./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme --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 32bit --witnessprinter.graph.data.programhash ece22aa46ab9b41e175a6e56e33a82bfcb1631b8b1756982ada9cc721520a85e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:19,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:20,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:02:20,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:20,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:20,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:20,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:20,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:20,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:20,157 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:20,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:20,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:20,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:20,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:20,161 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:20,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:20,162 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:20,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:20,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:20,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:20,163 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:02:20,164 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:02:20,164 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:02:20,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:20,165 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:02:20,165 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:20,166 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:20,166 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:20,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:20,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:20,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:20,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:20,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:20,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:20,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:20,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:20,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:20,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:20,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:20,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:20,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:20,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece22aa46ab9b41e175a6e56e33a82bfcb1631b8b1756982ada9cc721520a85e [2023-11-26 12:02:20,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:20,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:20,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:20,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:20,491 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:20,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2023-11-26 12:02:23,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:24,115 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:24,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/sv-benchmarks/c/heap-manipulation/tree-1.i [2023-11-26 12:02:24,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/data/759f70f5e/207d7ec2c6d54cbea69ec3de265ae74a/FLAG1781915d2 [2023-11-26 12:02:24,147 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/data/759f70f5e/207d7ec2c6d54cbea69ec3de265ae74a [2023-11-26 12:02:24,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:24,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:24,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:24,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:24,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:24,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1221b8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24, skipping insertion in model container [2023-11-26 12:02:24,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:24,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:24,617 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:24,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:24,746 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:24,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24 WrapperNode [2023-11-26 12:02:24,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:24,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:24,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:24,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:24,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,816 INFO L138 Inliner]: procedures = 122, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2023-11-26 12:02:24,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:24,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:24,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:24,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:24,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,875 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2023-11-26 12:02:24,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:24,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:24,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:24,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:24,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (1/1) ... [2023-11-26 12:02:24,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:24,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:24,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:02:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:02:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-26 12:02:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:02:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:02:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:02:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:02:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:25,125 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:25,127 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:25,751 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:25,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:25,808 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-26 12:02:25,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:25 BoogieIcfgContainer [2023-11-26 12:02:25,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:25,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:25,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:25,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:25,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:24" (1/3) ... [2023-11-26 12:02:25,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0bbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:25, skipping insertion in model container [2023-11-26 12:02:25,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:24" (2/3) ... [2023-11-26 12:02:25,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0bbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:25, skipping insertion in model container [2023-11-26 12:02:25,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:25" (3/3) ... [2023-11-26 12:02:25,820 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-1.i [2023-11-26 12:02:25,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:25,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2023-11-26 12:02:25,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:25,899 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=PETRI_NET, 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;@25bc7603, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:25,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-26 12:02:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 67 states have (on average 2.4029850746268657) internal successors, (161), 135 states have internal predecessors, (161), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:02:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:02:25,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:25,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:02:25,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:02:25,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 333372, now seen corresponding path program 1 times [2023-11-26 12:02:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037634387] [2023-11-26 12:02:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:26,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037634387] [2023-11-26 12:02:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037634387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:26,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030415349] [2023-11-26 12:02:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:02:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:02:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:02:26,123 INFO L87 Difference]: Start difference. First operand has 137 states, 67 states have (on average 2.4029850746268657) internal successors, (161), 135 states have internal predecessors, (161), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:26,184 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2023-11-26 12:02:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:02:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 12:02:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:26,197 INFO L225 Difference]: With dead ends: 135 [2023-11-26 12:02:26,198 INFO L226 Difference]: Without dead ends: 134 [2023-11-26 12:02:26,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:02:26,204 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:26,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-26 12:02:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-11-26 12:02:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 132 states have internal predecessors, (143), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2023-11-26 12:02:26,250 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 3 [2023-11-26 12:02:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:26,251 