./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi --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 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:10:29,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:10:29,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:10:29,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:10:29,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:10:29,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:10:29,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:10:29,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:10:29,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:10:29,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:10:29,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:10:29,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:10:29,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:10:29,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:10:29,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:10:29,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:10:29,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:10:29,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:10:29,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:10:29,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:10:29,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:10:29,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:10:30,000 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:10:30,001 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:10:30,002 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:10:30,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:10:30,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:10:30,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:10:30,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:10:30,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:10:30,006 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:10:30,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:10:30,007 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:10:30,007 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2023-11-24 23:10:30,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:10:30,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:10:30,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:10:30,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:10:30,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:10:30,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-24 23:10:33,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:10:33,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:10:33,855 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-24 23:10:33,874 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/data/ffed72324/bdd5ecc7f5c946398597158e9a4976fd/FLAGe5b450c9e [2023-11-24 23:10:33,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/data/ffed72324/bdd5ecc7f5c946398597158e9a4976fd [2023-11-24 23:10:33,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:10:33,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:10:33,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:33,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:10:33,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:10:33,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:33" (1/1) ... [2023-11-24 23:10:33,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bb9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:33, skipping insertion in model container [2023-11-24 23:10:33,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:33" (1/1) ... [2023-11-24 23:10:33,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:10:34,334 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2023-11-24 23:10:34,344 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2023-11-24 23:10:34,348 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2023-11-24 23:10:34,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:34,373 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:10:34,445 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2023-11-24 23:10:34,449 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2023-11-24 23:10:34,452 WARN L240 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_04b9a8dd-8d91-4096-b448-16bf66b443ce/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2023-11-24 23:10:34,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:34,497 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:10:34,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34 WrapperNode [2023-11-24 23:10:34,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:34,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:34,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:10:34,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:10:34,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,567 INFO L138 Inliner]: procedures = 119, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2023-11-24 23:10:34,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:34,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:10:34,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:10:34,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:10:34,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:10:34,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:10:34,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:10:34,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:10:34,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:34" (1/1) ... [2023-11-24 23:10:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:10:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:10:34,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:10:34,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:10:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:10:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:10:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:10:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:10:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:10:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:10:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:10:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:10:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:10:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:10:34,860 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:10:34,862 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:10:35,094 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:10:35,141 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:10:35,141 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-24 23:10:35,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:35 BoogieIcfgContainer [2023-11-24 23:10:35,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:10:35,144 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:10:35,145 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:10:35,157 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:10:35,158 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:35" (1/1) ... [2023-11-24 23:10:35,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:10:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2023-11-24 23:10:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2023-11-24 23:10:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:10:35,231 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:10:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2023-11-24 23:10:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2023-11-24 23:10:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:10:35,560 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:10:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2023-11-24 23:10:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2023-11-24 23:10:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:10:36,095 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:10:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 37 states and 55 transitions. [2023-11-24 23:10:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-11-24 23:10:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:10:36,651 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:10:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 37 states and 54 transitions. [2023-11-24 23:10:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2023-11-24 23:10:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:10:36,881 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:10:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 41 states and 62 transitions. [2023-11-24 23:10:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 62 transitions. [2023-11-24 23:10:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:10:37,237 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:37,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:37,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:37,421 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2023-11-24 23:10:37,453 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-24 23:10:37,455 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-24 23:10:37,455 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-24 23:10:37,456 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-24 23:10:37,456 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-24 23:10:37,456 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-24 23:10:37,457 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-24 23:10:37,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:10:37 ImpRootNode [2023-11-24 23:10:37,463 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:10:37,464 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:10:37,464 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:10:37,465 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:10:37,465 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:35" (3/4) ... [2023-11-24 23:10:37,466 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:10:37,477 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-24 23:10:37,478 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-24 23:10:37,478 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-24 23:10:37,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-24 23:10:37,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-24 23:10:37,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-24 23:10:37,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-24 23:10:37,528 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:10:37,529 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:10:37,530 INFO L158 Benchmark]: Toolchain (without parser) took 3617.20ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 97.8MB in the beginning and 74.1MB in the end (delta: 23.7MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,530 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:37,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.06ms. Allocated memory is still 144.7MB. Free memory was 97.4MB in the beginning and 79.3MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.30ms. Allocated memory is still 144.7MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,532 INFO L158 Benchmark]: Boogie Preprocessor took 40.15ms. Allocated memory is still 144.7MB. Free memory was 77.2MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:37,533 INFO L158 Benchmark]: RCFGBuilder took 532.12ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 75.6MB in the beginning and 149.3MB in the end (delta: -73.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,533 INFO L158 Benchmark]: CodeCheck took 2318.69ms. Allocated memory is still 188.7MB. Free memory was 149.1MB in the beginning and 77.1MB in the end (delta: 72.0MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,534 INFO L158 Benchmark]: Witness Printer took 64.65ms. Allocated memory is still 188.7MB. Free memory was 77.1MB in the beginning and 74.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:10:37,537 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, 29 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 75 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 1034]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, state=1, x={-1:0}] [L1032] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}] [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] reach_error() VAL [head={-1:0}, state=1, x={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.06ms. Allocated memory is still 144.7MB. Free memory was 97.4MB in the beginning and 79.3MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.30ms. Allocated memory is still 144.7MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.15ms. Allocated memory is still 144.7MB. Free memory was 77.2MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 532.12ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 75.6MB in the beginning and 149.3MB in the end (delta: -73.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * CodeCheck took 2318.69ms. Allocated memory is still 188.7MB. Free memory was 149.1MB in the beginning and 77.1MB in the end (delta: 72.0MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. * Witness Printer took 64.65ms. Allocated memory is still 188.7MB. Free memory was 77.1MB in the beginning and 74.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 23:10:37,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b9a8dd-8d91-4096-b448-16bf66b443ce/bin/ukojak-verify-afCqCEvfdi/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