./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strlcpy.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strlcpy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2292e98244edafad4d7dc9607780b552ab07213ed34494d4f4d17ad8279c4d0 --- 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-b5237d8 [2022-11-21 09:04:55,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:04:55,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:04:55,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:04:55,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:04:55,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:04:55,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:04:55,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:04:55,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:04:55,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:04:55,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:04:55,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:04:55,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:04:55,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:04:55,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:04:55,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:04:55,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:04:55,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:04:55,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:04:55,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:04:55,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:04:55,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:04:55,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:04:55,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:04:55,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:04:55,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:04:55,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:04:55,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:04:55,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:04:55,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:04:55,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:04:55,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:04:55,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:04:55,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:04:55,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:04:55,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:04:55,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:04:55,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:04:55,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:04:55,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:04:55,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:04:55,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-21 09:04:55,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:04:55,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:04:55,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:04:55,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:04:55,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:04:55,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:04:55,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:04:55,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:04:55,992 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:04:55,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:04:55,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:04:55,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:04:55,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:04:55,994 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:04:55,994 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:04:55,995 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:04:55,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:04:55,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:04:55,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:04:55,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:04:55,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:04:55,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:04:55,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:55,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:04:55,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:04:55,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:04:55,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:04:55,998 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_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2292e98244edafad4d7dc9607780b552ab07213ed34494d4f4d17ad8279c4d0 [2022-11-21 09:04:56,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:04:56,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:04:56,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:04:56,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:04:56,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:04:56,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-dietlibc/strlcpy.i [2022-11-21 09:04:59,822 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:05:00,189 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:05:00,194 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/sv-benchmarks/c/termination-dietlibc/strlcpy.i [2022-11-21 09:05:00,210 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/data/e16b0a688/b836a272729144128aad1b8f2f0c4e33/FLAGc0d91fcae [2022-11-21 09:05:00,241 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/data/e16b0a688/b836a272729144128aad1b8f2f0c4e33 [2022-11-21 09:05:00,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:05:00,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:05:00,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:05:00,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:05:00,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:05:00,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2147f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00, skipping insertion in model container [2022-11-21 09:05:00,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:05:00,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:05:00,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:05:00,789 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:05:00,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:05:00,885 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:05:00,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00 WrapperNode [2022-11-21 09:05:00,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:05:00,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:05:00,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:05:00,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:05:00,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,958 INFO L138 Inliner]: procedures = 113, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2022-11-21 09:05:00,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:05:00,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:05:00,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:05:00,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:05:00,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:00,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:05:00,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:05:00,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:05:00,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:05:00,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (1/1) ... [2022-11-21 09:05:01,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:05:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:01,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:05:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:05:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:05:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:05:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:05:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:05:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:05:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:05:01,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:05:01,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:05:01,494 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:05:01,507 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:05:01,514 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 09:05:01,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:01 BoogieIcfgContainer [2022-11-21 09:05:01,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:05:01,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:05:01,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:05:01,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:05:01,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:05:00" (1/3) ... [2022-11-21 09:05:01,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2573ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:01, skipping insertion in model container [2022-11-21 09:05:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:00" (2/3) ... [2022-11-21 09:05:01,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2573ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:01, skipping insertion in model container [2022-11-21 09:05:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:01" (3/3) ... [2022-11-21 09:05:01,527 INFO L112 eAbstractionObserver]: Analyzing ICFG strlcpy.i [2022-11-21 09:05:01,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:05:01,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-21 09:05:01,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:05:01,674 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;@787793b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:05:01,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-21 09:05:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 35 states have internal predecessors, (46), 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) [2022-11-21 09:05:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 09:05:01,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:01,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 09:05:01,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 925686, now seen corresponding path program 1 times [2022-11-21 09:05:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:01,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372841325] [2022-11-21 09:05:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:01,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:01,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372841325] [2022-11-21 09:05:01,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372841325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:01,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:01,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:05:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586359574] [2022-11-21 