./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcat.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcat.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN --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 02cb0b7d003c65b862775c945403a999f88317049d254b45ea895999d5c859dc --- 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-6b4ec56 [2022-11-20 11:31:31,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:31:31,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:31:31,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:31:31,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:31:31,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:31:31,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:31:31,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:31:31,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:31:31,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:31:31,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:31:31,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:31:31,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:31:31,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:31:31,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:31:31,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:31:31,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:31:31,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:31:31,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:31:31,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:31:31,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:31:31,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:31:31,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:31:31,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:31:31,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:31:31,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:31:31,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:31:31,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:31:31,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:31:31,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:31:31,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:31:31,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:31:31,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:31:31,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:31:31,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:31:31,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:31:31,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:31:31,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:31:31,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:31:31,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:31:31,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:31:31,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-20 11:31:31,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:31:31,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:31:31,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:31:31,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:31:31,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:31:31,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:31:31,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:31:31,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:31:31,559 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:31:31,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:31:31,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:31:31,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:31:31,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:31:31,562 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:31:31,562 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:31:31,562 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:31:31,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:31:31,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:31:31,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:31:31,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:31:31,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:31:31,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:31:31,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:31:31,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:31:31,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:31:31,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:31:31,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:31:31,565 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_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02cb0b7d003c65b862775c945403a999f88317049d254b45ea895999d5c859dc [2022-11-20 11:31:31,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:31:31,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:31:31,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:31:31,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:31:31,948 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:31:31,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-dietlibc/strcat.i [2022-11-20 11:31:35,049 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:31:35,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:31:35,272 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/sv-benchmarks/c/termination-dietlibc/strcat.i [2022-11-20 11:31:35,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/data/5877095c9/51db117204ae4c54b4f574d883788f80/FLAG956140731 [2022-11-20 11:31:35,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/data/5877095c9/51db117204ae4c54b4f574d883788f80 [2022-11-20 11:31:35,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:31:35,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:31:35,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:31:35,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:31:35,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:31:35,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183596b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35, skipping insertion in model container [2022-11-20 11:31:35,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:31:35,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:31:35,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:31:35,687 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:31:35,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:31:35,790 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:31:35,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35 WrapperNode [2022-11-20 11:31:35,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:31:35,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:31:35,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:31:35,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:31:35,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,871 INFO L138 Inliner]: procedures = 114, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2022-11-20 11:31:35,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:31:35,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:31:35,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:31:35,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:31:35,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:31:35,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:31:35,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:31:35,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:31:35,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (1/1) ... [2022-11-20 11:31:35,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:31:35,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:35,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:31:35,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:31:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:31:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:31:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:31:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:31:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:31:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:31:36,110 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:31:36,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:31:36,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:31:36,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:31:36,559 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:31:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:36 BoogieIcfgContainer [2022-11-20 11:31:36,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:31:36,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:31:36,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:31:36,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:31:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:31:35" (1/3) ... [2022-11-20 11:31:36,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b82359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:31:36, skipping insertion in model container [2022-11-20 11:31:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:35" (2/3) ... [2022-11-20 11:31:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b82359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:31:36, skipping insertion in model container [2022-11-20 11:31:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:36" (3/3) ... [2022-11-20 11:31:36,576 INFO L112 eAbstractionObserver]: Analyzing ICFG strcat.i [2022-11-20 11:31:36,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:31:36,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-11-20 11:31:36,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:31:36,647 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;@5d87f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:31:36,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:31:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 32 states have (on average 2.09375) internal successors, (67), 55 states have