:15:34,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:15:34,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:15:34,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:34,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:15:34,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:15:34,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:15:34,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:15:34,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:15:34,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:15:34,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:15:34,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:15:34,004 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_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29cb2168e7bab34fbc89c12b0474d2c34d77836 [2021-10-13 07:15:34,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:15:34,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:15:34,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:15:34,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:15:34,257 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:15:34,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/heap-data/quick_sort_split.i [2021-10-13 07:15:34,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/data/edb0c3f76/82e815b435794220bba7775cb64ea037/FLAG05a0ba0d9 [2021-10-13 07:15:34,855 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:15:34,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/sv-benchmarks/c/heap-data/quick_sort_split.i [2021-10-13 07:15:34,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/data/edb0c3f76/82e815b435794220bba7775cb64ea037/FLAG05a0ba0d9 [2021-10-13 07:15:35,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/data/edb0c3f76/82e815b435794220bba7775cb64ea037 [2021-10-13 07:15:35,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:15:35,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:15:35,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:35,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:15:35,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:15:35,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a06b4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35, skipping insertion in model container [2021-10-13 07:15:35,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:15:35,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:15:35,590 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_e4b89071-5343-4ed1-9019-3abd861111ed/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2021-10-13 07:15:35,596 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_e4b89071-5343-4ed1-9019-3abd861111ed/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2021-10-13 07:15:35,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:35,611 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:15:35,667 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_e4b89071-5343-4ed1-9019-3abd861111ed/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2021-10-13 07:15:35,675 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_e4b89071-5343-4ed1-9019-3abd861111ed/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2021-10-13 07:15:35,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:35,712 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:15:35,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35 WrapperNode [2021-10-13 07:15:35,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:35,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:35,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:15:35,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:15:35,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:35,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:15:35,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:15:35,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:15:35,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:15:35,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:15:35,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:15:35,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:15:35,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (1/1) ... [2021-10-13 07:15:35,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:35,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:35,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:15:35,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:15:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:15:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:15:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:15:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:15:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:15:36,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:15:36,544 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-13 07:15:36,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:36 BoogieIcfgContainer [2021-10-13 07:15:36,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:15:36,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:15:36,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:15:36,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:15:36,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:35" (1/3) ... [2021-10-13 07:15:36,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d20ec31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:36, skipping insertion in model container [2021-10-13 07:15:36,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:35" (2/3) ... [2021-10-13 07:15:36,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d20ec31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:36, skipping insertion in model container [2021-10-13 07:15:36,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:36" (3/3) ... [2021-10-13 07:15:36,556 INFO L111 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2021-10-13 07:15:36,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:15:36,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:15:36,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:15:36,613 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, mConcurrency=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 [2021-10-13 07:15:36,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:15:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-10-13 07:15:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:15:36,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:36,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:36,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:36,638 INFO L82 PathProgramCache]: Analyzing trace with hash -159627475, now seen corresponding path program 1 times [2021-10-13 07:15:36,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:36,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447963360] [2021-10-13 07:15:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:36,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:36,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:36,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447963360] [2021-10-13 07:15:36,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447963360] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:36,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:36,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:36,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125887366] [2021-10-13 07:15:36,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:15:36,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:15:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:15:36,802 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:15:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:36,815 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-10-13 07:15:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:15:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 07:15:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:36,823 INFO L225 Difference]: With dead ends: 29 [2021-10-13 07:15:36,823 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:15:36,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:15:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:15:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 07:15:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-10-13 07:15:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-13 07:15:36,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 7 [2021-10-13 07:15:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:36,871 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-13 07:15:36,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:15:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-13 07:15:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:15:36,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:36,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:36,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:15:36,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash 971964560, now seen corresponding path program 1 times [2021-10-13 07:15:36,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:36,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838597955] [2021-10-13 07:15:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:36,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:36,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:36,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838597955] [2021-10-13 07:15:36,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838597955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:36,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:36,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:36,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930325409] [2021-10-13 07:15:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:36,958 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 07:15:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:36,969 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-13 07:15:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-13 07:15:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:36,970 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:15:36,970 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:15:36,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:15:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:15:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-13 07:15:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-13 07:15:36,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-13 07:15:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:36,974 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-13 07:15:36,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 07:15:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-13 07:15:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:15:36,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:36,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:36,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:15:36,976 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:36,977 INFO L82 PathProgramCache]: Analyzing trace with hash 67368722, now seen corresponding path program 1 times [2021-10-13 07:15:36,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:36,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260054768] [2021-10-13 07:15:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:36,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:37,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:37,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260054768] [2021-10-13 07:15:37,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260054768] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:37,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:37,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:37,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320548160] [2021-10-13 07:15:37,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:37,026 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:37,032 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-13 07:15:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2021-10-13 07:15:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:37,033 INFO L225 Difference]: With dead ends: 12 [2021-10-13 07:15:37,034 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:15:37,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:15:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:15:37,035 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) [2021-10-13 07:15:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:15:37,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-13 07:15:37,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:37,035 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:15:37,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:15:37,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:15:37,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:37,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:37,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:15:37,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:15:37,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:37,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:37,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:37,059 INFO L857 garLoopResultBuilder]: For program point L609(lines 609 610) no Hoare annotation was computed. [2021-10-13 07:15:37,060 INFO L857 garLoopResultBuilder]: For program point L609-2(lines 609 610) no Hoare annotation was computed. [2021-10-13 07:15:37,060 INFO L857 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2021-10-13 07:15:37,060 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2021-10-13 07:15:37,060 INFO L857 garLoopResultBuilder]: For program point L610(line 610) no Hoare annotation was computed. [2021-10-13 07:15:37,060 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:15:37,061 INFO L860 garLoopResultBuilder]: At program point L573-1(lines 573 588) the Hoare annotation is: true [2021-10-13 07:15:37,061 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2021-10-13 07:15:37,061 INFO L857 garLoopResultBuilder]: For program point L582-1(lines 582 588) no Hoare annotation was computed. [2021-10-13 07:15:37,061 INFO L860 garLoopResultBuilder]: At program point L582-3(lines 582 588) the Hoare annotation is: true [2021-10-13 07:15:37,062 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:15:37,062 INFO L857 garLoopResultBuilder]: For program point L603-1(lines 591 613) no Hoare annotation was computed. [2021-10-13 07:15:37,062 INFO L857 garLoopResultBuilder]: For program point L608-1(lines 591 613) no Hoare annotation was computed. [2021-10-13 07:15:37,062 INFO L857 garLoopResultBuilder]: For program point L604(lines 604 605) no Hoare annotation was computed. [2021-10-13 07:15:37,063 INFO L857 garLoopResultBuilder]: For program point L604-2(lines 604 605) no Hoare annotation was computed. [2021-10-13 07:15:37,063 INFO L853 garLoopResultBuilder]: At program point L596-2(lines 596 602) the Hoare annotation is: (and (= ULTIMATE.start_main_~low~0.offset 0) (= ULTIMATE.start_main_~high~0.base 0) (= ULTIMATE.start_main_~low~0.base 0) (= ULTIMATE.start_main_~high~0.offset 0)) [2021-10-13 07:15:37,067 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:15:37,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:15:37 BoogieIcfgContainer [2021-10-13 07:15:37,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:15:37,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:15:37,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:15:37,080 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:15:37,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:36" (3/4) ... [2021-10-13 07:15:37,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:15:37,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-13 07:15:37,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:15:37,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:15:37,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:15:37,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:15:37,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:15:37,142 INFO L168 Benchmark]: Toolchain (without parser) took 1916.41 ms. Allocated memory is still 123.7 MB. Free memory was 82.9 MB in the beginning and 81.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,142 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 123.7 MB. Free memory is still 101.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:37,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.81 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 91.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.36 ms. Allocated memory is still 123.7 MB. Free memory was 91.8 MB in the beginning and 89.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,143 INFO L168 Benchmark]: Boogie Preprocessor took 62.74 ms. Allocated memory is still 123.7 MB. Free memory was 89.7 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,144 INFO L168 Benchmark]: RCFGBuilder took 697.73 ms. Allocated memory is still 123.7 MB. Free memory was 88.3 MB in the beginning and 66.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,144 INFO L168 Benchmark]: TraceAbstraction took 530.46 ms. Allocated memory is still 123.7 MB. Free memory was 66.0 MB in the beginning and 84.7 MB in the end (delta: -18.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:37,145 INFO L168 Benchmark]: Witness Printer took 60.65 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 81.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:37,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 123.7 MB. Free memory is still 101.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.81 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 91.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.36 ms. Allocated memory is still 123.7 MB. Free memory was 91.8 MB in the beginning and 89.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.74 ms. Allocated memory is still 123.7 MB. Free memory was 89.7 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 697.73 ms. Allocated memory is still 123.7 MB. Free memory was 88.3 MB in the beginning and 66.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 530.46 ms. Allocated memory is still 123.7 MB. Free memory was 66.0 MB in the beginning and 84.7 MB in the end (delta: -18.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 60.65 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 81.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 605]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 610]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 462.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 63.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 19.5ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 40.2ms SatisfiabilityAnalysisTime, 125.8ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 2 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 596]: Loop Invariant Derived loop invariant: ((low == 0 && high == 0) && low == 0) && high == 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:15:37,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b89071-5343-4ed1-9019-3abd861111ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...