09:05:01,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:01,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:05:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:05:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:05:01,937 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 35 states have internal predecessors, (46), 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 2.0) internal successors, (4), 3 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) [2022-11-21 09:05:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:02,003 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-11-21 09:05:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:05:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2022-11-21 09:05:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:02,016 INFO L225 Difference]: With dead ends: 37 [2022-11-21 09:05:02,017 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 09:05:02,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:05:02,029 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:02,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 09:05:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 09:05:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-11-21 09:05:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-21 09:05:02,080 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 4 [2022-11-21 09:05:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:02,081 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-21 09:05:02,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-11-21 09:05:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-21 09:05:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 09:05:02,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:02,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 09:05:02,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:05:02,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-11-21 09:05:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:02,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015842805] [2022-11-21 09:05:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:02,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:02,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015842805] [2022-11-21 09:05:02,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015842805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:02,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:02,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:05:02,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083467813] [2022-11-21 09:05:02,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:05:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:05:02,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:05:02,259 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-11-21 09:05:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:02,335 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-11-21 09:05:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:05:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2022-11-21 09:05:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:02,337 INFO L225 Difference]: With dead ends: 33 [2022-11-21 09:05:02,339 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 09:05:02,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:05:02,343 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 09:05:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-21 09:05:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 32 states have internal predecessors, (40), 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) [2022-11-21 09:05:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-21 09:05:02,356 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 4 [2022-11-21 09:05:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:02,357 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-21 09:05:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-11-21 09:05:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-21 09:05:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 09:05:02,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:02,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 09:05:02,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:05:02,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:02,365 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-11-21 09:05:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:02,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861677400] [2022-11-21 09:05:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:02,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:02,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861677400] [2022-11-21 09:05:02,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861677400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:05:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119619285] [2022-11-21 09:05:02,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:02,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:02,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:02,761 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-21 09:05:02,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:02,803 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-21 09:05:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:02,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2022-11-21 09:05:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:02,805 INFO L225 Difference]: With dead ends: 34 [2022-11-21 09:05:02,805 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 09:05:02,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:02,807 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 62 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 09:05:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-11-21 09:05:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 31 states have internal predecessors, (39), 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) [2022-11-21 09:05:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-21 09:05:02,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 4 [2022-11-21 09:05:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:02,814 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-21 09:05:02,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-21 09:05:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-21 09:05:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 09:05:02,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:02,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:02,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:05:02,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:02,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782705, now seen corresponding path program 1 times [2022-11-21 09:05:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980194841] [2022-11-21 09:05:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980194841] [2022-11-21 09:05:02,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980194841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:02,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:02,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:05:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251544223] [2022-11-21 09:05:02,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:02,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:02,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:02,986 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:03,032 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-21 09:05:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:03,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 09:05:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:03,034 INFO L225 Difference]: With dead ends: 33 [2022-11-21 09:05:03,034 INFO L226 Difference]: Without dead ends: 32 [2022-11-21 09:05:03,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:03,038 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:03,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-21 09:05:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-21 09:05:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 31 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) [2022-11-21 09:05:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-21 09:05:03,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 7 [2022-11-21 09:05:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:03,044 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-21 09:05:03,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-21 09:05:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 09:05:03,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:03,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:03,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:05:03,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1333227602, now seen corresponding path program 1 times [2022-11-21 09:05:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:03,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283978734] [2022-11-21 09:05:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:03,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283978734] [2022-11-21 09:05:03,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283978734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:03,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:03,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942041456] [2022-11-21 09:05:03,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:05:03,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:03,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:05:03,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:03,443 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-11-21 09:05:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:03,549 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-11-21 09:05:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:05:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-21 09:05:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:03,551 INFO L225 Difference]: With dead ends: 49 [2022-11-21 09:05:03,552 INFO L226 Difference]: Without dead ends: 49 [2022-11-21 09:05:03,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:03,553 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:03,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 71 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-21 09:05:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-11-21 09:05:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.64) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-11-21 09:05:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-21 09:05:03,561 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 