internal predecessors, (67), 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) [2022-11-20 11:31:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:31:36,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:36,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:31:36,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 925708, now seen corresponding path program 1 times [2022-11-20 11:31:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:36,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028390830] [2022-11-20 11:31:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:36,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:36,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028390830] [2022-11-20 11:31:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028390830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:36,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:36,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:31:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561088032] [2022-11-20 11:31:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:36,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:31:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:31:36,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:31:36,893 INFO L87 Difference]: Start difference. First operand has 56 states, 32 states have (on average 2.09375) internal successors, (67), 55 states have internal predecessors, (67), 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) [2022-11-20 11:31:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:37,006 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-11-20 11:31:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:31:37,009 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 [2022-11-20 11:31:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:37,031 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:31:37,031 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:31:37,033 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 [2022-11-20 11:31:37,036 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:37,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:31:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:31:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-20 11:31:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.967741935483871) internal successors, (61), 53 states have internal predecessors, (61), 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) [2022-11-20 11:31:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2022-11-20 11:31:37,083 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 4 [2022-11-20 11:31:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:37,084 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2022-11-20 11:31:37,084 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) [2022-11-20 11:31:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2022-11-20 11:31:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:31:37,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:37,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:31:37,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:31:37,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-11-20 11:31:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336555310] [2022-11-20 11:31:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:37,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336555310] [2022-11-20 11:31:37,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336555310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:37,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:37,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:31:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828219101] [2022-11-20 11:31:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:31:37,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:31:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:31:37,276 INFO L87 Difference]: Start difference. First operand 54 states and 61 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) [2022-11-20 11:31:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:37,365 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-11-20 11:31:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:31:37,366 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 [2022-11-20 11:31:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:37,367 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:31:37,367 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 11:31:37,372 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 [2022-11-20 11:31:37,374 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:37,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:31:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 11:31:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-20 11:31:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.935483870967742) internal successors, (60), 52 states have internal predecessors, (60), 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) [2022-11-20 11:31:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-11-20 11:31:37,392 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 4 [2022-11-20 11:31:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:37,393 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-11-20 11:31:37,393 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) [2022-11-20 11:31:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-11-20 11:31:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:31:37,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:37,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:31:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:31:37,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-11-20 11:31:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:37,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335649143] [2022-11-20 11:31:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:37,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335649143] [2022-11-20 11:31:37,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335649143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:31:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979892205] [2022-11-20 11:31:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:31:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:31:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:31:37,603 INFO L87 Difference]: Start difference. First operand 53 states and 60 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) [2022-11-20 11:31:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:37,671 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-11-20 11:31:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:31:37,671 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 [2022-11-20 11:31:37,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:37,672 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:31:37,672 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:31:37,673 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 [2022-11-20 11:31:37,674 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 64 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:37,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 85 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:31:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:31:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-20 11:31:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.903225806451613) internal successors, (59), 51 states have internal predecessors, (59), 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) [2022-11-20 11:31:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-11-20 11:31:37,680 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 4 [2022-11-20 11:31:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:37,681 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-11-20 11:31:37,681 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) [2022-11-20 11:31:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-11-20 11:31:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:31:37,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:37,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:31:37,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782727, now seen corresponding path program 1 times [2022-11-20 11:31:37,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:37,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289074330] [2022-11-20 11:31:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:37,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289074330] [2022-11-20 11:31:37,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289074330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:37,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:37,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:31:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455306239] [2022-11-20 11:31:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:31:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:31:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:31:37,789 INFO L87 Difference]: Start difference. First operand 52 states and 59 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) [2022-11-20 11:31:37,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:37,855 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-20 11:31:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:31:37,856 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 [2022-11-20 11:31:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:37,856 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:31:37,857 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:31:37,857 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 [2022-11-20 11:31:37,884 