./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f8c5ed101296da8e76853e36294f37ed1d85898917b59e645db1ac667d60a8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 00:16:12,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 00:16:12,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-09 00:16:12,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 00:16:12,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-09 00:16:12,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 00:16:12,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 00:16:12,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-09 00:16:12,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 00:16:12,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 00:16:12,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 00:16:12,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 00:16:12,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 00:16:12,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 00:16:12,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 00:16:12,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 00:16:12,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 00:16:12,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 00:16:12,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 00:16:12,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 00:16:12,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 00:16:12,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 00:16:12,962 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 00:16:12,962 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-09 00:16:12,962 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-09 00:16:12,963 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-09 00:16:12,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 00:16:12,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:16:12,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 00:16:12,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 00:16:12,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 00:16:12,965 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-09 00:16:12,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 00:16:12,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f8c5ed101296da8e76853e36294f37ed1d85898917b59e645db1ac667d60a8 [2024-11-09 00:16:13,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 00:16:13,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 00:16:13,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 00:16:13,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 00:16:13,434 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 00:16:13,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/forester-heap/sll-token-1.i Unable to find full path for "g++" [2024-11-09 00:16:15,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 00:16:16,083 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 00:16:16,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i [2024-11-09 00:16:16,096 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/data/5da30cf81/9a04f581b34143229e25d34baa32f76b/FLAG05b7cc509 [2024-11-09 00:16:16,118 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/data/5da30cf81/9a04f581b34143229e25d34baa32f76b [2024-11-09 00:16:16,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 00:16:16,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 00:16:16,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 00:16:16,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 00:16:16,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 00:16:16,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f9ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16, skipping insertion in model container [2024-11-09 00:16:16,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 00:16:16,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2024-11-09 00:16:16,707 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2024-11-09 00:16:16,709 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2024-11-09 00:16:16,711 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2024-11-09 00:16:16,713 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2024-11-09 00:16:16,716 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2024-11-09 00:16:16,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:16:16,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 00:16:16,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2024-11-09 00:16:16,806 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2024-11-09 00:16:16,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2024-11-09 00:16:16,811 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2024-11-09 00:16:16,815 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2024-11-09 00:16:16,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2024-11-09 00:16:16,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:16:16,860 INFO L204 MainTranslator]: Completed translation [2024-11-09 00:16:16,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16 WrapperNode [2024-11-09 00:16:16,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 00:16:16,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 00:16:16,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 00:16:16,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 00:16:16,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,916 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 114 [2024-11-09 00:16:16,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 00:16:16,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 00:16:16,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 00:16:16,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 00:16:16,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 00:16:16,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 00:16:16,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 00:16:16,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 00:16:16,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:16" (1/1) ... [2024-11-09 00:16:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:16:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-09 00:16:17,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-09 00:16:17,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-09 00:16:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 00:16:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 00:16:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 00:16:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 00:16:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 00:16:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 00:16:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 00:16:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 00:16:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 00:16:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 00:16:17,179 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 00:16:17,186 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 00:16:17,467 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 00:16:17,468 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 00:16:17,504 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 00:16:17,505 INFO L316 CfgBuilder]: Removed 15 assume(true) statements. [2024-11-09 00:16:17,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:16:17 BoogieIcfgContainer [2024-11-09 00:16:17,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 00:16:17,506 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-09 00:16:17,507 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-09 00:16:17,521 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-09 00:16:17,521 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:16:17" (1/1) ... [2024-11-09 00:16:17,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 00:16:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:16:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 41 states and 64 transitions. [2024-11-09 00:16:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 64 transitions. [2024-11-09 00:16:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 00:16:17,608 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:16:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:16:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:16:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:16:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:16:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 39 states and 58 transitions. [2024-11-09 00:16:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 58 transitions. [2024-11-09 00:16:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 00:16:18,007 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:16:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:16:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:16:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:16:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:16:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2024-11-09 00:16:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2024-11-09 00:16:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:16:18,331 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:16:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:16:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:16:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:16:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:16:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 43 states and 57 transitions. [2024-11-09 00:16:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-11-09 00:16:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:16:18,447 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:16:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:16:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:16:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 00:16:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:16:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 37 states and 49 transitions. [2024-11-09 00:16:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-09 00:16:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 00:16:18,798 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:16:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:16:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:16:18,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:16:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:16:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:16:19,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:16:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:16:19,102 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2024-11-09 00:16:19,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 12:16:19 ImpRootNode [2024-11-09 00:16:19,134 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-09 00:16:19,135 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 00:16:19,135 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 00:16:19,136 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 00:16:19,136 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:16:17" (3/4) ... [2024-11-09 00:16:19,137 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 00:16:19,179 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-09 00:16:19,179 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 00:16:19,180 INFO L158 Benchmark]: Toolchain (without parser) took 3056.71ms. Allocated memory is still 188.7MB. Free memory was 144.5MB in the beginning and 129.1MB in the end (delta: 15.4MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-11-09 00:16:19,180 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 188.7MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:16:19,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.44ms. Allocated memory is still 188.7MB. Free memory was 144.1MB in the beginning and 123.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 00:16:19,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.03ms. Allocated memory is still 188.7MB. Free memory was 123.1MB in the beginning and 121.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:16:19,183 INFO L158 Benchmark]: Boogie Preprocessor took 41.56ms. Allocated memory is still 188.7MB. Free memory was 121.0MB in the beginning and 119.3MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 00:16:19,183 INFO L158 Benchmark]: RCFGBuilder took 545.45ms. Allocated memory is still 188.7MB. Free memory was 119.3MB in the beginning and 102.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 00:16:19,184 INFO L158 Benchmark]: CodeCheck took 1628.11ms. Allocated memory is still 188.7MB. Free memory was 102.6MB in the beginning and 131.2MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:16:19,185 INFO L158 Benchmark]: Witness Printer took 43.91ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:16:19,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 41 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 51 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; VAL [head={-2:0}, x={-2:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head VAL [head={-2:0}, x={-2:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-2:0}, x={-2:0}] [L1026] EXPR x->data VAL [head={-2:0}, x={-2:0}] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-2:0}, x={-2:0}] [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() VAL [head={-2:0}, x={-2:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 188.7MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.44ms. Allocated memory is still 188.7MB. Free memory was 144.1MB in the beginning and 123.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.03ms. Allocated memory is still 188.7MB. Free memory was 123.1MB in the beginning and 121.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.56ms. Allocated memory is still 188.7MB. Free memory was 121.0MB in the beginning and 119.3MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 545.45ms. Allocated memory is still 188.7MB. Free memory was 119.3MB in the beginning and 102.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1628.11ms. Allocated memory is still 188.7MB. Free memory was 102.6MB in the beginning and 131.2MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.91ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-09 00:16:19,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9d1fec-e4ef-4337-beb2-517e59d90598/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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