10 [2022-11-21 09:05:03,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:03,563 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-21 09:05:03,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-11-21 09:05:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-21 09:05:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 09:05:03,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:03,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:03,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:05:03,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1333227601, now seen corresponding path program 1 times [2022-11-21 09:05:03,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:03,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877913216] [2022-11-21 09:05:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:03,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:03,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877913216] [2022-11-21 09:05:03,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877913216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:03,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:03,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:05:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077906673] [2022-11-21 09:05:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:03,734 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-21 09:05:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:03,815 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-21 09:05:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:03,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-21 09:05:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:03,819 INFO L225 Difference]: With dead ends: 33 [2022-11-21 09:05:03,820 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 09:05:03,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:03,821 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:03,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 44 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 09:05:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-21 09:05:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.56) internal successors, (39), 32 states have internal predecessors, (39), 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) [2022-11-21 09:05:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-21 09:05:03,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2022-11-21 09:05:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:03,827 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-21 09:05:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-21 09:05:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-21 09:05:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:05:03,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:03,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:05:03,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1618786096, now seen corresponding path program 1 times [2022-11-21 09:05:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:03,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673501639] [2022-11-21 09:05:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:04,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673501639] [2022-11-21 09:05:04,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673501639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:04,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:04,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:05:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668648565] [2022-11-21 09:05:04,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:04,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:04,012 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:04,062 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-11-21 09:05:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:04,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-21 09:05:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:04,066 INFO L225 Difference]: With dead ends: 32 [2022-11-21 09:05:04,066 INFO L226 Difference]: Without dead ends: 32 [2022-11-21 09:05:04,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:04,075 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:04,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-21 09:05:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-21 09:05:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.52) internal successors, (38), 31 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) [2022-11-21 09:05:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-21 09:05:04,084 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2022-11-21 09:05:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:04,084 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-21 09:05:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-21 09:05:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:05:04,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:04,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:05:04,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1618786095, now seen corresponding path program 1 times [2022-11-21 09:05:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:04,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403608274] [2022-11-21 09:05:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:04,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403608274] [2022-11-21 09:05:04,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403608274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:04,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:04,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:04,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407275507] [2022-11-21 09:05:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:04,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:05:04,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:05:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:04,441 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:04,559 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2022-11-21 09:05:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:05:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-21 09:05:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:04,563 INFO L225 Difference]: With dead ends: 44 [2022-11-21 09:05:04,563 INFO L226 Difference]: Without dead ends: 44 [2022-11-21 09:05:04,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:05:04,565 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:04,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-21 09:05:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-11-21 09:05:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 34 states have internal predecessors, (43), 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) [2022-11-21 09:05:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-11-21 09:05:04,570 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2022-11-21 09:05:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:04,570 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-11-21 09:05:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-11-21 09:05:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:05:04,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:04,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:04,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:05:04,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:04,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1619617326, now seen corresponding path program 1 times [2022-11-21 09:05:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:04,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067815964] [2022-11-21 09:05:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:04,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067815964] [2022-11-21 09:05:04,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067815964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:04,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:04,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:04,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729645505] [2022-11-21 09:05:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:04,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:05:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:05:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:04,729 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:04,796 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-11-21 09:05:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:05:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-21 09:05:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:04,799 INFO L225 Difference]: With dead ends: 34 [2022-11-21 09:05:04,799 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 09:05:04,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:04,800 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:04,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 42 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 09:05:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 09:05:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.5) internal successors, (42), 33 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) [2022-11-21 09:05:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-21 09:05:04,806 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 11 [2022-11-21 09:05:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:04,806 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-21 09:05:04,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-21 09:05:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-21 09:05:04,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:05:04,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:04,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:04,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:05:04,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1619617325, now seen corresponding path program 1 times [2022-11-21 09:05:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:04,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902986387] [2022-11-21 09:05:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:05,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902986387] [2022-11-21 09:05:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902986387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:05,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:05:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700932866] [2022-11-21 09:05:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:05:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:05:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:05:05,110 