./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcat_short.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcat_short.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 158b8eceb7a2c63c12c3387b55d354bdd17828549d94e13b163dfb4b9ee8e19c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:47:36,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:47:36,785 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 03:47:36,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:47:36,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:47:36,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:47:36,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:47:36,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:47:36,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:47:36,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:47:36,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:47:36,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:47:36,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:47:36,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:47:36,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:47:36,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:47:36,849 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:36,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:47:36,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:36,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:47:36,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:47:36,852 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 158b8eceb7a2c63c12c3387b55d354bdd17828549d94e13b163dfb4b9ee8e19c [2024-11-28 03:47:37,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:47:37,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:47:37,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:47:37,230 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:47:37,231 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:47:37,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-dietlibc/strcat_short.i [2024-11-28 03:47:40,563 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/data/7a27ee5b5/d0fc55650dee48c6b79aab6039c28b1f/FLAG7c418ed5e [2024-11-28 03:47:40,830 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:47:40,830 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/sv-benchmarks/c/termination-dietlibc/strcat_short.i [2024-11-28 03:47:40,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/data/7a27ee5b5/d0fc55650dee48c6b79aab6039c28b1f/FLAG7c418ed5e [2024-11-28 03:47:40,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/data/7a27ee5b5/d0fc55650dee48c6b79aab6039c28b1f [2024-11-28 03:47:40,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:47:40,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:47:40,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:47:40,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:47:40,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:47:40,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:47:40" (1/1) ... [2024-11-28 03:47:40,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69daa597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:40, skipping insertion in model container [2024-11-28 03:47:40,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:47:40" (1/1) ... [2024-11-28 03:47:40,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:47:41,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:47:41,268 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:47:41,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:47:41,364 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:47:41,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41 WrapperNode [2024-11-28 03:47:41,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:47:41,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:47:41,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:47:41,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:47:41,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,417 INFO L138 Inliner]: procedures = 114, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-11-28 03:47:41,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:47:41,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:47:41,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:47:41,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:47:41,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,444 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [3, 2]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 3 writes are split as follows [2, 1]. [2024-11-28 03:47:41,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,450 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:47:41,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:47:41,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:47:41,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:47:41,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (1/1) ... [2024-11-28 03:47:41,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:41,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:41,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:47:41,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:47:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:47:41,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:47:41,645 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:47:41,647 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:47:41,985 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-28 03:47:41,985 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:47:42,003 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:47:42,003 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:47:42,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:42 BoogieIcfgContainer [2024-11-28 03:47:42,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:47:42,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:47:42,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:47:42,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:47:42,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:47:40" (1/3) ... [2024-11-28 03:47:42,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a163dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:47:42, skipping insertion in model container [2024-11-28 03:47:42,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:41" (2/3) ... [2024-11-28 03:47:42,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a163dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:47:42, skipping insertion in model container [2024-11-28 03:47:42,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:42" (3/3) ... [2024-11-28 03:47:42,018 INFO L128 eAbstractionObserver]: Analyzing ICFG strcat_short.i [2024-11-28 03:47:42,036 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:47:42,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG strcat_short.i that has 1 procedures, 34 locations, 1 initial locations, 2 loop locations, and 11 error locations. [2024-11-28 03:47:42,088 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:47:42,110 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@42d1aeb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:47:42,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 03:47:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.8636363636363635) 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) [2024-11-28 03:47:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 03:47:42,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:42,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 03:47:42,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:42,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-28 03:47:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:42,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289473537] [2024-11-28 03:47:42,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289473537] [2024-11-28 03:47:42,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289473537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:42,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:42,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:47:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461400727] [2024-11-28 03:47:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:42,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:47:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:42,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:47:42,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:47:42,372 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.8636363636363635) 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) 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) [2024-11-28 03:47:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:42,460 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-28 03:47:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:47:42,462 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 [2024-11-28 03:47:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:42,469 INFO L225 Difference]: With dead ends: 35 [2024-11-28 03:47:42,469 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:47:42,471 INFO L434 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 [2024-11-28 03:47:42,474 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:42,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:47:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:47:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 03:47:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 31 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) [2024-11-28 03:47:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 03:47:42,516 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 4 [2024-11-28 03:47:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:42,519 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 03:47:42,519 INFO L472 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) [2024-11-28 03:47:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-28 03:47:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 03:47:42,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:42,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 03:47:42,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:47:42,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:42,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-28 03:47:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:42,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44358864] [2024-11-28 03:47:42,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:42,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44358864] [2024-11-28 03:47:42,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44358864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:42,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:42,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:47:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136110924] [2024-11-28 03:47:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:42,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:47:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:42,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:47:42,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:47:42,668 INFO L87 Difference]: Start difference. First operand 32 states and 36 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) [2024-11-28 03:47:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:42,731 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-28 03:47:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:47:42,732 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 [2024-11-28 03:47:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:42,732 INFO L225 Difference]: With dead ends: 31 [2024-11-28 03:47:42,733 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 03:47:42,733 INFO L434 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 [2024-11-28 03:47:42,734 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:42,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:47:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 03:47:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-28 03:47:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-28 03:47:42,740 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 4 [2024-11-28 03:47:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:42,740 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-28 03:47:42,740 INFO L472 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) [2024-11-28 03:47:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-28 03:47:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 03:47:42,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:42,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 