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:37,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 112 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:31:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:31:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-20 11:31:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 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) [2022-11-20 11:31:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-11-20 11:31:37,897 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 7 [2022-11-20 11:31:37,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:37,898 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-11-20 11:31:37,898 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) [2022-11-20 11:31:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-11-20 11:31:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:31:37,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:37,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:37,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:31:37,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 175688875, now seen corresponding path program 1 times [2022-11-20 11:31:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:37,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972459796] [2022-11-20 11:31:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:37,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:37,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972459796] [2022-11-20 11:31:37,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972459796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:37,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:37,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:31:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416714524] [2022-11-20 11:31:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:31:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:31:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:31:37,992 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:38,042 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-20 11:31:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:31:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:31:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:38,047 INFO L225 Difference]: With dead ends: 51 [2022-11-20 11:31:38,047 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:31:38,048 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 [2022-11-20 11:31:38,053 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 36 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:31:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:31:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 11:31:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 50 states have internal predecessors, (56), 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) [2022-11-20 11:31:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-11-20 11:31:38,070 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 8 [2022-11-20 11:31:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:38,070 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-11-20 11:31:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-11-20 11:31:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:31:38,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:38,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:31:38,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:31:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 175688876, now seen corresponding path program 1 times [2022-11-20 11:31:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:38,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010768057] [2022-11-20 11:31:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:38,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:31:38,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:31:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:31:38,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:31:38,148 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:31:38,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 23 remaining) [2022-11-20 11:31:38,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-11-20 11:31:38,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-11-20 11:31:38,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-11-20 11:31:38,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-11-20 11:31:38,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-11-20 11:31:38,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-11-20 11:31:38,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-11-20 11:31:38,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-11-20 11:31:38,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2022-11-20 11:31:38,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2022-11-20 11:31:38,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2022-11-20 11:31:38,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-11-20 11:31:38,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-11-20 11:31:38,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2022-11-20 11:31:38,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-11-20 11:31:38,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-11-20 11:31:38,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2022-11-20 11:31:38,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-11-20 11:31:38,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-11-20 11:31:38,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2022-11-20 11:31:38,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-11-20 11:31:38,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2022-11-20 11:31:38,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:31:38,160 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 11:31:38,165 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:31:38,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:31:38 BoogieIcfgContainer [2022-11-20 11:31:38,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:31:38,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:31:38,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:31:38,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:31:38,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:36" (3/4) ... [2022-11-20 11:31:38,192 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:31:38,229 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:31:38,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:31:38,230 INFO L158 Benchmark]: Toolchain (without parser) took 2928.22ms. Allocated memory is still 140.5MB. Free memory was 96.7MB in the beginning and 90.0MB in the end (delta: 6.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,230 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:31:38,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.52ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 80.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.27ms. Allocated memory is still 140.5MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,231 INFO L158 Benchmark]: Boogie Preprocessor took 34.51ms. Allocated memory is still 140.5MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,231 INFO L158 Benchmark]: RCFGBuilder took 658.74ms. Allocated memory is still 140.5MB. Free memory was 76.2MB in the beginning and 109.4MB in the end (delta: -33.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,232 INFO L158 Benchmark]: TraceAbstraction took 1620.01ms. Allocated memory is still 140.5MB. Free memory was 108.7MB in the beginning and 92.1MB in the end (delta: 16.5MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,232 INFO L158 Benchmark]: Witness Printer took 39.76ms. Allocated memory is still 140.5MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:31:38,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.52ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 80.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.27ms. Allocated memory is still 140.5MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.51ms. Allocated memory is still 140.5MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.74ms. Allocated memory is still 140.5MB. Free memory was 76.2MB in the beginning and 109.4MB in the end (delta: -33.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1620.01ms. Allocated memory is still 140.5MB. Free memory was 108.7MB in the beginning and 92.1MB in the end (delta: 16.5MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 39.76ms. Allocated memory is still 140.5MB. Free memory was 92.1MB in the beginning and 90.0MB 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: [L525] int in_len = __VERIFIER_nondet_int(); [L526] COND FALSE !(in_len < 1) [L527] char* in = __builtin_alloca (in_len); VAL [__builtin_alloca (in_len)={3:0}, in={3:0}, in_len=1] [L528] in[in_len-1]=0 VAL [__builtin_alloca (in_len)={3:0}, in={3:0}, in_len=1] [L529] int out_len = __VERIFIER_nondet_int(); [L530] COND FALSE !(out_len < 1) [L531] int out_end = __VERIFIER_nondet_int(); [L532] COND FALSE !(out_len < out_end+in_len) [L533] char* out = __builtin_alloca (out_len); VAL [__builtin_alloca (in_len)={3:0}, __builtin_alloca (out_len)={2:0}, in={3:0}, in_len=1, out={2:0}, out_end=-1, out_len=4] [L534] out[out_end]=0 - 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: -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: -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: 524]: 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, 56 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 359 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 238 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 11:31:38,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6dfe55c-ae4f-42bc-ad9b-31d98ef53414/bin/uautomizer-ug76WZFUDN/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)