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2023-11-26 12:02:26,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2023-11-26 12:02:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 12:02:26,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:26,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 12:02:26,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:02:26,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:02:26,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 10295904, now seen corresponding path program 1 times [2023-11-26 12:02:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701324015] [2023-11-26 12:02:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:02:26,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:02:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:02:26,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:02:26,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:02:26,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 65 remaining) [2023-11-26 12:02:26,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (63 of 65 remaining) [2023-11-26 12:02:26,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2023-11-26 12:02:26,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2023-11-26 12:02:26,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2023-11-26 12:02:26,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2023-11-26 12:02:26,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2023-11-26 12:02:26,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2023-11-26 12:02:26,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2023-11-26 12:02:26,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2023-11-26 12:02:26,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2023-11-26 12:02:26,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2023-11-26 12:02:26,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2023-11-26 12:02:26,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2023-11-26 12:02:26,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2023-11-26 12:02:26,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 65 remaining) [2023-11-26 12:02:26,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2023-11-26 12:02:26,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2023-11-26 12:02:26,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2023-11-26 12:02:26,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2023-11-26 12:02:26,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2023-11-26 12:02:26,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2023-11-26 12:02:26,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2023-11-26 12:02:26,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2023-11-26 12:02:26,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2023-11-26 12:02:26,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2023-11-26 12:02:26,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2023-11-26 12:02:26,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2023-11-26 12:02:26,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 65 remaining) [2023-11-26 12:02:26,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 65 remaining) [2023-11-26 12:02:26,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2023-11-26 12:02:26,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2023-11-26 12:02:26,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2023-11-26 12:02:26,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2023-11-26 12:02:26,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2023-11-26 12:02:26,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2023-11-26 12:02:26,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2023-11-26 12:02:26,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2023-11-26 12:02:26,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2023-11-26 12:02:26,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2023-11-26 12:02:26,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2023-11-26 12:02:26,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2023-11-26 12:02:26,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2023-11-26 12:02:26,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2023-11-26 12:02:26,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2023-11-26 12:02:26,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2023-11-26 12:02:26,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2023-11-26 12:02:26,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2023-11-26 12:02:26,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2023-11-26 12:02:26,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (15 of 65 remaining) [2023-11-26 12:02:26,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (14 of 65 remaining) [2023-11-26 12:02:26,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE (13 of 65 remaining) [2023-11-26 12:02:26,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2023-11-26 12:02:26,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2023-11-26 12:02:26,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 65 remaining) [2023-11-26 12:02:26,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2023-11-26 12:02:26,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (8 of 65 remaining) [2023-11-26 12:02:26,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (7 of 65 remaining) [2023-11-26 12:02:26,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (6 of 65 remaining) [2023-11-26 12:02:26,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2023-11-26 12:02:26,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2023-11-26 12:02:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE (3 of 65 remaining) [2023-11-26 12:02:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE (2 of 65 remaining) [2023-11-26 12:02:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE (1 of 65 remaining) [2023-11-26 12:02:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK (0 of 65 remaining) [2023-11-26 12:02:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:02:26,325 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 12:02:26,331 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:02:26,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:02:26 BoogieIcfgContainer [2023-11-26 12:02:26,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:02:26,349 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:02:26,349 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:02:26,349 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:02:26,350 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:25" (3/4) ... [2023-11-26 12:02:26,351 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 12:02:26,389 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:02:26,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:02:26,393 INFO L158 Benchmark]: Toolchain (without parser) took 2238.27ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 91.5MB in the end (delta: 24.7MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,393 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:02:26,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.11ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 98.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.75ms. Allocated memory is still 163.6MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,395 INFO L158 Benchmark]: Boogie Preprocessor took 96.99ms. Allocated memory is still 163.6MB. Free memory was 96.2MB in the beginning and 92.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,395 INFO L158 Benchmark]: RCFGBuilder took 893.11ms. Allocated memory is still 163.6MB. Free memory was 92.8MB in the beginning and 123.9MB in the end (delta: -31.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,396 INFO L158 Benchmark]: TraceAbstraction took 536.67ms. Allocated memory is still 163.6MB. Free memory was 122.9MB in the beginning and 93.4MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,397 INFO L158 Benchmark]: Witness Printer took 40.27ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:02:26,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 594.11ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 98.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.75ms. Allocated memory is still 163.6MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.99ms. Allocated memory is still 163.6MB. Free memory was 96.2MB in the beginning and 92.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 893.11ms. Allocated memory is still 163.6MB. Free memory was 92.8MB in the beginning and 123.9MB in the end (delta: -31.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 536.67ms. Allocated memory is still 163.6MB. Free memory was 122.9MB in the beginning and 93.4MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 40.27ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). 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: [L633] CALL create_tree() [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); VAL [node={0:0}, nodelast={0:0}] [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] node->parent = ((void *)0) - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: -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: -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: 623]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that free always succeeds Unable to prove that free 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: 625]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 625]: Unable to prove that free always succeeds Unable to prove that free 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: 629]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 629]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 629]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 631]: 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 2 procedures, 137 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 133 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-11-26 12:02:26,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c393fbbf-42ad-4778-87f3-2b4a393776e8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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)