./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/a.05-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/a.05-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5dfaa1e7d8e11d61c3d4d0b8b3724f22fd323b68a720b01bc26596e3781d27f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:50:50,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:50:50,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:50:50,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:50:50,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:50:50,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:50:50,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:50:50,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:50:50,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:50:50,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:50:50,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:50:50,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:50:50,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:50:50,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:50:50,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:50:50,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:50:50,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:50:50,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:50:50,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:50:50,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:50:50,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:50:50,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:50:50,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:50:50,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:50:50,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:50:50,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:50:50,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:50:50,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:50:50,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:50:50,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:50:50,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:50:50,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:50:50,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:50:50,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:50:50,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:50:50,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:50:50,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:50:50,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:50:50,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:50:50,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:50:50,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:50:50,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-19 06:50:51,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:50:51,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:50:51,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:50:51,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:50:51,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:50:51,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:50:51,017 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:50:51,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:50:51,017 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:50:51,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:50:51,017 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:50:51,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:50:51,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:50:51,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:50:51,018 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:50:51,018 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:50:51,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:50:51,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:50:51,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:50:51,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:50:51,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:50:51,020 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:50:51,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:50:51,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:50:51,021 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:50:51,021 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:50:51,021 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:50:51,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:50:51,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:50:51,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:50:51,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:50:51,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:50:51,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:51,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:50:51,023 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:50:51,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:50:51,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:50:51,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:50:51,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:50:51,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dfaa1e7d8e11d61c3d4d0b8b3724f22fd323b68a720b01bc26596e3781d27f8 [2022-11-19 06:50:51,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:50:51,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:50:51,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:50:51,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:50:51,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:50:51,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-memory-alloca/a.05-alloca.i [2022-11-19 06:50:51,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/data/a03cdbacd/a41c62565bd840248f29c14ddfeeef16/FLAG47bca6d84 [2022-11-19 06:50:51,961 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:50:51,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/sv-benchmarks/c/termination-memory-alloca/a.05-alloca.i [2022-11-19 06:50:51,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/data/a03cdbacd/a41c62565bd840248f29c14ddfeeef16/FLAG47bca6d84 [2022-11-19 06:50:52,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/data/a03cdbacd/a41c62565bd840248f29c14ddfeeef16 [2022-11-19 06:50:52,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:50:52,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:50:52,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:52,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:50:52,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:50:52,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4ace43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52, skipping insertion in model container [2022-11-19 06:50:52,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:50:52,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:50:52,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:52,711 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:50:52,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:52,800 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:50:52,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52 WrapperNode [2022-11-19 06:50:52,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:52,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:52,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:50:52,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:50:52,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,848 INFO L138 Inliner]: procedures = 111, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-11-19 06:50:52,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:52,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:50:52,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:50:52,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:50:52,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:50:52,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:50:52,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:50:52,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:50:52,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (1/1) ... [2022-11-19 06:50:52,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:52,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:50:52,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:50:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:50:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:50:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:50:52,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:50:52,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:50:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:50:53,181 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:50:53,183 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:50:53,433 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:50:53,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:50:53,493 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:50:53,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:53 BoogieIcfgContainer [2022-11-19 06:50:53,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:50:53,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:50:53,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:50:53,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:50:53,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:50:52" (1/3) ... [2022-11-19 06:50:53,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c38f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:53, skipping insertion in model container [2022-11-19 06:50:53,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:52" (2/3) ... [2022-11-19 06:50:53,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c38f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:53, skipping insertion in model container [2022-11-19 06:50:53,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:53" (3/3) ... [2022-11-19 06:50:53,507 INFO L112 eAbstractionObserver]: Analyzing ICFG a.05-alloca.i [2022-11-19 06:50:53,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:50:53,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-19 06:50:53,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:50:53,603 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dcf0d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:50:53,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-19 