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-21 09:05:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:05,276 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-21 09:05:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:05:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-11-21 09:05:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:05,278 INFO L225 Difference]: With dead ends: 45 [2022-11-21 09:05:05,278 INFO L226 Difference]: Without dead ends: 45 [2022-11-21 09:05:05,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:05:05,279 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:05,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-21 09:05:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-11-21 09:05:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 34 states have internal predecessors, (43), 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) [2022-11-21 09:05:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-11-21 09:05:05,293 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2022-11-21 09:05:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:05,294 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-11-21 09:05:05,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-21 09:05:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-11-21 09:05:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:05:05,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:05,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:05,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:05:05,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1358038030, now seen corresponding path program 1 times [2022-11-21 09:05:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931494812] [2022-11-21 09:05:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931494812] [2022-11-21 09:05:05,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931494812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:05,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:05,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:05:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563855231] [2022-11-21 09:05:05,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:05,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:05:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:05:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:05:05,481 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:05,537 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-11-21 09:05:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:05:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 09:05:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:05,538 INFO L225 Difference]: With dead ends: 34 [2022-11-21 09:05:05,538 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 09:05:05,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:05:05,539 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:05,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:05:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 09:05:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-21 09:05:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 30 states have internal predecessors, (37), 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) [2022-11-21 09:05:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-21 09:05:05,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 12 [2022-11-21 09:05:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:05,543 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-21 09:05:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-21 09:05:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:05:05,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:05,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:05:05,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1357243700, now seen corresponding path program 1 times [2022-11-21 09:05:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:05,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068797592] [2022-11-21 09:05:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:05,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:05,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068797592] [2022-11-21 09:05:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068797592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:05,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:05,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:05:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463215091] [2022-11-21 09:05:05,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:05,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:05,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:05,626 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:05,664 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-21 09:05:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 09:05:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:05,666 INFO L225 Difference]: With dead ends: 30 [2022-11-21 09:05:05,666 INFO L226 Difference]: Without dead ends: 30 [2022-11-21 09:05:05,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:05,667 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:05,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 39 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-21 09:05:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-21 09:05:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 29 states have internal predecessors, (36), 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) [2022-11-21 09:05:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-21 09:05:05,670 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 12 [2022-11-21 09:05:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:05,671 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-21 09:05:05,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-21 09:05:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:05:05,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:05,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:05,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:05:05,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1357243701, now seen corresponding path program 1 times [2022-11-21 09:05:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827937382] [2022-11-21 09:05:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827937382] [2022-11-21 09:05:05,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827937382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:05,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:05,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:05,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984990231] [2022-11-21 09:05:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:05:05,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:05:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:05,863 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:05,947 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-21 09:05:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:05:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 09:05:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:05,948 INFO L225 Difference]: With dead ends: 33 [2022-11-21 09:05:05,948 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 09:05:05,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:05,950 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:05,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 09:05:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-21 09:05:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 31 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) [2022-11-21 09:05:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-21 09:05:05,953 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 12 [2022-11-21 09:05:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:05,953 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-21 09:05:05,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-21 09:05:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:05:05,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:05,954 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:05:05,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 824988573, now seen corresponding path program 1 times [2022-11-21 09:05:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:05,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725191840] [2022-11-21 09:05:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:05,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 09:05:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:06,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725191840] [2022-11-21 09:05:06,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725191840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:06,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:06,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459884046] [2022-11-21 09:05:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:06,097 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-21 09:05:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:06,159 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2022-11-21 09:05:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:05:06,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-21 09:05:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:06,161 INFO L225 Difference]: With dead ends: 54 [2022-11-21 09:05:06,161 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 09:05:06,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:06,162 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 75 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 09:05:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2022-11-21 09:05:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 34 states have internal predecessors, (41), 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) [2022-11-21 09:05:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-21 09:05:06,170 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2022-11-21 09:05:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:06,172 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-21 09:05:06,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-21 09:05:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-21 09:05:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:05:06,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:06,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:05:06,175 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1813342470, now seen corresponding path program 1 times [2022-11-21 09:05:06,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:06,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648478804] [2022-11-21 