./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur --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 b459ef52e6f503a483dfcee5782d400696002c8f6100462cc05f5e2316fe0d4b --- 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-38b53e6 [2022-11-26 01:11:22,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:11:22,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:11:22,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:11:22,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:11:22,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:11:22,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:11:22,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:11:22,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:11:22,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:11:22,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:11:22,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:11:22,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:11:22,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:11:22,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:11:22,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:11:22,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:11:22,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:11:22,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:11:22,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:11:22,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:11:22,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:11:22,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:11:22,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:11:22,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:11:22,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:11:22,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:11:22,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:11:22,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:11:22,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:11:22,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:11:22,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:11:22,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:11:22,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:11:22,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:11:22,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:11:22,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:11:22,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:11:22,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:11:22,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:11:22,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:11:22,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-26 01:11:22,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:11:22,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:11:22,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:11:22,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:11:22,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:11:22,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:11:22,971 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:11:22,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:11:22,971 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:11:22,971 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:11:22,972 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:11:22,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:11:22,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:11:22,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:11:22,973 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:11:22,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:11:22,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:11:22,974 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:11:22,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 01:11:22,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 01:11:22,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:11:22,975 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:11:22,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:11:22,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:11:22,976 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 01:11:22,976 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 01:11:22,976 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 01:11:22,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:11:22,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:11:22,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:11:22,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:11:22,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:11:22,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:11:22,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:11:22,978 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:11:22,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:11:22,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:11:22,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:11:22,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:11:22,979 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_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b459ef52e6f503a483dfcee5782d400696002c8f6100462cc05f5e2316fe0d4b [2022-11-26 01:11:23,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:11:23,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:11:23,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:11:23,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:11:23,325 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:11:23,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i [2022-11-26 01:11:26,319 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:11:26,656 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:11:26,657 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i [2022-11-26 01:11:26,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/data/95d19f033/0c95cbe9ff924fe4b9340aefb26cdf8f/FLAG978f83407 [2022-11-26 01:11:26,688 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/data/95d19f033/0c95cbe9ff924fe4b9340aefb26cdf8f [2022-11-26 01:11:26,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:11:26,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:11:26,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:11:26,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:11:26,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:11:26,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:11:26" (1/1) ... [2022-11-26 01:11:26,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c2e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:26, skipping insertion in model container [2022-11-26 01:11:26,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:11:26" (1/1) ... [2022-11-26 01:11:26,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:11:26,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:11:27,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:11:27,112 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:11:27,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:11:27,189 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:11:27,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27 WrapperNode [2022-11-26 01:11:27,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:11:27,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:11:27,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:11:27,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:11:27,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,231 INFO L138 Inliner]: procedures = 111, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-26 01:11:27,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:11:27,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:11:27,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:11:27,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:11:27,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,254 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:11:27,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:11:27,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:11:27,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:11:27,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (1/1) ... [2022-11-26 01:11:27,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:11:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:11:27,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:11:27,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:11:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:11:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:11:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:11:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:11:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:11:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:11:27,462 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:11:27,464 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:11:27,781 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:11:27,829 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:11:27,829 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:11:27,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:27 BoogieIcfgContainer [2022-11-26 01:11:27,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:11:27,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:11:27,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:11:27,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:11:27,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:11:26" (1/3) ... [2022-11-26 01:11:27,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d715248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:11:27, skipping insertion in model container [2022-11-26 01:11:27,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:27" (2/3) ... [2022-11-26 01:11:27,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d715248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:11:27, skipping insertion in model container [2022-11-26 01:11:27,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:27" (3/3) ... [2022-11-26 01:11:27,842 INFO L112 eAbstractionObserver]: Analyzing ICFG b.09-no-inv_assume-alloca.i [2022-11-26 01:11:27,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:11:27,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-26 01:11:27,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:11:27,916 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;@32c39626, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:11:27,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-26 01:11:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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) [2022-11-26 01:11:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 01:11:27,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:27,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 01:11:27,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 3848, now seen corresponding path program 1 times [2022-11-26 01:11:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:27,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830968307] [2022-11-26 01:11:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:28,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:28,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830968307] [2022-11-26 