06:50:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-11-19 06:50:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:50:53,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:53,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:50:53,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:53,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2918, now seen corresponding path program 1 times [2022-11-19 06:50:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:53,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290668326] [2022-11-19 06:50:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:54,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290668326] [2022-11-19 06:50:54,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290668326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:54,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:54,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835886531] [2022-11-19 06:50:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:54,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,132 INFO L87 Difference]: Start difference. First operand has 33 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 32 states have internal predecessors, (35), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:50:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:54,207 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-19 06:50:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 06:50:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:54,218 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:50:54,218 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 06:50:54,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,227 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:54,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:50:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 06:50:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 06:50:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 29 states have internal predecessors, (31), 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) [2022-11-19 06:50:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-19 06:50:54,261 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 2 [2022-11-19 06:50:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:54,261 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-19 06:50:54,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:50:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-19 06:50:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:50:54,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:54,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:50:54,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:50:54,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2919, now seen corresponding path program 1 times [2022-11-19 06:50:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:54,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076535295] [2022-11-19 06:50:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:54,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:54,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076535295] [2022-11-19 06:50:54,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076535295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:54,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:54,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111326381] [2022-11-19 06:50:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,498 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:50:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:54,546 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-19 06:50:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:54,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 06:50:54,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:54,548 INFO L225 Difference]: With dead ends: 28 [2022-11-19 06:50:54,548 INFO L226 Difference]: Without dead ends: 28 [2022-11-19 06:50:54,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,554 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-19 06:50:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-19 06:50:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 2.230769230769231) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-11-19 06:50:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-19 06:50:54,565 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 2 [2022-11-19 06:50:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:54,568 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-19 06:50:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:50:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-19 06:50:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:50:54,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:54,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:50:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:50:54,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 90434, now seen corresponding path program 1 times [2022-11-19 06:50:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128200240] [2022-11-19 06:50:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:54,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128200240] [2022-11-19 06:50:54,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128200240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:54,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:54,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:54,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722895837] [2022-11-19 06:50:54,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:54,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,665 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 06:50:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:54,698 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-19 06:50:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:54,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 06:50:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:54,700 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:50:54,700 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 06:50:54,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,702 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 06:50:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 06:50:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-11-19 06:50:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-19 06:50:54,705 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 3 [2022-11-19 06:50:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:54,706 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-19 06:50:54,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 06:50:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-19 06:50:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:50:54,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:54,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:50:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:50:54,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 90435, now seen corresponding path program 1 times [2022-11-19 06:50:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:54,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906239957] [2022-11-19 06:50:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:54,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906239957] [2022-11-19 06:50:54,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906239957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:54,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:54,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261461101] [2022-11-19 06:50:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:54,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,850 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 06:50:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:54,896 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-19 06:50:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 06:50:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:54,900 INFO L225 Difference]: With dead ends: 18 [2022-11-19 06:50:54,900 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:50:54,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,910 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 7 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:50:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:50:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-11-19 06:50:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-19 06:50:54,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2022-11-19 06:50:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:54,921 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-19 06:50:54,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 06:50:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-19 06:50:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:50:54,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:54,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:50:54,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:50:54,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2803433, now seen corresponding path program 1 times [2022-11-19 06:50:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:54,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364395532] [2022-11-19 06:50:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:54,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:54,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:54,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364395532] [2022-11-19 06:50:54,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364395532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:54,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:54,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:54,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166456743] [2022-11-19 06:50:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:54,992 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 06:50:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:55,040 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-19 06:50:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:50:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:55,041 