09:05:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:06,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:06,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648478804] [2022-11-21 09:05:06,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648478804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:06,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:06,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336527966] [2022-11-21 09:05:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:06,326 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:06,347 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-21 09:05:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 09:05:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:06,348 INFO L225 Difference]: With dead ends: 38 [2022-11-21 09:05:06,349 INFO L226 Difference]: Without dead ends: 37 [2022-11-21 09:05:06,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:06,350 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:06,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-21 09:05:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-11-21 09:05:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.3125) internal successors, (42), 35 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) [2022-11-21 09:05:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-21 09:05:06,353 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 15 [2022-11-21 09:05:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:06,354 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-21 09:05:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-21 09:05:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:05:06,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:06,355 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 09:05:06,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1505046943, now seen corresponding path program 1 times [2022-11-21 09:05:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87623842] [2022-11-21 09:05:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 09:05:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87623842] [2022-11-21 09:05:06,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87623842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:06,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:06,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:05:06,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269638646] [2022-11-21 09:05:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:06,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:05:06,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:05:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:05:06,480 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-21 09:05:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:06,507 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-21 09:05:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:05:06,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-21 09:05:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:06,509 INFO L225 Difference]: With dead ends: 33 [2022-11-21 09:05:06,509 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 09:05:06,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:05:06,510 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:06,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:05:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 09:05:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-21 09:05:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 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) [2022-11-21 09:05:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-21 09:05:06,523 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 15 [2022-11-21 09:05:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:06,523 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-21 09:05:06,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-21 09:05:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-21 09:05:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 09:05:06,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:06,526 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:05:06,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-21 09:05:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash -596495872, now seen corresponding path program 1 times [2022-11-21 09:05:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:06,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885085549] [2022-11-21 09:05:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:06,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:06,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:05:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:06,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:05:06,609 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:05:06,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-21 09:05:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-21 09:05:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-21 09:05:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-21 09:05:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-21 09:05:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-21 09:05:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-11-21 09:05:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2022-11-21 09:05:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2022-11-21 09:05:06,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2022-11-21 09:05:06,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2022-11-21 09:05:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 09:05:06,619 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:06,624 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:05:06,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:05:06 BoogieIcfgContainer [2022-11-21 09:05:06,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:05:06,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:05:06,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:05:06,665 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:05:06,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:01" (3/4) ... [2022-11-21 09:05:06,668 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 09:05:06,754 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:05:06,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:05:06,755 INFO L158 Benchmark]: Toolchain (without parser) took 6504.46ms. Allocated memory was 172.0MB in the beginning and 222.3MB in the end (delta: 50.3MB). Free memory was 137.1MB in the beginning and 183.5MB in the end (delta: -46.4MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,756 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 172.0MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:05:06,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.86ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 121.0MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.18ms. Allocated memory is still 172.0MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,757 INFO L158 Benchmark]: Boogie Preprocessor took 35.11ms. Allocated memory is still 172.0MB. Free memory was 118.9MB in the beginning and 117.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,759 INFO L158 Benchmark]: RCFGBuilder took 521.72ms. Allocated memory is still 172.0MB. Free memory was 117.2MB in the beginning and 103.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,759 INFO L158 Benchmark]: TraceAbstraction took 5144.94ms. Allocated memory was 172.0MB in the beginning and 222.3MB in the end (delta: 50.3MB). Free memory was 103.2MB in the beginning and 186.6MB in the end (delta: -83.4MB). Peak memory consumption was 94.8MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,760 INFO L158 Benchmark]: Witness Printer took 89.67ms. Allocated memory is still 222.3MB. Free memory was 185.6MB in the beginning and 183.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:06,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 172.0MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.86ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 121.0MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.18ms. Allocated memory is still 172.0MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.11ms. Allocated memory is still 172.0MB. Free memory was 118.9MB in the beginning and 117.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.72ms. Allocated memory is still 172.0MB. Free memory was 117.2MB in the beginning and 103.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5144.94ms. Allocated memory was 172.0MB in the beginning and 222.3MB in the end (delta: 50.3MB). Free memory was 103.2MB in the beginning and 186.6MB in the end (delta: -83.4MB). Peak memory consumption was 94.8MB. Max. memory is 16.1GB. * Witness Printer took 89.67ms. Allocated memory is still 222.3MB. Free memory was 185.6MB in the beginning and 183.5MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L529] int in_len = __VERIFIER_nondet_int(); [L530] COND FALSE !(in_len < 1) [L531] char* in = __builtin_alloca (in_len); VAL [__builtin_alloca (in_len)={4:0}, in={4:0}, in_len=6] [L532] in[in_len-1]=0 VAL [__builtin_alloca (in_len)={4:0}, in={4:0}, in_len=6] [L533] int out_len = __VERIFIER_nondet_int(); [L534] COND FALSE !(out_len < 1) [L535] char* out = __builtin_alloca (out_len); [L536] CALL strlcpy(in, out, out_len) [L511] register char *d = dst; [L512] register const char *s = src; [L513] register size_t n = siz; [L514] n != 0 && --n != 0 [L514] EXPR --n [L514] n != 0 && --n != 0 VAL [--n=0, \old(siz)=1, d={4:0}, dst={4:0}, dst={4:0}, n=0, n != 0 && --n != 0=0, s={3:0}, siz=1, src={3:0}, src={3:0}] [L514] COND FALSE !(n != 0 && --n != 0) [L520] COND TRUE n == 0 VAL [\old(siz)=1, d={4:0}, dst={4:0}, dst={4:0}, n=0, s={3:0}, siz=1, src={3:0}, src={3:0}] [L521] COND TRUE siz != 0 VAL [\old(siz)=1, d={4:0}, dst={4:0}, dst={4:0}, n=0, s={3:0}, siz=1, src={3:0}, src={3:0}] [L522] *d = '\0' VAL [\old(siz)=1, d={4:0}, dst={4:0}, dst={4:0}, n=0, s={3:0}, siz=1, src={3:0}, src={3:0}] [L523] EXPR s++ VAL [\old(siz)=1, d={4:0}, dst={4:0}, dst={4:0}, n=0, s={3:1}, s++={3:0}, s++=7, siz=1, src={3:0}, src={3:0}] [L523] COND TRUE *s++ - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 528]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 633 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 633 mSDsluCounter, 895 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 448 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 57 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-21 09:05:06,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0c5dc05-b0ce-44d6-bde2-087487bdadc7/bin/uautomizer-vX5HgA9Q3a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)