01:11:28,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830968307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:28,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:28,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88383429] [2022-11-26 01:11:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:28,688 INFO L87 Difference]: Start difference. First operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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) [2022-11-26 01:11:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:28,832 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-11-26 01:11:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:28,836 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 [2022-11-26 01:11:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:28,847 INFO L225 Difference]: With dead ends: 47 [2022-11-26 01:11:28,848 INFO L226 Difference]: Without dead ends: 46 [2022-11-26 01:11:28,851 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 [2022-11-26 01:11:28,858 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:28,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 18 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-26 01:11:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-26 01:11:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 22 states have (on average 2.227272727272727) internal successors, (49), 45 states have internal predecessors, (49), 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) [2022-11-26 01:11:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-11-26 01:11:28,891 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 2 [2022-11-26 01:11:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:28,892 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-11-26 01:11:28,892 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) [2022-11-26 01:11:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-11-26 01:11:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 01:11:28,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:28,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 01:11:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:11:28,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 3849, now seen corresponding path program 1 times [2022-11-26 01:11:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:28,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663693774] [2022-11-26 01:11:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:29,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:29,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663693774] [2022-11-26 01:11:29,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663693774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:29,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:29,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569975335] [2022-11-26 01:11:29,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:29,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:29,086 INFO L87 Difference]: Start difference. First operand 46 states and 49 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) [2022-11-26 01:11:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:29,167 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-26 01:11:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:29,168 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 [2022-11-26 01:11:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:29,169 INFO L225 Difference]: With dead ends: 39 [2022-11-26 01:11:29,170 INFO L226 Difference]: Without dead ends: 39 [2022-11-26 01:11:29,174 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 [2022-11-26 01:11:29,177 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:29,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 18 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-26 01:11:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-26 01:11:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 38 states have internal predecessors, (42), 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) [2022-11-26 01:11:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-26 01:11:29,191 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 2 [2022-11-26 01:11:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:29,194 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-26 01:11:29,195 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) [2022-11-26 01:11:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-26 01:11:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:11:29,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:29,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:11:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:11:29,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash 119264, now seen corresponding path program 1 times [2022-11-26 01:11:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:29,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553780800] [2022-11-26 01:11:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:29,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553780800] [2022-11-26 01:11:29,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553780800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:29,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:29,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915163645] [2022-11-26 01:11:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:29,311 INFO L87 Difference]: Start difference. First operand 39 states and 42 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) [2022-11-26 01:11:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:29,368 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-26 01:11:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:29,369 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 [2022-11-26 01:11:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:29,372 INFO L225 Difference]: With dead ends: 35 [2022-11-26 01:11:29,372 INFO L226 Difference]: Without dead ends: 35 [2022-11-26 01:11:29,373 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 [2022-11-26 01:11:29,381 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:29,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 14 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:11:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-26 01:11:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-26 01:11:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 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) [2022-11-26 01:11:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-26 01:11:29,390 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 3 [2022-11-26 01:11:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:29,391 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-26 01:11:29,391 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) [2022-11-26 01:11:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-26 01:11:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:11:29,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:29,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:11:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:11:29,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:29,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash 119265, now seen corresponding path program 1 times [2022-11-26 01:11:29,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:29,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215169411] [2022-11-26 01:11:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:29,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:29,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215169411] [2022-11-26 01:11:29,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215169411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:29,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:29,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:29,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096254020] [2022-11-26 01:11:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:29,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:29,504 INFO L87 Difference]: Start difference. First operand 35 states and 38 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) [2022-11-26 01:11:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:29,550 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-26 01:11:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:29,551 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 [2022-11-26 01:11:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:29,554 INFO L225 Difference]: With dead ends: 31 [2022-11-26 01:11:29,554 INFO L226 Difference]: Without dead ends: 31 [2022-11-26 01:11:29,554 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 [2022-11-26 01:11:29,561 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:29,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:11:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-26 01:11:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-26 01:11:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 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) [2022-11-26 01:11:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-26 01:11:29,572 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 3 [2022-11-26 01:11:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:29,573 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-26 01:11:29,573 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) [2022-11-26 01:11:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-26 01:11:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:11:29,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:29,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:11:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:11:29,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:29,576 INFO L85 PathProgramCache]: Analyzing trace with hash 3697163, now seen corresponding path program 1 times [2022-11-26 01:11:29,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:29,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967431247] [2022-11-26 01:11:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:29,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:29,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967431247] [2022-11-26 01:11:29,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967431247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:29,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:29,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:29,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621536642] [2022-11-26 01:11:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:29,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:29,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:29,650 INFO L87 Difference]: Start difference. First operand 31 states and 34 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) [2022-11-26 01:11:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:29,701 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-26 01:11:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:29,702 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 [2022-11-26 01:11:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:29,702 INFO L225 Difference]: With dead ends: 27 [2022-11-26 01:11:29,702 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 01:11:29,703 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 [2022-11-26 01:11:29,703 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:29,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:11:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 01:11:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-26 01:11:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-11-26 01:11:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-26 01:11:29,707 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2022-11-26 01:11:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:29,707 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-26 01:11:29,708 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) [2022-11-26 01:11:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-26 01:11:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:11:29,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:29,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:11:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:11:29,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash 3697164, now seen corresponding path program 1 times [2022-11-26 01:11:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:29,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098355821] [2022-11-26 01:11:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:29,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:29,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098355821] [2022-11-26 01:11:29,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098355821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:29,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:29,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:29,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184914757] [2022-11-26 01:11:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:29,817 INFO L87 Difference]: Start difference. First operand 27 states and 30 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) [2022-11-26 01:11:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:29,853 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-26 01:11:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:29,854 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 [2022-11-26 01:11:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:29,854 INFO L225 Difference]: With dead ends: 23 [2022-11-26 01:11:29,854 INFO L226 Difference]: Without dead ends: 23 [2022-11-26 01:11:29,855 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 [2022-11-26 01:11:29,856 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:11:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-26 01:11:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-26 01:11:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2022-11-26 01:11:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-26 01:11:29,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2022-11-26 01:11:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-26 01:11:29,864 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) [2022-11-26 01:11:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-26 01:11:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:11:29,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:29,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:11:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:11:29,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-26 01:11:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1517886043, now seen corresponding path program 1 times [2022-11-26 01:11:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:29,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733233522] [2022-11-26 01:11:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:30,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:30,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733233522] [2022-11-26 01:11:30,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733233522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:30,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:30,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:11:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398010293] [2022-11-26 01:11:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:30,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:11:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:11:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:11:30,161 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:30,206 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-26 01:11:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:11:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 01:11:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:30,207 INFO L225 Difference]: With dead ends: 22 [2022-11-26 01:11:30,207 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 01:11:30,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:11:30,208 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:30,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:11:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 01:11:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 01:11:30,210 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) [2022-11-26 01:11:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 01:11:30,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-11-26 01:11:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:30,210 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 01:11:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 01:11:30,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 01:11:30,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-26 01:11:30,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-26 01:11:30,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-26 01:11:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-26 01:11:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-26 01:11:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-11-26 01:11:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-26 01:11:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-26 01:11:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-26 01:11:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-26 01:11:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-26 01:11:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-26 01:11:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-26 01:11:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-26 01:11:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-26 01:11:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-26 01:11:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-26 01:11:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-26 01:11:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-26 01:11:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-26 01:11:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-26 01:11:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-26 01:11:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-26 01:11:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-26 01:11:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-26 01:11:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-26 01:11:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-26 01:11:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-26 01:11:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-26 01:11:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-26 01:11:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2022-11-26 01:11:30,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:11:30,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:11:30,228 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:11:30,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:11:30 BoogieIcfgContainer [2022-11-26 01:11:30,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:11:30,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:11:30,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:11:30,232 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:11:30,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:27" (3/4) ... [2022-11-26 01:11:30,235 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 01:11:30,246 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-26 01:11:30,246 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-26 01:11:30,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-26 01:11:30,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 01:11:30,294 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 01:11:30,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:11:30,295 INFO L158 Benchmark]: Toolchain (without parser) took 3596.72ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 129.7MB in the beginning and 104.5MB in the end (delta: 25.2MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,295 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:11:30,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.81ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 128.0MB in the end (delta: 1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.53ms. Allocated memory is still 161.5MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,297 INFO L158 Benchmark]: Boogie Preprocessor took 26.48ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 124.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:11:30,297 INFO L158 Benchmark]: RCFGBuilder took 572.82ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 107.1MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,298 INFO L158 Benchmark]: TraceAbstraction took 2396.65ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 106.3MB in the beginning and 107.6MB in the end (delta: -1.3MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,298 INFO L158 Benchmark]: Witness Printer took 62.67ms. Allocated memory is still 195.0MB. Free memory was 107.6MB in the beginning and 104.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:11:30,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.81ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 128.0MB in the end (delta: 1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.53ms. Allocated memory is still 161.5MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.48ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 124.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 572.82ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 107.1MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2396.65ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 106.3MB in the beginning and 107.6MB in the end (delta: -1.3MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Witness Printer took 62.67ms. Allocated memory is still 195.0MB. Free memory was 107.6MB in the beginning and 104.5MB 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: -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: 568]: 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, 54 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 211 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 89 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 240 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 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-26 01:11:30,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980fe554-d098-4994-ba92-43900a42e964/bin/utaipan-ByfvJB40ur/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