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:50:55,041 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 06:50:55,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:55,042 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:55,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 06:50:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 06:50:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-19 06:50:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-19 06:50:55,048 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-11-19 06:50:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:55,048 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-19 06:50:55,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 06:50:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-19 06:50:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:50:55,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:55,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:50:55,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:50:55,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:55,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2803434, now seen corresponding path program 1 times [2022-11-19 06:50:55,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:55,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884494511] [2022-11-19 06:50:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:55,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:55,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884494511] [2022-11-19 06:50:55,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884494511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:55,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:55,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:50:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047698772] [2022-11-19 06:50:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:55,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:55,153 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 06:50:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:55,173 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-19 06:50:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:50:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:55,174 INFO L225 Difference]: With dead ends: 14 [2022-11-19 06:50:55,174 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:50:55,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:55,175 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:55,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:50:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 06:50:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-19 06:50:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-19 06:50:55,178 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2022-11-19 06:50:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:55,178 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-19 06:50:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 06:50:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-19 06:50:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:50:55,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:55,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:50:55,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-19 06:50:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -121290769, now seen corresponding path program 1 times [2022-11-19 06:50:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458305384] [2022-11-19 06:50:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:55,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458305384] [2022-11-19 06:50:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458305384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:55,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:55,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:50:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376208501] [2022-11-19 06:50:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:50:55,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:50:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:50:55,587 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-19 06:50:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:55,620 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-19 06:50:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:50:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2022-11-19 06:50:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:55,622 INFO L225 Difference]: With dead ends: 13 [2022-11-19 06:50:55,622 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:50:55,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:50:55,623 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:55,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:50:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:50:55,624 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) [2022-11-19 06:50:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:50:55,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-11-19 06:50:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:55,625 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:50:55,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-19 06:50:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:50:55,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:50:55,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 19 remaining) [2022-11-19 06:50:55,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2022-11-19 06:50:55,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2022-11-19 06:50:55,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2022-11-19 06:50:55,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2022-11-19 06:50:55,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2022-11-19 06:50:55,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2022-11-19 06:50:55,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2022-11-19 06:50:55,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2022-11-19 06:50:55,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2022-11-19 06:50:55,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2022-11-19 06:50:55,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2022-11-19 06:50:55,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 19 remaining) [2022-11-19 06:50:55,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 19 remaining) [2022-11-19 06:50:55,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2022-11-19 06:50:55,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2022-11-19 06:50:55,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2022-11-19 06:50:55,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2022-11-19 06:50:55,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2022-11-19 06:50:55,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:50:55,650 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:55,652 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:50:55,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:50:55 BoogieIcfgContainer [2022-11-19 06:50:55,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:50:55,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:50:55,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:50:55,657 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:50:55,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:53" (3/4) ... [2022-11-19 06:50:55,660 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:50:55,670 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-19 06:50:55,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-19 06:50:55,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:50:55,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:50:55,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:50:55,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:50:55,705 INFO L158 Benchmark]: Toolchain (without parser) took 3436.40ms. Allocated memory was 132.1MB in the beginning and 182.5MB in the end (delta: 50.3MB). Free memory was 96.9MB in the beginning and 153.8MB in the end (delta: -56.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:55,705 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:55,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.61ms. Allocated memory is still 132.1MB. Free memory was 96.5MB in the beginning and 102.7MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.00ms. Allocated memory is still 132.1MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,706 INFO L158 Benchmark]: Boogie Preprocessor took 55.61ms. Allocated memory is still 132.1MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,706 INFO L158 Benchmark]: RCFGBuilder took 590.44ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 83.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,707 INFO L158 Benchmark]: TraceAbstraction took 2157.37ms. Allocated memory was 132.1MB in the beginning and 182.5MB in the end (delta: 50.3MB). Free memory was 83.3MB in the beginning and 156.9MB in the end (delta: -73.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,707 INFO L158 Benchmark]: Witness Printer took 47.62ms. Allocated memory is still 182.5MB. Free memory was 156.9MB in the beginning and 153.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.61ms. Allocated memory is still 132.1MB. Free memory was 96.5MB in the beginning and 102.7MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.00ms. Allocated memory is still 132.1MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.61ms. Allocated memory is still 132.1MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.44ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 83.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2157.37ms. Allocated memory was 132.1MB in the beginning and 182.5MB in the end (delta: 50.3MB). Free memory was 83.3MB in the beginning and 156.9MB in the end (delta: -73.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Witness Printer took 47.62ms. Allocated memory is still 182.5MB. Free memory was 156.9MB in the beginning and 153.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 560]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 52 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 06:50:55,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb902e3-fa44-4359-ac57-7848de836af0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE