./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b --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 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 22:27:31,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 22:27:31,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 22:27:31,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 22:27:31,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 22:27:31,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 22:27:31,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 22:27:31,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 22:27:31,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 22:27:31,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 22:27:31,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 22:27:31,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 22:27:31,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 22:27:31,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 22:27:31,487 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 22:27:31,487 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 22:27:31,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:27:31,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 22:27:31,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b 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 -> 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 [2024-12-05 22:27:31,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 22:27:31,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 22:27:31,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 22:27:31,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 22:27:31,728 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 22:27:31,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/forester-heap/dll-token-2.i [2024-12-05 22:27:34,448 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/data/a6cbbba13/83791e3770044db79c1080b8668c5745/FLAGfe1639fa6 [2024-12-05 22:27:34,674 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 22:27:34,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i [2024-12-05 22:27:34,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/data/a6cbbba13/83791e3770044db79c1080b8668c5745/FLAGfe1639fa6 [2024-12-05 22:27:34,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/data/a6cbbba13/83791e3770044db79c1080b8668c5745 [2024-12-05 22:27:35,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 22:27:35,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 22:27:35,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 22:27:35,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 22:27:35,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 22:27:35,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49835da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35, skipping insertion in model container [2024-12-05 22:27:35,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 22:27:35,257 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2024-12-05 22:27:35,263 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2024-12-05 22:27:35,264 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2024-12-05 22:27:35,265 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2024-12-05 22:27:35,266 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2024-12-05 22:27:35,268 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2024-12-05 22:27:35,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:27:35,280 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 22:27:35,312 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2024-12-05 22:27:35,314 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2024-12-05 22:27:35,315 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2024-12-05 22:27:35,316 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2024-12-05 22:27:35,317 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2024-12-05 22:27:35,318 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_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2024-12-05 22:27:35,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:27:35,343 INFO L204 MainTranslator]: Completed translation [2024-12-05 22:27:35,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35 WrapperNode [2024-12-05 22:27:35,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 22:27:35,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 22:27:35,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 22:27:35,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 22:27:35,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,377 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2024-12-05 22:27:35,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 22:27:35,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 22:27:35,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 22:27:35,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 22:27:35,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,394 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 22:27:35,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 22:27:35,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 22:27:35,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 22:27:35,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:27:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 22:27:35,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 22:27:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 22:27:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 22:27:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 22:27:35,547 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 22:27:35,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 22:27:35,728 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-12-05 22:27:35,729 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 22:27:35,756 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 22:27:35,757 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-12-05 22:27:35,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:27:35 BoogieIcfgContainer [2024-12-05 22:27:35,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 22:27:35,758 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 22:27:35,758 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 22:27:35,767 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 22:27:35,767 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:27:35" (1/1) ... [2024-12-05 22:27:35,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 22:27:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 41 states and 64 transitions. [2024-12-05 22:27:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 64 transitions. [2024-12-05 22:27:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 22:27:35,825 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 41 states and 59 transitions. [2024-12-05 22:27:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2024-12-05 22:27:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 22:27:36,004 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:36,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 41 states and 59 transitions. [2024-12-05 22:27:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2024-12-05 22:27:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 22:27:36,358 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 45 states and 66 transitions. [2024-12-05 22:27:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-12-05 22:27:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 22:27:36,554 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 45 states and 62 transitions. [2024-12-05 22:27:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2024-12-05 22:27:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 22:27:36,612 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 22:27:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 39 states and 53 transitions. [2024-12-05 22:27:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-12-05 22:27:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 22:27:36,831 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2024-12-05 22:27:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-12-05 22:27:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 22:27:37,039 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:27:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:27:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:27:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 44 states and 58 transitions. [2024-12-05 22:27:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-12-05 22:27:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-05 22:27:37,871 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:27:37,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:27:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 22:27:37,905 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 22:27:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 22:27:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 22:27:38,025 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 22:27:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 22:27:38,072 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2024-12-05 22:27:38,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 10:27:38 ImpRootNode [2024-12-05 22:27:38,097 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 22:27:38,097 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 22:27:38,097 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 22:27:38,097 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 22:27:38,098 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:27:35" (3/4) ... [2024-12-05 22:27:38,099 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 22:27:38,127 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 8. [2024-12-05 22:27:38,162 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 22:27:38,162 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 22:27:38,162 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 22:27:38,163 INFO L158 Benchmark]: Toolchain (without parser) took 3160.94ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 91.4MB in the beginning and 138.8MB in the end (delta: -47.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-12-05 22:27:38,163 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:27:38,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.42ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 73.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 22:27:38,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.74ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 72.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:27:38,164 INFO L158 Benchmark]: Boogie Preprocessor took 25.60ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 22:27:38,165 INFO L158 Benchmark]: RCFGBuilder took 352.83ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 53.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 22:27:38,165 INFO L158 Benchmark]: CodeCheck took 2339.04ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 53.9MB in the beginning and 144.3MB in the end (delta: -90.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:27:38,165 INFO L158 Benchmark]: Witness Printer took 65.09ms. Allocated memory is still 192.9MB. Free memory was 144.3MB in the beginning and 138.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 22:27:38,167 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: 2.3s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 127 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 445 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head VAL [head={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1028] COND FALSE !(0) VAL [head={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, x={-1:0}] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={-1:0}, x={-1:0}] [L1035] COND FALSE !(!(1 == x->data)) [L1035] COND FALSE !(0) VAL [head={-1:0}, x={-1:0}] [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data VAL [head={-1:0}, x={-2:0}] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={-1:0}, x={-2:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.42ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 73.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.74ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 72.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.60ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 352.83ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 53.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2339.04ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 53.9MB in the beginning and 144.3MB in the end (delta: -90.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.09ms. Allocated memory is still 192.9MB. Free memory was 144.3MB in the beginning and 138.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-05 22:27:38,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa7f81-4412-4eb5-91b0-c1ddbc2052cd/bin/ukojak-verify-CZk0znPC7b/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