03:47:42,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:47:42,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:42,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-11-28 03:47:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703531404] [2024-11-28 03:47:42,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703531404] [2024-11-28 03:47:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703531404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:43,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:47:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128152834] [2024-11-28 03:47:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:43,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:47:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:43,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:47:43,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:47:43,074 INFO L87 Difference]: Start difference. First operand 31 states and 35 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) [2024-11-28 03:47:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:43,148 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-28 03:47:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:47:43,149 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 [2024-11-28 03:47:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:43,150 INFO L225 Difference]: With dead ends: 32 [2024-11-28 03:47:43,150 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:47:43,150 INFO L434 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 [2024-11-28 03:47:43,151 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:43,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:47:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:47:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-28 03:47:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-28 03:47:43,156 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 4 [2024-11-28 03:47:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:43,157 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-28 03:47:43,157 INFO L472 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) [2024-11-28 03:47:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-28 03:47:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:47:43,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:43,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:43,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:47:43,158 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:43,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782688, now seen corresponding path program 1 times [2024-11-28 03:47:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571147392] [2024-11-28 03:47:43,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:43,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571147392] [2024-11-28 03:47:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571147392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:47:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338986806] [2024-11-28 03:47:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:43,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:47:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:43,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:47:43,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:47:43,338 INFO L87 Difference]: Start difference. First operand 30 states and 34 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) [2024-11-28 03:47:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:43,411 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-28 03:47:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:47:43,412 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 [2024-11-28 03:47:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:43,412 INFO L225 Difference]: With dead ends: 31 [2024-11-28 03:47:43,412 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 03:47:43,413 INFO L434 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 [2024-11-28 03:47:43,414 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 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 [2024-11-28 03:47:43,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:47:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 03:47:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 03:47:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 29 states have internal predecessors, (32), 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) [2024-11-28 03:47:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-28 03:47:43,421 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 7 [2024-11-28 03:47:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:43,422 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-28 03:47:43,422 INFO L472 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) [2024-11-28 03:47:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-28 03:47:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:47:43,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:43,424 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:43,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:47:43,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:43,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 175688875, now seen corresponding path program 1 times [2024-11-28 03:47:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112936406] [2024-11-28 03:47:43,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112936406] [2024-11-28 03:47:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112936406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:47:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673878851] [2024-11-28 03:47:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:43,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:47:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:43,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:47:43,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:47:43,529 INFO L87 Difference]: Start difference. First operand 30 states and 32 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) [2024-11-28 03:47:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:43,577 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-28 03:47:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:47:43,578 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 [2024-11-28 03:47:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:43,578 INFO L225 Difference]: With dead ends: 29 [2024-11-28 03:47:43,578 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 03:47:43,578 INFO L434 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 [2024-11-28 03:47:43,579 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:43,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:47:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 03:47:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-28 03:47:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-28 03:47:43,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2024-11-28 03:47:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:43,587 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-28 03:47:43,587 INFO L472 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) [2024-11-28 03:47:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-28 03:47:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:47:43,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:43,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:43,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:47:43,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:47:43,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 175688876, now seen corresponding path program 1 times [2024-11-28 03:47:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660070670] [2024-11-28 03:47:43,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:47:43,632 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:47:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:47:43,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:47:43,679 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:47:43,680 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2024-11-28 03:47:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2024-11-28 03:47:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-28 03:47:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2024-11-28 03:47:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2024-11-28 03:47:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-28 03:47:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-28 03:47:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2024-11-28 03:47:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-28 03:47:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-28 03:47:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-28 03:47:43,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:47:43,692 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-28 03:47:43,712 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:47:43,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:47:43 BoogieIcfgContainer [2024-11-28 03:47:43,715 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:47:43,716 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:47:43,716 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:47:43,716 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:47:43,717 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:42" (3/4) ... [2024-11-28 03:47:43,722 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:47:43,759 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-11-28 03:47:43,808 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:47:43,808 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:47:43,808 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:47:43,809 INFO L158 Benchmark]: Toolchain (without parser) took 2950.99ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 45.9MB in the end (delta: 45.7MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2024-11-28 03:47:43,809 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:47:43,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.35ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:47:43,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.29ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 73.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:47:43,810 INFO L158 Benchmark]: Boogie Preprocessor took 44.61ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:47:43,810 INFO L158 Benchmark]: RCFGBuilder took 538.08ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 56.8MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:43,810 INFO L158 Benchmark]: TraceAbstraction took 1708.74ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 50.6MB in the end (delta: 5.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:43,810 INFO L158 Benchmark]: Witness Printer took 91.81ms. Allocated memory is still 117.4MB. Free memory was 50.0MB in the beginning and 45.9MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:43,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.35ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.29ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 73.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.61ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 538.08ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 56.8MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1708.74ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 50.6MB in the end (delta: 5.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 91.81ms. Allocated memory is still 117.4MB. Free memory was 50.0MB in the beginning and 45.9MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. 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: [L522] int in_len = __VERIFIER_nondet_int(); [L523] COND FALSE !(in_len < 1) [L524] char* in = __builtin_alloca (in_len); VAL [in={4:0}, in_len=7] [L525] in[in_len-1]=0 [L526] int out_len = __VERIFIER_nondet_int(); [L527] COND FALSE !(out_len < 1) [L528] int out_end = __VERIFIER_nondet_int(); [L529] COND FALSE !(out_len < out_end+in_len) [L530] char* out = __builtin_alloca (out_len); VAL [in={4:0}, out={3:0}, out_end=-2] [L531] 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: 521]: 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, 34 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 273 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 151 mSDtfsCounter, 111 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:47:43,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcb9f0e-d031-4a18-aeed-d1ce9e9dc8bd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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)